UGC NET Paper 1: Held on 10th Jan 2025 Shift 1 (Previous Year Paper)

Number of students enrolled in B.Sc. = \(\frac{20}{100}\times800= 160.\)

Number of students enrolled in B.Com = \(\frac{30}{100}\times800= 240.\)

Number of students enrolled in BCA = 800 - 160 - 240 = 400.

Reqd. difference : 400 - 160 = 240.

Number of girls in College B in 2021 : \(\frac{3}{8}\times800=300.\)

Number of boys in College C in 2022 : \(\frac{5}{12}\times1200=500.\)

Reqd. Ratio : 300:500 = 3:5.

Avg. students enrolled in B over 4 years : \(\frac{900+800+1000+700}{4}=850.\)

Total students enrolled in 2020 : 1200 + 900 + 1000 + 700 = 3800.

Total students enrolled in 2023 : 600 + 700 + 800 + 1000 = 3100.

Difference: 3800 - 3100 = 700.

Total students enrolled in A in 2020 and 2021 : 1200+1100 = 2300.

Total students enrolled in C in 2022 and 2023 : 1200 + 800 = 2000.

Reqd. percentage : \(\frac{300}{2000}\times100=15\)%

The correct answer is - A-III, B-IV, C-I, D-II

Key Points

• CPU (Central Processing Unit)
• The CPU is responsible for processing instructions in a computer.
• It performs basic arithmetic, logic, control, and input/output (I/O) operations specified by the instructions in the program.
• Monitor
• The monitor is a display device that shows visual output from the computer.
• It converts the signals from the computer into a format that can be understood by humans.
• RAM (Random Access Memory)
• RAM is used to store data temporarily while a computer is running.
• It is volatile memory, meaning it loses all stored information when the computer is turned off.
• Hard Disk
• The hard disk is a storage device that stores data permanently.
• It retains information even when the computer is powered off, making it non-volatile storage.

Additional Information

• Other Storage Devices
• SSD (Solid State Drive)
• Similar to a hard disk but uses flash memory to store data, providing faster access times.
• USB Flash Drive
• Portable storage device that uses flash memory and connects via USB ports.
• Output Devices
• Printers
• Convert digital documents into physical copies on paper.
• Speakers
• Convert digital audio signals into sound.
• Input Devices
• Keyboard
• Used for typing text and inputting commands into the computer.
• Mouse
• Pointing device used to interact with the graphical user interface (GUI).

The correct answer is - A, C, and E Only

Key Points

• The Phatic Stage
• The Phatic Stage refers to the initial phase of communication where social interaction is initiated through small talk and polite conversation.
• This stage helps in establishing a connection and breaking the ice between the individuals involved.
• The Personal Stage
• The Personal Stage involves sharing personal information and developing a deeper understanding of each other.
• This stage is crucial for building trust and forming a meaningful relationship.
• The Intimate Stage
• The Intimate Stage is characterized by a high level of closeness and sharing of intimate details.
• This stage represents the deepest level of interpersonal communication where individuals feel comfortable expressing their true selves.

Additional Information

• Proxemics
• Proxemics is the study of how physical space affects communication.
• It involves understanding the spatial relationships and physical distance between individuals during interactions.
• Plato Stage
• The Plato Stage is not a recognized stage in interpersonal communication.
• It is important to focus on the established stages: Phatic, Personal, and Intimate.

The correct answer is - A and B Only

Key Points

• Increased productivity
• Video conferencing allows for instant communication and collaboration, reducing the need for travel and enabling quicker decision-making.
• Teams can meet more frequently and without the constraints of physical location, leading to more efficient workflows.
• Going green
• By reducing the need for travel, video conferencing helps lower carbon footprints and supports environmental sustainability.
• Organizations can save on travel expenses and reduce their overall environmental impact.

Additional Information

• Challenges of Video Conferencing
• Lack of personal contact
• While video conferencing is convenient, it may lack the personal touch and non-verbal cues present in face-to-face meetings.
• This can sometimes lead to misunderstandings or a lack of connection among participants.
• Technical issues
• Although video conferencing technology has advanced, issues such as poor internet connectivity, low-quality video, and audio clarity problems can still occur.
• These technical challenges can disrupt meetings and affect communication.
• Best Practices for Effective Video Conferencing
• Ensure a stable internet connection and test equipment prior to meetings.
• Encourage participants to use high-quality microphones and cameras for better clarity.
• Adopt a professional virtual background or ensure a clean, distraction-free environment.
• Set clear agendas and objectives for meetings to enhance productivity.

The correct answer is - E, A, C, B, D

Key Points

• University Education Commission (E)
• Established in 1948 under the chairmanship of Dr. S. Radhakrishnan.
• Focused on the improvement of university education in India.
• Secondary Education Commission (A)
• Established in 1952 under the chairmanship of Dr. A. Lakshmanaswami Mudaliar.
• Aimed to reorganize and improve secondary education in India.
• Establishment of UGC (C)
• The University Grants Commission (UGC) of India was established on December 28, 1953, and later became a statutory body through an Act of Parliament in 1956.
• Responsible for coordinating, determining, and maintaining standards of university education in India.
• Kothari Education Commission (B)
• Established in 1964 and the report was submitted in 1966 under the chairmanship of Dr. D. S. Kothari.
• Focused on the comprehensive education system in India.
• Chattopadhyay Commission (D)
• The Chattopadhyay Commission (1983), also known as the National Commission on Teachers-I, was established in India to address the challenges faced by teachers and to improve teacher education.
• Aimed to recommend reforms to make India a knowledge superpower.

Additional Information

• University Education Commission
• Suggested the establishment of the UGC to oversee university education.
• Recommended a three-year degree course and a two-year pre-university course.
• Secondary Education Commission
• Recommended diversified courses to cater to various interests and aptitudes of students.
• Suggested the introduction of multi-purpose schools.
• Kothari Education Commission
• Recommended a common school system to provide equal opportunities to all children.
• Emphasized the need for a national policy on education.
• Chattopadhyay Commission
• Focused on the use of technology in education and improving the quality of higher education.
• Recommended the establishment of 1500 universities by 2015 to cater to the growing demand for higher education.

The correct answer is - It leads to different opposite conclusions

Key Points

• Savyabhicāra
• The fallacy of Savyabhicāra is concerned with the irregular middle term or hetu.
• In this fallacy, the hetu is not consistently present with the major term, leading to contradictory conclusions.
• This irregularity causes the conclusion to be unreliable, as the hetu can be related to both the presence and absence of the major term.

Additional Information

• Types of Hetu (Middle Term)
• Avinabhāva Hetu
• A hetu that is invariably connected with the major term, leading to a reliable conclusion.
• Vyapti
• Vyapti refers to the invariable concomitance between the hetu and the major term, a key factor in valid inference.
• Fallacies in Hetu
• Other than Savyabhicāra, fallacies include Asiddha (unproven hetu) and Viruddha (contradictory hetu).

The correct answer is - It is a student's general knowledge about the world.

Key Points

• Semantic Memory
• Refers to a portion of long-term memory that processes ideas and concepts that are not drawn from personal experience.
• Includes common knowledge, such as the names of colors, the sounds of letters, the capitals of countries, and other basic facts acquired over a lifetime.
• Enables individuals to understand and use language, recognize objects, and recall general information about the world.
• Is distinct from episodic memory, which involves the recollection of personal experiences and specific events in time.

Additional Information

• Episodic Memory
• Involves the recollection of specific events, situations, and experiences.
• Examples include remembering a birthday party, a vacation, or the details of a specific conversation.
• Is autobiographical and closely tied to the individual's personal experiences.
• Procedural Memory
• Type of long-term memory responsible for knowing how to do things, also known as motor skills.
• Examples include riding a bike, tying shoelaces, and playing a musical instrument.
• Is implicit and does not require conscious thought to perform the learned tasks.
• Working Memory
• Short-term memory system that holds and manipulates information temporarily.
• Is crucial for reasoning and the guidance of decision-making and behavior.
• Examples include solving a math problem in your head, following a conversation, and comprehending what you read.

The correct answer is - Option 1: A, C, and D Only

Key Points

• A. It promotes multiple entry-multiple exit
• The NEP 2020 introduces a flexible curriculum structure with multiple entry and exit points to facilitate ease of learning.
• Students can exit and re-enter the education system at various stages, earning appropriate certifications.
• C. It promotes multi and inter-disciplinarity
• The policy encourages a holistic and multidisciplinary approach to education, integrating arts, sciences, and vocational subjects.
• Students are allowed to choose subjects across different disciplines, promoting a broader spectrum of knowledge.
• D. It promotes privatization-philanthropic participation in Education
• The NEP 2020 emphasizes philanthropic and private sector participation in the education system.
• This approach aims to enhance infrastructure and resource availability in educational institutions.

Additional Information

• NEP 2020 Overview
• The National Education Policy (NEP) 2020 aims to transform the Indian education system by 2040, making it more inclusive, flexible, and aligned with the needs of the 21^st century.
• Language Policy
• The NEP 2020 emphasizes mother tongue/local language as the medium of instruction at least till Grade 5, and preferably till Grade 8 and beyond.
• It does not explicitly promote English education, focusing more on regional languages.
• Higher Education Reforms
• Introduction of a 4-year multidisciplinary bachelor's program with options for entry and exit at various stages.
• Establishment of a single regulator for higher education, excluding legal and medical education.

The correct answer is - A-I, B-IV, C-III, D-II

Key Points

• Milind College
• Founded by B.R. Ambedkar.
• Located in Aurangabad, Maharashtra.
• Established to promote education among the underprivileged sections of society.
• Rajghat Besant School
• Founded by Jiddu Krishnamurti.
• Located in Varanasi, Uttar Pradesh.
• Emphasizes holistic education and the overall development of children.
• Banasthali Vidyapeeth
• Founded by Hiralal Shastri.
• Located in Tonk, Rajasthan.
• Focuses on women's education and empowerment.
• Auroville
• Founded by Sri Aurobindo and The Mother (Mirra Alfassa).
• Located in Viluppuram district, Tamil Nadu.
• A unique experimental township aimed at realizing human unity and sustainable living.

Additional Information

• Educational Contributions
• B.R. Ambedkar
• Major social reformer who played a key role in drafting the Indian Constitution.
• Advocated for the rights and education of the marginalized sections.
• Jiddu Krishnamurti
• Philosopher and spiritual teacher known for his teachings on education and self-awareness.
• Founded several schools aimed at fostering critical thinking and holistic development.
• Hiralal Shastri
• First Chief Minister of Rajasthan and a visionary for women's education.
• Established Banasthali Vidyapeeth to empower women through education.
• Sri Aurobindo
• Indian philosopher, yogi, and nationalist who founded Auroville as a place for spiritual and communal living.
• Auroville continues to be a hub for sustainable and innovative living practices.

The correct answer is - Cloud

Key Points

• Cloud computing
• Email services like Gmail, Outlook, and Yahoo Mail use cloud computing to store and manage users' data on remote servers.
• It allows users to access their emails from any device with an internet connection, providing high availability and scalability.
• Cloud computing ensures data redundancy and backup, offering reliable and secure storage solutions.
• Service providers handle software updates and maintenance, reducing the need for users to manage these tasks.

Additional Information

• Types of Computing
• Distributed Computing
• A system where multiple computers work together to solve complex problems, sharing resources and tasks over a network.
• Examples include scientific simulations, large-scale data processing, and real-time analytics.
• Grid Computing
• A form of distributed computing that involves coordinating and sharing computing power and data storage across multiple locations.
• Often used in research environments for tasks that require significant computational power.
• P2P (Peer-to-Peer) Computing
• A decentralized network architecture where each participant (peer) acts as both a client and a server.
• Commonly used in file-sharing networks and blockchain technologies.
• Advantages of Cloud Computing for Email Services
• Accessibility: Users can access their emails from anywhere, on any device, at any time.
• Scalability: Services can easily scale up or down based on the user's needs.
• Cost-Effectiveness: Reduces the need for physical hardware and maintenance, cutting down on costs.
• Security: Providers offer advanced security measures including encryption and multi-factor authentication.

The correct answer is - A, B, C, D and E

Key Points

• Interactive teaching and learning material
• Genially:
• A tool for creating interactive presentations, infographics, and other engaging visual content.
• Learningapps.org:
• Provides a variety of interactive learning modules and activities that can be customized for different subjects.
• Interacty:
• Offers tools to create interactive content such as quizzes, games, and timelines to engage learners.
• H5P:
• An open-source platform that allows users to create, share, and reuse interactive HTML5 content.
• Educaplay:
• Enables the creation of interactive educational activities like quizzes, crosswords, and interactive maps.

Additional Information

• Benefits of interactive tools
• Enhanced engagement:
• Interactive tools help in keeping learners engaged and motivated by making the content more engaging and participatory.
• Improved retention:
• These tools often lead to better retention of information as they cater to various learning styles and include multiple forms of media.
• Versatile applications:
• Interactive tools can be used across different subjects and educational levels, making them highly versatile.
• Considerations for choosing tools
• User-friendliness:
• It's important to select tools that are easy to use for both educators and learners to ensure smooth implementation and usage.
• Compatibility:
• Ensure that the tools are compatible with the devices and platforms used by the learners.
• Cost:
• Consider the cost of the tools and whether there are free or open-source alternatives available that meet your needs.

The correct answer is - Integrates information from the phonological loop, visuospatial sketchpad and long-term Memory.

Key Points

• Episodic Buffer
• The episodic buffer is a component of the working memory model introduced by Baddeley in 2000.
• It serves as a temporary store that integrates information from various sources.
• Specifically, it combines data from the phonological loop (which handles auditory information), the visuospatial sketchpad (which manages visual and spatial information), and long-term memory.

Additional Information

• Working Memory Model
• The working memory model was developed by Alan Baddeley and Graham Hitch in 1974.
• It consists of four main components:
• Phonological Loop: Processes verbal and auditory information.
• Visuospatial Sketchpad: Handles visual and spatial data.
• Central Executive: Oversees and coordinates the operation of the other components.
• Episodic Buffer: Integrates information across different domains and links with long-term memory.
• Long-term Memory
• Long-term memory is the system responsible for storing information over long periods.
• It interacts with the episodic buffer to provide background knowledge and context for new information being processed.
• There are different types of long-term memory, including:
• Explicit Memory: Knowledge that we can consciously recall, such as facts and events.
• Implicit Memory: Skills and procedures that we perform automatically, without conscious recollection.

The correct answer is - B, A, C, D, E

Key Points

• OSI Layers Sequence
• The OSI model has 7 layers, each with a specific function.
• The correct sequence from the bottom layer to the top layer is:
• Physical Layer (B) - Deals with the physical connection between devices.
• Data Link Layer (A) - Responsible for node-to-node data transfer and error detection.
• Network Layer (C) - Manages data routing and forwarding.
• Presentation Layer (D) - Translates data between the application layer and the network.
• Application Layer (E) - Provides network services directly to applications.

Additional Information

• Detailed Functions of OSI Layers
• Physical Layer
• Handles the transmission of raw data bits over a physical medium.
• Includes hardware components like cables, switches, and network interface cards.
• Data Link Layer
• Ensures reliable data transfer across a physical link.
• Utilizes MAC addresses for hardware addressing.
• Network Layer
• Manages logical addressing and path determination.
• Utilizes IP addresses to route packets to their destination.
• Presentation Layer
• Converts data between the application and network formats.
• Handles encryption, compression, and translation of data formats.
• Application Layer
• Provides network services directly to user applications.
• Includes protocols like HTTP, FTP, and SMTP.

The correct answer is - Thomas Babington Macaulay

Key Points

• Thomas Babington Macaulay
• Known for his Education Reforms in India during the British rule.
• Authored the Minute on Indian Education in 1834.
• Advocated for the promotion of Western education and the English language in Indian schools.
• His reforms aimed at creating a class of anglicized Indians who could assist in administrative roles.

Additional Information

• Charles Wood
• Author of the Wood's Despatch of 1854.
• His despatch outlined a comprehensive plan for education in India, including the establishment of universities in major cities.
• William Bentinck
• Governor-General of India from 1828 to 1835.
• Known for his social reforms, including the abolition of Sati and the suppression of Thuggee.
• Charles Grant
• Played a key role in the establishment of the British East India Company’s policy towards education.
• Advocated for the promotion of Christian missionary activities in India.

The correct answer is - A-II, B-I, C-IV, D-III

Key Points

• George Gerbner
• George Gerbner is known for the Cultivation Theory.
• This theory examines the long-term effects of television on viewers.
• L.A. Festinger
• L.A. Festinger is the proponent of the Cognitive Dissonance Theory.
• This theory explores the psychological discomfort people feel when holding two contradictory beliefs.
• McCombs and Donald L. Shaw
• McCombs and Donald L. Shaw are known for the Agenda Setting Theory.
• This theory suggests that the media has the ability to influence the importance placed on topics of the public agenda.
• Katz and Blumer
• Katz and Blumer are associated with the Uses and Gratification Theory.
• This theory focuses on how people actively seek out specific media to satisfy specific needs.

Additional Information

• Cultivation Theory
• The theory was developed by George Gerbner in the 1960s.
• It posits that long-term exposure to media, particularly television, shapes viewers' perceptions of reality.
• Cognitive Dissonance Theory
• Developed by Leon Festinger in 1957.
• It explains that people experience discomfort (dissonance) when they hold conflicting beliefs, and they are motivated to reduce this discomfort by changing their attitudes, beliefs, or behaviors.
• Agenda Setting Theory
• Proposed by Maxwell McCombs and Donald Shaw in 1972.
• The theory suggests that the media doesn't tell us what to think, but rather what to think about, thus influencing the public agenda.
• Uses and Gratification Theory
• Developed by Elihu Katz and Jay Blumler in the 1970s.
• This theory assumes that individuals actively seek out media that meets their needs for information, personal identity, integration, social interaction, and entertainment.

The correct answer is - Three groups

Key Points

• Placebo-Controlled Design
• In a placebo-controlled design, participants are divided into multiple groups to compare the effect of the treatment.
• Typically, there are three groups:
• Experimental Group: Receives the actual treatment.
• Placebo Group: Receives a placebo or inactive substance.
• Control Group: Receives no treatment or standard treatment for comparison.
• This setup helps to determine if the treatment's effects are due to the treatment itself or other factors.

Additional Information

• Importance of Control Groups
• Control groups are essential for establishing a baseline to compare the effects of the treatment.
• They help in isolating the variable being tested and ensure that the results are due to the treatment and not other extraneous factors.
• Placebo Effect
• The placebo effect occurs when participants experience changes in their condition due to their belief in the treatment, even if they received a placebo.
• This effect underscores the importance of having a placebo group to distinguish the psychological effects from the actual treatment effects.

The correct answer is - Interference

Key Points

• Interference
• Interference occurs when other information in memory competes with or disrupts the memory one is trying to retrieve.
• There are two main types of interference:
• Proactive interference: Older memories interfere with the retrieval of newer memories.
• Retroactive interference: Newer memories interfere with the retrieval of older memories.
• Understanding interference is crucial for effectively managing study habits and improving memory retention.

Additional Information

• Decay
• Memory decay refers to the gradual fading of memory over time due to lack of use or reinforcement.
• Retroactive interference
• This type of interference occurs when new learning disrupts the recall of previously learned information.
• Example: Learning a new phone number can make it difficult to remember an old phone number.
• Proactive interference
• This type of interference happens when older memories interfere with the acquisition of new information.
• Example: Difficulty in learning a new language because of the interference of a language already known.

Given:

A shopkeeper purchased 10 kg of Basmati rice at the rate of Rs. 50 per kg and 15 kg of ordinary rice at the rate of Rs. 20 per kg.

He mixed the two varieties of rice and sold it for a gain of 25%.

Formula Used:

Total cost price = (Cost of Basmati rice) + (Cost of ordinary rice)

Total selling price = Total cost price × (1 + Gain%)

Selling price per kg = Total selling price / Total quantity

Calculations

Cost of Basmati rice = 10 kg × Rs. 50 per kg = Rs. 500

Cost of ordinary rice = 15 kg × Rs. 20 per kg = Rs. 300

Total cost price = Rs. 500 + Rs. 300 = Rs. 800

Gain = 25% of Rs. 800 = 0.25 × Rs. 800 = Rs. 200

Total selling price = Total cost price + Gain = Rs. 800 + Rs. 200 = Rs. 1000

Total quantity of rice = 10 kg + 15 kg = 25 kg

Selling price per kg = Rs. 1000 / 25 kg = Rs. 40 per kg

∴ The selling price per kg of the mixed rice is Rs. 40 per kg.

The correct answer is - Z-test

Key Points

• Z-test
• The Z-test is a statistical test used to determine whether there is a significant difference between the means of two datasets.
• It is most effective when the sample size is large (typically n > 30).
• This test assumes that the data follows a normal distribution.
• It is particularly useful for testing hypotheses about population means when the population standard deviation is known.

Additional Information

• X2 test (Chi-squared test)
• Used to determine if there is a significant association between two categorical variables.
• Commonly used in tests of independence and goodness-of-fit.
• Kruskal-Wallis test
• A non-parametric method for testing whether samples originate from the same distribution.
• Used when the assumptions of ANOVA are not met.
• F-test
• Used to compare two variances to ascertain if they come from populations with equal variances.
• Commonly used in the context of ANOVA.

The correct answer is - A-I, B-III, C-IV, D-II

Key Points

• A-I: Bonn Convention - Migratory Species Conservation
• The Bonn Convention focuses on the conservation of migratory species across their range.
• This treaty aims to facilitate international cooperation to conserve migratory species and their habitats.
• B-III: CITES - Trades in Endangered Species
• CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) regulates international trade in specimens of wild animals and plants to ensure that their survival is not threatened.
• It provides varying degrees of protection to over 37,000 species of animals and plants.
• C-IV: Earth Summit - Sustainable Development
• The Earth Summit, also known as the Rio Summit, was a major United Nations conference held in Rio de Janeiro in 1992, focusing on sustainable development.
• This summit led to the adoption of Agenda 21, a comprehensive plan of action for sustainable development globally, nationally, and locally.
• D-II: Nagoya Protocol - Convention on Biological Diversity
• The Nagoya Protocol is a supplementary agreement to the Convention on Biological Diversity, focusing on access to genetic resources and the fair and equitable sharing of benefits arising from their utilization.
• This protocol aims to ensure that benefits derived from genetic resources are shared fairly and equitably with the countries providing those resources.

Additional Information

• Key Treaties and Conventions
• The Kyoto Protocol is an international treaty that commits its parties to reduce greenhouse gas emissions, based on the premise that global warming exists and human-made CO₂ emissions have caused it.
• The Paris Agreement is a legally binding international treaty on climate change, adopted by 196 countries at COP 21 in Paris in 2015, aimed at limiting global warming to well below 2°C.
• The Montreal Protocol is designed to protect the ozone layer by phasing out the production of numerous substances responsible for ozone depletion.
• International Environmental Governance
• International environmental agreements are crucial for addressing transboundary environmental issues such as climate change, biodiversity loss, and pollution.
• These agreements often involve commitments to specific targets, implementation measures, and mechanisms for monitoring and reporting.

The logic followed here is :-

'PEAK' is coded as 'KVZP'.

And,

'FOUR' is coded as 'ULFT'

Similarly,

'THIS' will be written as :

So, 'THIS' will be written as 'GSRH'.

Hence, the correct answer is "Option (2)".

The correct answer is - A, B and E Only

Key Points

• Middle term appears as predicate in both premises
• In the second figure of a syllogism, the middle term is typically the predicate in the major premise and the subject in the minor premise.
• This structure is crucial for establishing a valid logical connection between the premises.
• Commits fallacy of undistributed middle term
• The middle term must be distributed at least once in the premises to draw a valid conclusion.
• If the middle term is not distributed, it leads to the fallacy of undistributed middle, meaning the premises do not adequately cover all instances of the middle term.
• Conclusion distributes neither of its terms
• In the conclusion of a valid syllogism, at least one of the terms should be distributed.
• If neither the subject nor the predicate is distributed in the conclusion, it does not provide a definitive logical linkage to the premises.

Additional Information

• Distribution of terms
• A term is distributed if it refers to all members of its category.
• Understanding term distribution is critical in assessing the validity of syllogistic arguments.
• Figure and Mood in syllogisms
• Figures refer to the placement of the middle term in the premises.
• The mood indicates the form of the premises (A, E, I, O).
• Common fallacies in syllogisms
• Undistributed middle: Fails to provide a proper logical link.
• Illicit major/minor: Occurs when a term is distributed in the conclusion but not in the premises.

Given:

Distance 1 = 63 km

Distance 2 = 72 km

Total time = 3 hours

Formula Used:

Total time = Time 1 + Time 2

Time = Distance / Speed

Calculations:

Let the original speed be "x" km/h.

Time taken to travel the first distance = 63 / x hours

Time taken to travel the second distance = 72 / (x + 6) hours

According to the question: (63 / x) + (72 / (x + 6)) = 3

63(x + 6) + 72x = 3x(x + 6)

63x + 378 + 72x = 3x² + 18x

3x² - 117x - 378 = 0

x² - 39x - 126 = 0

x² - 42x + 3x - 126 = 0

x(x - 42) + 3(x - 42) = 0

(x - 42)(x - 3) = 0

So, x = 42 or x = -3

Since speed cannot be negative, the original speed is 42 km/h.

∴ The original speed is 42 km/h.

The correct answer is - A, B and C Only

Key Points

• Loam soil
• Loam soil provides a balanced mix of sand, silt, and clay, creating an ideal environment for earthworms due to its good drainage, aeration, and nutrient content.
• Gleyed soil
• Gleyed soils are characterized by poor drainage and waterlogging, which can limit earthworm activity. However, in certain conditions, some earthworms can still survive in these soils.
• Rendzina
• Rendzina soils, rich in organic matter and typically found in limestone areas, support a high level of earthworm activity.

Additional Information

• Podzol
• Podzol soils are acidic and low in nutrients, making them less favorable for earthworm activity. These conditions typically limit the presence and effectiveness of earthworms.
• Earthworm Benefits
• Earthworms improve soil structure, enhance nutrient cycling, and increase soil fertility through their burrowing and feeding activities.
• They contribute to the breakdown of organic matter, turning it into nutrient-rich humus that plants can use.
• Soil Health Indicators
• The presence of earthworms is often used as an indicator of soil health and fertility, as they thrive in well-aerated, nutrient-rich soils.
• Farmers and gardeners often monitor earthworm populations to assess the effectiveness of soil management practices.

The correct answer is - Gross Secondary Productivity

Key Points

• Gross Secondary Productivity
• It refers to the total gain in biomass by an animal, including all assimilated energy.
• This concept is used to measure the productivity of consumers in an ecosystem.
• It includes the energy obtained from the food consumed by the animal and stored as biomass.
• Gross Secondary Productivity is a key indicator in understanding the energy flow through different trophic levels.

Additional Information

• Gross Primary Productivity
• It is the total rate at which energy is captured by photosynthesis in an ecosystem.
• Gross Primary Productivity measures the energy production by primary producers (plants, algae).
• Net Primary Productivity
• Net Primary Productivity is the energy remaining after respiratory losses are subtracted from Gross Primary Productivity.
• This represents the energy available to herbivores and decomposers in an ecosystem.
• Net Secondary Productivity
• Net Secondary Productivity is the gain in biomass by consumers after subtracting the energy lost through respiration and waste.
• It represents the actual energy available for growth and reproduction of the consumer.

The correct answer is - Operational definition

Key Points

• Operational definition
• An Operational definition states that the term to be defined is correctly applied to a given case if and only if the performance of specified operations in that case yields a specified result.
• This type of definition is particularly important in scientific and technical contexts where precise and replicable measurements are crucial.
• It ensures clarity and consistency in the application of terms, especially in experimental and research settings.
• An example would be defining "intelligence" by the specific procedures and tests used to measure it, such as IQ tests.

Additional Information

• Synonymous definition
• A synonymous definition explains a term by providing another term that is synonymous with it, offering a direct substitute.
• While helpful in some contexts, it lacks the precision of operational definitions.
• Ostensive definition
• An ostensive definition explains the meaning of a term by pointing out examples.
• This method is often used for defining physical objects or actions, especially in early language learning.
• Quasi-ostensive definition
• A quasi-ostensive definition is similar to an ostensive definition but includes additional verbal information to clarify the meaning.
• This approach helps to provide more context and reduce ambiguity in the definition.

The correct answer is - Cooperative learning

Key Points

• Cooperative learning
• It is a teaching strategy where small groups of students work together on a common task.
• Each member of the group is responsible not only for learning what is taught but also for helping teammates learn, thus creating an atmosphere of achievement.
• Individual and group accountability is a fundamental element, ensuring that all members contribute to the group's success.
• Accountability measures include individual assessments and group evaluations to track progress and contributions.

Additional Information

• Elements of Cooperative Learning
• Positive interdependence
• Group members rely on each other to achieve the goal.
• Each member has a unique contribution to make to the joint effort.
• Face-to-face promotive interaction
• Students encourage and support one another’s learning.
• They explain, discuss, and teach what they know to their teammates.
• Interpersonal and small group skills
• Groups cannot function effectively if members do not have and use the needed social skills.
• These include skills in leadership, decision-making, trust-building, communication, and conflict-management.
• Group processing
• Group members discuss how well they are achieving their goals and maintaining effective working relationships.
• They describe what member actions are helpful and what actions need to change.
• Benefits of Cooperative Learning
• Improves academic achievement.
• Enhances student satisfaction with the learning experience.
• Develops social skills and group work skills.
• Promotes self-esteem and self-confidence.

The correct answer is - Firewall

Key Points

• Firewall
• A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
• It is designed to establish a barrier between a trusted internal network and untrusted external networks, such as the internet.
• Unlike hacking, phishing, and pharming, which are malicious activities, a firewall is a protective measure.

Additional Information

• Hacking
• Hacking refers to unauthorized access to data in a system or computer.
• It is considered a security risk because it can lead to data breaches and loss of sensitive information.
• Phishing
• Phishing is a cyber attack that involves tricking users into providing sensitive information, such as usernames, passwords, and credit card details, by pretending to be a trustworthy entity.
• It is a significant security risk as it can result in identity theft and financial loss.
• Pharming
• Pharming is a cyber attack intended to redirect a website's traffic to another, fraudulent site.
• It poses a security risk by compromising users' information and spreading malware.

The correct answer is - Informal Communication

Key Points

• Informal Communication
• Grapevine communication is a form of informal communication.
• It occurs naturally within an organization and is not officially sanctioned.
• Information is spread through social interactions and personal networks.
• It can be spontaneous and often spreads quickly.

Additional Information

• Types of Communication
• Formal Communication
• Structured and follows official channels within the organization.
• Includes reports, emails, and official meetings.
• Informal Communication
• Unstructured and occurs naturally among employees.
• Includes casual conversations, social interactions, and the grapevine.
• Advantages of Grapevine Communication
• Provides a quick and efficient way to disseminate information.
• Helps in building relationships and fostering a sense of community.
• Can act as an early warning system for potential issues within the organization.
• Disadvantages of Grapevine Communication
• Information may be distorted or inaccurate due to the informal nature.
• Can lead to the spread of rumors and misinformation.
• May undermine formal communication channels if relied upon excessively.

The correct answer is - APA

Key Points

• APA
• The APA (American Psychological Association) style is a widely-used referencing style in academic writing.
• It is a variant of the Harvard style, which is also known as the author-date system.
• Both styles use in-text citations with the author's surname and the year of publication.
• The reference list in APA style includes detailed information about each source, similar to Harvard style.

Additional Information

• Other Referencing Styles
• Chicago
• The Chicago style uses either a footnote and bibliography system or an author-date system.
• It is commonly used in history and the humanities.
• IEEE
• The IEEE style is used mainly in engineering and technology fields.
• It uses numbered citations in the text, which correspond to a numbered reference list.
• MLA
• The MLA (Modern Language Association) style is commonly used in literature and the humanities.
• It uses author-page number in-text citations and a Works Cited list.

The correct answer is - Background noise level

Key Points

• Background noise level
• The Noise Index L90 represents the noise level that is exceeded for 90% of the measurement period.
• This value is often used to indicate the background noise level in an environment.
• It helps in understanding the ambient noise conditions, which are present most of the time.

Additional Information

• Noise Measurement Indices
• L10
• Represents the noise level exceeded for 10% of the measurement period.
• Often used to indicate peak or maximum noise levels in an environment.
• L50
• Represents the noise level exceeded for 50% of the measurement period.
• Used to indicate the median noise level.
• L90
• Represents the noise level exceeded for 90% of the measurement period.
• Indicates the background noise level, which is the main subject of this question.
• Use of Noise Indices
• These indices are crucial for environmental noise assessments and urban planning.
• They help in designing noise mitigation strategies and understanding the impact of noise pollution on human health.

Shortcut Trick

Ratio of A, B, and C = 1/2 : 1/3 : 3/4

Multiply the ratio by the LCM of denominators (2, 3, 4) = 12 → 6 : 4 : 9

Total units = 6 + 4 + 9 = 19 units

19 units = Rs 3800 → 1 unit = Rs 200

Share of C = 9 units × 200 = Rs. 1800

∴ The correct answer is Rs. 1800.

Alternate Method

Given: Total sum = Rs 3800, Ratio of A : B : C = 1/2 : 1/3 : 3/4.

Formula Used: Share of C = (C’s ratio unit ÷ Sum of ratio units) × Total Amount

⇒ Simplified Ratio = (1/2 × 12) : (1/3 × 12) : (3/4 × 12)

⇒ A : B : C = 6 : 4 : 9

⇒ Sum of ratio units = 6 + 4 + 9 = 19

⇒ 19 units = Rs. 3800

⇒ 1 unit = 3800 ÷ 19 = Rs. 200

⇒ Share of C = 9 units × 200 = Rs. 1800

⇒ This matches the value given in option (4).

∴ The correct answer is Rs. 1800.

Additional Information

Simplifying Fractional Ratios

To convert a fractional ratio a/b : c/d into simplest form, multiply both terms by the LCM of denominators b and d.

Proportional Division

If a sum X is divided in the ratio a : b : c, then the share of C is calculated as [c / (a + b + c)] × X.

Compound Ratio

For two ratios a : b and c : d, the compound ratio is (a × c) : (b × d).

The correct answer is - A, B and E Only

Key Points

• Empiricism
• In qualitative research, empiricism involves collecting data through observation and interviews, focusing on understanding phenomena from the perspective of the participants.
• Emphasis on description of variables
• Qualitative research prioritizes detailed descriptions of variables to capture the complexity and context of the phenomena being studied.
• Explores experiences, meanings, perceptions and feelings
• Qualitative research is designed to explore experiences, meanings, perceptions, and feelings of participants, offering a deep understanding of their lived experiences.

Additional Information

• Rationalism vs. Empiricism
• Rationalism emphasizes reason and logic as the primary sources of knowledge, contrasting with empiricism, which emphasizes sensory experience and observation.
• Qualitative research aligns more with empiricism due to its focus on data derived from observation and interaction.
• Structured vs. Unstructured Methodology
• Qualitative research often employs a more flexible and unstructured methodology, allowing for in-depth exploration of complex phenomena.
• This approach contrasts with quantitative research, which typically uses a more structured and rigid methodology.
• Qualitative Data Analysis
• Data analysis in qualitative research often involves identifying patterns, themes, and categories within the data.
• Techniques such as coding, thematic analysis, and narrative analysis are commonly used to interpret qualitative data.

The correct answer is - Takshashila

Key Points

• Takshashila
• Unlike Nalanda, Vikramshila, and Odantpuri, Takshashila is not traditionally recognized as a Buddhist monastic university.
• Takshashila was an ancient center of learning located in present-day Pakistan, known for a variety of subjects like medicine, law, military science, and more, rather than being exclusively focused on Buddhist monastic education.

Additional Information

• Nalanda
• Located in present-day Bihar, India, it was one of the oldest universities in the world and a renowned center for Buddhist studies.
• Established in the 5^th century CE, it attracted students from all over Asia.
• Vikramshila
• Another major center of Buddhist learning in Bihar, India, founded by King Dharmapala in the late 8^th century.
• It was known for its specialized training in Tantric Buddhism.
• Odantpuri
• Situated in Bihar, India, it was established in the 8^th century by Gopala, the founder of the Pala dynasty.
• Recognized as a significant center of Buddhist education and learning.

The correct answer is - Eating 20 almonds a day decreases the risk of contracting heart disease

Key Points

• Scientific Hypothesis
• A scientific hypothesis is a statement that can be tested through experimentation and observation.
• The statement "Eating 20 almonds a day decreases the risk of contracting heart disease" can be tested by conducting controlled experiments and observing the results.
• It involves measurable and quantifiable factors, such as the number of almonds and the risk of heart disease.

Additional Information

• Characteristics of a Scientific Hypothesis
• It must be testable and falsifiable.
• It should be based on existing knowledge and should propose a possible explanation for a phenomenon.
• It should be formulated in a way that allows for clear and measurable predictions.
• Example of Testing a Hypothesis
• Design an experiment where one group consumes 20 almonds daily and another group does not.
• Monitor the health outcomes related to heart disease over a specific period.
• Analyze the data to determine if there is a significant difference in the risk of heart disease between the two groups.

The correct answer is - Buddhism

Key Points

• Buddhism
• Buddhist philosophy upholds the perception as a means to attain direct and unerring knowledge of the unique particular (svalakṣaṇa).
• In Buddhism, perception (pratyakṣa) is considered an immediate and direct experience of reality, free from conceptualization.
• This direct perception is crucial for achieving enlightenment and understanding the true nature of phenomena.

Additional Information

• Nyaya
• Nyaya school emphasizes logical reasoning and epistemology (the study of knowledge).
• Perception (pratyakṣa) is the foremost means of valid knowledge (pramāṇa) in Nyaya.
• Nyaya classifies perception into two types: indeterminate (nirvikalpaka) and determinate (savikalpaka).
• Vaisesika
• Vaisesika is a school of Indian philosophy that focuses on categorization of reality.
• It recognizes perception (pratyakṣa) as one of the valid means of knowledge (pramāṇa).
• Vaisesika emphasizes the role of substances, qualities, and actions as fundamental categories of reality.
• Jaina
• Jaina philosophy emphasizes non-absolutism (anekantavada) and the multiplicity of viewpoints.
• Perception (pratyakṣa) is considered a valid means of knowledge, but it is often complemented by other pramāṇas like inference (anumāna) and testimony (śabda).
• Jainism acknowledges the limitations of perception and the need for cross-verification through multiple perspectives.

The logic follows here:

Hence, the correct answer is "Option (1)".

The correct answer is - Keoladeo National Park

Key Points

• Keoladeo National Park
• Located in Bharatpur, Rajasthan, Keoladeo National Park is a famous avifauna sanctuary that hosts thousands of birds, especially during the winter season.
• It was declared a national park in 1982 and is also a UNESCO World Heritage Site.
• The park is known for its artificial wetland which plays a crucial role in maintaining the ecological balance and providing habitat to various species of birds.

Additional Information

• Importance of Artificial Wetlands
• Artificial wetlands are created to treat wastewater, control floods, and maintain biodiversity.
• They provide a habitat for a wide range of flora and fauna, particularly migratory birds.
• In Keoladeo National Park, the artificial wetland is crucial for sustaining the park’s rich birdlife, especially during dry seasons.
• Conservation Efforts
• Conservation strategies in Keoladeo National Park include water management, control of invasive species, and habitat restoration.
• The park's management regularly monitors the water levels and quality to ensure the wetland remains conducive for birdlife.
• It also engages in community-based conservation programs to involve local communities in protecting the park’s ecosystem.

The correct answer is - B, C and D Only

Key Points

• Multiprogramming
• Multiprogramming was introduced for the interleaved execution of multiple jobs by the same CPU.
• This technique improves CPU utilization and overall system efficiency.
• DOS
• DOS (Disk Operating System) is an example of a single-user operating system.
• It allows only one user to operate the computer at any given time.
• Multiuser Operating System
• A mainframe computer uses a multiuser operating system.
• This allows multiple users to access the computer resources simultaneously.

Additional Information

• Utility Program
• A utility program is not the first program loaded into the computer during booting.
• The first program loaded is usually the operating system's kernel.
• Single-User Operating Systems
• These systems are designed for one user at a time.
• Examples include DOS and some versions of Windows.
• Multiuser Operating Systems
• These systems support multiple users simultaneously.
• Mainframes and some versions of UNIX and Linux are examples.

The correct answer is - A, E, B, C, D

Key Points

• Publication of early newspapers (A)
• Early newspapers were among the first forms of mass media, dating back to the 17^th century.
• Invention of Radio (E)
• Radio was invented in the late 19^th century and became a popular medium for broadcasting news and entertainment in the early 20^th century.
• Development of Television Broadcasting (B)
• Television broadcasting began in the early 20^th century, with regular public broadcasts starting in the 1930s.
• Introduction of email (C)
• Email was introduced in the late 20^th century, becoming widely used in the 1990s as the internet became more accessible.
• Launch of online news websites (D)
• Online news websites began to emerge in the late 20^th and early 21^st centuries, changing the landscape of news consumption.

Additional Information

• Early Newspapers
• One of the earliest known newspapers was the "Relation aller Fürnemmen und gedenckwürdigen Historien," published in 1605 in Strasbourg.
• Newspapers became a crucial medium for disseminating information and public opinion.
• Radio
• Guglielmo Marconi is often credited with the invention of the radio.
• Radio became a major medium for news, music, and entertainment by the 1920s.
• Television Broadcasting
• First demonstrated in the 1920s, television rapidly grew into a dominant medium.
• The 1950s are often considered the "Golden Age of Television" in the United States.
• Email
• Email was first developed in the 1970s, with Ray Tomlinson credited for the invention of networked email.
• It revolutionized communication, making it faster and more efficient.
• Online News Websites
• The first online news website, "The Electronic Telegraph," was launched by The Daily Telegraph in 1994.
• Online news has become a primary source of information for many people, offering real-time updates.

The correct answer is - Equivocation

Key Points

• Equivocation
• Equivocation occurs when a key term or phrase in an argument is used in an ambiguous way, with one meaning in one part of the argument and another meaning in another part.
• In the given statement, the term "man" is used ambiguously to refer to both "human beings" in general and "male humans" specifically.
• The argument falsely concludes that no woman has an immortal soul by equivocating the term "man".

Additional Information

• Strawman Fallacy
• Occurs when someone misrepresents an opponent's position to make it easier to attack.
• Example: "People who support space exploration want to waste money on frivolous projects." This misrepresents the position of supporting space exploration for scientific advancement.
• Red Herring
• Introduces an irrelevant topic to divert attention from the original issue.
• Example: During a debate on climate change, someone brings up the issue of unemployment to distract from the main topic.
• Bandwagon Argument
• Concludes that an argument is true because many people believe it.
• Example: "Everyone is investing in this stock, so it must be a good investment."

The correct answer is Option 1.

Key Points

• The passage states that Persian prose in the main treated "serious and learned topics."
• It also mentions that the purpose of the authors was "to inform and to uplift rather than to amuse."

Therefore, the correct answer is Option 1.

Correct Sentence: "According to the passage, Persian prose deals with serious and learned topics."

 Additional Information

• Option 2: This option is incorrect because the passage states that the purpose of Persian prose was to inform and to uplift rather than to amuse.
• Option 3: This option is incorrect because the passage does not mention comedy as a focus of Persian prose.
• Option 4: This option is incorrect because the passage does not mention religious practices as the sole focus of Persian prose.

The correct answer is Option 1.

Key Points

• The passage states that Sanskrit developed a "simple and dignified prose style."
• It also mentions that this style was employed in various spheres of intellectual and imaginative activities.

Therefore, the correct answer is Option 1.

Correct Sentence: "Sanskrit prose is described as simple and dignified in the passage."

 Additional Information

• Option 2: This option is incorrect because the passage does not describe Sanskrit prose as complex and humorous.
• Option 3: This option is incorrect because the passage does not mention that Sanskrit prose is solely poetic and lyrical.
• Option 4: This option is incorrect because the passage states that Sanskrit prose was employed in various spheres, not limited to religious themes.

The correct answer is Option 2.

Key Points

• The passage mentions that “the fantastic adventure of the Arabian Nights cycle gave scope to the creative imagination.”

Therefore, the correct answer is Option 2.

Correct Sentence: "The Arabian Nights allowed scope for creative imagination."

 Additional Information

• Option 1: This option is incorrect because the passage does not mention that The Ramayana allowed scope for creative imagination.
• Option 3: This option is incorrect because the passage does not mention that The Mahabharata allowed scope for creative imagination.
• Option 4: This option is incorrect because the passage does not mention that The Panchatantra allowed scope for creative imagination.

The correct answer is Option 3.

Key Points

• The most important literary event in the nineteenth century was the emergence of literary prose in all the modern Indian languages.
• Both Sanskrit and Persian had a vast body of prose.
• Persian prose in the main treated “serious and learned topics”; the purpose of the authors was “to inform and to uplift rather than to amuse”.
• Sanskrit developed a simple and dignified prose style from the time of the composition of the Upanisads and employed prose in various spheres of intellectual and imaginative activities.

Therefore, the correct answer is Option 3.

Correct Sentence: "The most important literary event in the nineteenth century was the emergence of literary prose in all the modern Indian languages."

Additional Information

• Option 1: This option is incorrect because the passage does not mention the invention of poetic forms as the most significant literary event.
• Option 2: This option is incorrect because the development of drama is not stated as the most significant literary event in the passage.
• Option 4: This option is incorrect because the translation of foreign literature is not highlighted as the most significant literary event in the passage.

The correct answer is Option 2.

Key Points

• Persian prose in the main treated “serious and learned topics”.
• The purpose of the authors was “to inform and to uplift rather than to amuse”.

Therefore, the correct answer is Option 2.

Correct Sentence: "The purpose of authors writing in Persian prose, as described in the passage, was to inform and uplift the readers."

Additional Information

• Option 1: This option is incorrect because the passage states that the purpose was “to inform and to uplift rather than to amuse”.
• Option 3: This option is incorrect because the passage does not mention promoting religious doctrines as the primary purpose.
• Option 4: This option is incorrect because the passage does not indicate that providing translations of Sanskrit texts was the purpose.