UGC NET Paper 1: Held on 7th Jan 2025 Shift 1 (Previous Year Paper)

Let the expenditures of Company A in 2019 and 2023 be 4x and 3x respectively.

And Incomes in 2019 and 2023 be a and b respectively.

$\frac{a-4x}{4x}=0.25$

Solving this, a = 5x.

similarly, 

$\frac{b-3x}{3x}=0.5$

Solving this, b = 4.5x.

Now, $\frac{5x-4.5x}{4.5x}\times100= \frac{100}{9}$ %

Let the income of Company b in 2018 be b.

Let the income in 2020 be x.

According to the given information:

$\frac{x-b}{b}=0.5$

solving, x = 1.5b.

Required ratio:

$\frac{b}{x}=\frac{1}{1.5}$

b : x = 2 : 3.

Let the expenditure of both the companies in the year 2022 be x crores.

To calculate x,

$\frac{52-x}{x}=0.3$

Solving this, x = 40 crores.

Now, let the income of company A in 2022 be y crores.

To calculate y:

$\frac{y-40}{40}=0.45$

Solving this, y = 58 crores.

Avg incomes: $\frac{58+52}{2}=55$ crores.

Let the expenditure of company B be x.

$\frac{70-x}{x}=0.4$

Solving, the above equation, x = 50 crores.

Let expenditure be x.

Let the income of company A and B for the year 2021 be a and b respectively.

For a,

$\frac{a-x}{x}=0.6$

Solving this, a = 1.6x.

For b,

$\frac{b-x}{x}=0.45$

Solving this, b = 1.45x.

$\frac{a}{b}=\frac{1.6}{1.45}$

=> a : b = 32 : 29

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

Key Points

• Madhuri R. Shah
• Served as UGC Chairperson from 1981 to 1986.
• Yashpal
• Held the position of UGC Chairperson from 1986 to 1991.
• Manmohan Singh
• Chaired the UGC from 1991 to 1992, before his role as Finance Minister.
• G. Ram Reddy
• Was the UGC Chairperson from 1992 to 1996.
• Armaity S. Desai
• Served as the UGC Chairperson from 1996 to 1999.

Additional Information

• University Grants Commission (UGC)
• UGC is a statutory body set up by the Indian government in 1956 under the UGC Act.
• It is responsible for coordination, determination, and maintenance of standards of higher education in India.
• The UGC provides recognition to universities in India and disburses funds to such recognized universities and colleges.
• Roles and Responsibilities of UGC Chairpersons
• Overseeing the allocation of funds to universities and colleges.
• Ensuring the maintenance of education standards in higher education institutions.
• Implementing new policies and reforms in the higher education sector.

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

Key Points

• Round Robin Brain Storming
• Discussing a topic in turn within a small group
• Each member of the group takes a turn to share their ideas or thoughts.
• This strategy encourages equal participation from all group members.
• Numbered Heads Together
• Assigning roles and rotating group representatives
• Each member of the group is assigned a number, and the teacher calls a number randomly to answer.
• Promotes collaborative thinking and accountability within the group.
• Fishbowl
• Observing and listening to a core group discussion
• A small group of students discusses a topic while the rest of the class observes.
• Encourages active listening and understanding different perspectives.
• Peer Teaching
• Students teaching a specific topic to others
• Involves students teaching their peers, enhancing both the teacher's and learners' understanding.
• Promotes mastery of content and boosts confidence.

Additional Information

• Cooperative Learning Strategies
• These strategies are designed to improve learning through group activities.
• Encourages collaboration, communication, and critical thinking among students.
• Benefits of Cooperative Learning
• Promotes higher academic achievement and retention.
• Develops social and interpersonal skills.
• Encourages student engagement and participation.
• Implementation Tips
• Clearly define roles and responsibilities within groups.
• Ensure tasks are structured to require group interdependence.
• Provide guidance and support to facilitate effective collaboration.

The correct answer is - Perceptual constancy

Key Points

• Perceptual constancy
• This phenomenon refers to the ability of the human brain to maintain a stable perception of an object despite changes in the sensory input.
• Size constancy is a type of perceptual constancy where an object is perceived as having a constant size, even when its distance from the observer changes.
• When a car moves away from you, it appears smaller on the retina, but your brain understands that the car's actual size remains the same.

Additional Information

• Other Types of Perceptual Constancy
• Shape constancy
• Even when the shape of an object appears to change due to a change in the angle of view, the brain recognizes that the object's shape remains constant.
• Color constancy
• The perceived color of an object remains relatively constant under varying illumination conditions.
• Brightness constancy
• The brain perceives an object as having a constant brightness even when the lighting conditions change.
• Relevance in Daily Life
• Perceptual constancy helps in recognizing familiar objects under different conditions and perspectives, aiding in navigation and interaction with the environment.
• This concept is crucial in various fields such as psychology, design, and human-computer interaction to ensure that visual systems are intuitive and effective.

The correct answer is - Probable

Key Points

• Arguments by Analogy
• Arguments by analogy aim to show that if two or more things are similar in some respects, they are likely to be similar in other respects as well.
• These arguments are not logically necessary, but they suggest a probable conclusion.
• Since they rely on the degree of similarity between the cases being compared, they are inherently probable rather than certain.

Additional Information

• Key Characteristics of Arguments by Analogy
• They compare two or more items, suggesting that what is true for one is likely true for the other.
• Strength of the argument depends on the relevance and number of similarities between the items being compared.
• They are often used in legal reasoning, scientific hypotheses, and everyday decision making.
• Evaluation of Arguments by Analogy
• Examine the strength of the similarities: Are the similarities relevant and significant?
• Consider the number of similarities: More similarities can strengthen the argument.
• Assess the dissimilarities: Are there significant differences that undermine the analogy?

The correct answer is - 3) C, D, E Only

Key Points

• Logic
• Ancient Indian universities, such as Takshashila and Nalanda, included the study of Logic as part of their curriculum.
• Logic, often referred to as "Tarka" or "Nyaya," was essential for philosophical and academic debates.
• Medicine
• Medicine was a significant subject in ancient Indian education, known as "Ayurveda."
• Universities like Takshashila were famous for their medical schools and produced renowned medical practitioners.
• Philosophy
• Philosophy, or "Darshana," was a core subject taught in ancient Indian universities.
• Philosophical teachings included various schools of thought like Vedanta, Samkhya, and Buddhism.

Additional Information

• Ancient Indian Education System
• Ancient Indian education was holistic and covered a broad range of subjects including sciences, arts, and humanities.
• Key centers of learning included universities like Takshashila, Nalanda, and Vikramashila.
• Takshashila University
• Considered one of the earliest universities in the world, dating back to at least the 5th century BCE.
• Students from various regions came to study subjects such as medicine, politics, warfare, and philosophy.
• Nalanda University
• Established in the 5th century CE, Nalanda was a major center for learning in ancient India.
• It attracted scholars from different countries and offered education in subjects like logic, grammar, medicine, and Buddhist studies.

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

Key Points

• A - IV: Chirographic Culture
• Refers to a culture where writing is the primary means of communication.
• It emphasizes visual representation of words and ideas.
• B - I: Typographic Culture
• Refers to a culture dominated by print media.
• Typographic culture emerged with the invention of the printing press which revolutionized the dissemination of information.
• C - II: Oral Culture
• Relies on spoken word for communication.
• In oral culture, knowledge and traditions are passed down through speaking.
• D - III: Writing
• Involves spatial understanding through the use of images and symbols.
• Writing systems help in recording and conveying information visually.

Additional Information

• Chirographic Culture
• The term "chirography" comes from Greek words meaning "hand" and "writing".
• It is distinguished from oral culture by its reliance on visual symbols rather than auditory signals.
• Typographic Culture
• It started in the 15th century with the invention of the Gutenberg press.
• This culture facilitated the mass production of books and the spread of literacy.
• Oral Culture
• Predominantly existed before the invention of writing systems.
• In such cultures, knowledge is often memorized and transmitted through storytelling and oral traditions.
• Writing
• Forms the basis of record-keeping and written communication.
• It allows for the preservation and transmission of information across generations.

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

Key Points

• Standard Normal Distribution
• The standard normal variate, Z, has a mean of 0 and a standard deviation of 1.
• Probabilities for different ranges of Z can be derived from the standard normal distribution table.
• Calculation of Probabilities
• P(0 ≤ Z ≤ 1) is the probability that Z lies between 0 and 1.
• P(-∞ ≤ Z ≤ 0) is the cumulative probability from negative infinity to 0.
• P(1 ≤ Z ≤ 3) is the probability that Z lies between 1 and 3.
• P(2 ≤ Z ≤ +∞) is the probability that Z is greater than or equal to 2.
• Ordering Probabilities
• Probabilities in increasing order are: P(2 ≤ Z ≤ +∞), P(1 ≤ Z ≤ 3), P(0 ≤ Z ≤ 1), P(-∞ ≤ Z ≤ 0).

Additional Information

• Standard Normal Distribution Properties
• The total area under the standard normal distribution curve is 1.
• The curve is symmetric around the mean, which is 0.
• Approximately 68% of the data lies within one standard deviation of the mean (i.e., between -1 and 1).
• Approximately 95% of the data lies within two standard deviations of the mean (i.e., between -2 and 2).
• Using Z-Tables
• Z-tables provide the cumulative probability from the mean (0) to a given Z-score.
• To find the probability for a range, subtract the cumulative probability at the lower bound from the cumulative probability at the upper bound.

The correct answer is - Ministry of Human Resource Development

Key Points

• Ministry of Human Resource Development
• The Ministry of Education was previously known as the Ministry of Human Resource Development (MHRD).
• This renaming took place in 2020 to better reflect the focus on education.
• The decision was part of the National Education Policy 2020 reforms.
• The MHRD was responsible for the development of human resources in the areas of education and literacy.

Additional Information

• National Education Policy 2020
• The National Education Policy (NEP) 2020 aims to transform India’s education system by 2040.
• It was approved by the Union Cabinet of India on 29 July 2020.
• The policy includes holistic and multidisciplinary approaches to education.
• Historical Background
• The Ministry of Human Resource Development was formed on 26 September 1985 after the merger of the Ministry of Education and the Ministry of Culture.
• The main objective was to enhance the development of human resources in India.
• Functions of the Ministry of Education
• The Ministry of Education is responsible for:
• Formulating the national policies related to education.
• Ensuring access to quality education for all citizens.
• Promoting research and innovation in educational institutions.

The correct answer is - correlational research

Key Points

• Correlational research
• Correlational research is primarily used to determine whether and to what degree a relationship exists between two or more variables.
• It does not involve manipulation of variables; instead, it observes naturally occurring variables.
• Key terms related to this research include covariance, correlation coefficient, and direction of the relationship.
• It helps in identifying patterns and making predictions but does not establish causality.

Additional Information

• Case study
• Involves an in-depth, detailed examination of a single case or a small number of cases.
• Often used in qualitative research to explore complex issues in real-life contexts.
• Provides rich descriptive data but may not be generalizable to a wider population.
• Longitudinal research
• Involves repeated observations of the same variables over a period of time.
• Helps in understanding long-term effects and changes.
• Can establish sequences of events and infer causality more effectively than cross-sectional studies.
• Archival research
• Utilizes existing records or datasets to answer research questions.
• Examples include historical documents, statistical databases, and previous research studies.
• Cost-effective but may be limited by the quality and scope of existing data.

The logic follows here:

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

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

Key Points

• Converting to Decimal
• (11111.11)2:
• Binary to Decimal: 1×2⁴ + 1×2³ + 1×2² + 1×2¹ + 1×2⁰ + 1×2⁻¹ + 1×2⁻² = 16 + 8 + 4 + 2 + 1 + 0.5 + 0.25 = 31.75
• (102.3)6:
• Base-6 to Decimal: 1×6² + 0×6¹ + 2×6⁰ + 3×6⁻¹ = 36 + 0 + 2 + 0.5 = 38.5
• (42.5)8:
• Octal to Decimal: 4×8¹ + 2×8⁰ + 5×8⁻¹ = 32 + 2 + 0.625 = 34.625
• (32.6)16:
• Hexadecimal to Decimal: 3×16¹ + 2×16⁰ + 6×16⁻¹ = 48 + 2 + 0.375 = 50.375
• Order in Decimal:
• (11111.11)2 = 31.75
• (42.5)8 = 34.625
• (102.3)6 = 38.5
• (32.6)16 = 50.375
• The correct ascending order is: A (31.75), C (34.625), B (38.5), D (50.375)

Additional Information

• Base Number Systems
• Numbers are represented in different bases, such as binary (base-2), octal (base-8), decimal (base-10), and hexadecimal (base-16).
• Each digit in a number represents a different power of the base.
• Conversion to Decimal
• To convert a number from a base to decimal, multiply each digit by its base raised to the power of its position, starting from 0 for the rightmost digit.
• Add the results to get the decimal equivalent.
• Importance in Exams
• Understanding base conversions is crucial for solving problems in digital electronics and computer science.
• Accuracy in converting between bases ensures correct answers in multiple-choice questions.

Given:

Speed of boat in still water = 10 Km/hr

Downstream distance = 26 Km

Upstream distance = 14 Km

Formula Used:

Downstream speed = (Speed of boat in still water + Speed of stream)

Upstream speed = (Speed of boat in still water - Speed of stream)

Time = Distance/Speed

Calculations

Let the speed of stream be "x" Km/hr

Time taken to travel downstream = 26 / (10 + x)

Time taken to travel upstream = 14 / (10 - x)

According to the question, both times are equal:

26 / (10 + x) = 14 / (10 - x)

Cross-multiplying gives:

26 × (10 - x) = 14 × (10 + x)

260 - 26x = 140 + 14x

x = 120 / 40 = 3

∴ The speed of the stream is 3 Km/hr

The correct answer is - Moodle

Key Points

• Moodle
• Moodle is a widely-used Learning Management System (LMS) that supports integration with various assessment tools.
• It provides robust features for tracking student progress and performance over time.
• Supports integration with numerous third-party plugins to enhance its functionality for assessments and reporting.
• Offers customizable grading systems and detailed analytics for monitoring student engagement and success.

Additional Information

• Other Options
• Zoom
• Primarily a video conferencing tool, not a comprehensive LMS.
• Lacks extensive features for integrating multiple assessment tools and tracking student progress.
• Grammarly
• A tool focused on grammar and writing assistance.
• Not designed as an LMS and does not support wide-ranging educational assessments or progress tracking.
• Turnitin
• Specializes in plagiarism detection and academic integrity.
• While useful for assessments, it does not provide a full LMS experience with student progress tracking.

The correct answer is - Pyramid type of organisation being replaced by a flat organisation

Key Points

• Pyramid type of organisation being replaced by a flat organisation
• The Indian Education Commission (1964-66) observed that the traditional pyramid structure in educational institutions was becoming outdated.
• The recommendation was to move towards a flat organisational structure to improve efficiency and communication.
• This shift aimed at making educational institutions more responsive and adaptive to changing educational needs.

Additional Information

• Indian Education Commission (1964-66)
• Also known as the Kothari Commission, named after its chairman, Daulat Singh Kothari.
• It aimed at improving the quality of education in India and creating a comprehensive policy framework.
• Some key areas addressed included:
• Curriculum Development: Emphasis on making education more relevant to national needs.
• Teacher Education: Improving the quality of teachers through better training programs.
• Educational Administration: Recommending administrative reforms for more effective management of educational institutions.
• Flat Organisational Structure
• Characterized by fewer hierarchical levels, leading to faster decision-making and better communication.
• Encourages a more collaborative and inclusive approach within institutions.
• Adopted by many modern organizations to promote innovation and efficiency.

The correct answer is - The Strawman

Key Points

• The Strawman
• A Strawman fallacy involves misrepresenting an opponent's argument to make it easier to attack.
• It typically exaggerates, distorts, or oversimplifies the original argument, creating a "straw man" that is easier to knock down.
• This tactic diverts attention from the actual issue and can mislead the audience into thinking the opponent's position is weaker than it truly is.

Additional Information

• Appeal to Pity
• This fallacy attempts to win an argument by exploiting the opponent's feelings of pity or guilt.
• It shifts focus from the actual argument to the emotional state of the opponent.
• The Red Herring
• A distraction technique that introduces an irrelevant topic to divert attention from the main issue.
• Often used to avoid addressing a difficult or contentious point.
• The Appeal to the Populace
• Also known as "argumentum ad populum," it seeks to persuade by arguing that something is true or good because many people believe it.
• Relies on the popularity of a premise rather than its intrinsic merit.

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

Key Points

• Inter-connected psychodynamics of oral thoughts
• Walter J. Ong described a sequence of psychodynamics associated with oral traditions.
• The sequence includes several characteristics that define how oral cultures process and convey information.
• The correct sequence is: Additive, Aggregative, Copious, Traditionalist, and Close to the human life.

Additional Information

• Additive
• Oral cultures tend to add information in a cumulative, rather than subordinative, way.
• Aggregative
• Oral expression often relies on formulas and standard phrases to preserve information.
• Copious
• Oral traditions are marked by a tendency to be abundant and repetitive to aid memory.
• Traditionalist
• Oral cultures emphasize preserving the wisdom of the past and tradition.
• Close to the human life
• Oral traditions are closely related to everyday life and human experiences.

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

Key Points

• Boudhayana - Sulva Sutra
• Boudhayana is known for his work on the Sulva Sutra, which is a part of the Shulba Sutras, ancient Indian texts on geometry.
• Nagarjuna - Rasaratnakara
• Nagarjuna is credited with the work Rasaratnakara, which deals with alchemy and chemistry in ancient India.
• Brahma Gupta - Brahma Sputa Siddanthika
• Brahma Gupta is known for his mathematical treatise Brahma Sputa Siddanthika.
• Vishnu Gupta - Arthashastra
• Vishnu Gupta, also known as Chanakya, authored the ancient Indian political treatise Arthashastra.

Additional Information

• Sulva Sutra
• The Sulva Sutras are ancient Indian texts that form part of the larger corpus of Srauta Sutras.
• They provide rules for constructing altars and sacrificial fire pits using geometric principles.
• Rasaratnakara
• Rasaratnakara is a significant text in the field of alchemy and chemistry.
• Nagarjuna's contributions in this text include the use of mercury and other metals in medical preparations.
• Brahma Sputa Siddanthika
• Brahma Gupta's Brahma Sputa Siddanthika is a key mathematical and astronomical treatise.
• It includes significant contributions to arithmetic, algebra, and astronomy.
• Arthashastra
• The Arthashastra is an ancient Indian treatise on statecraft, economic policy, and military strategy.
• It is attributed to Chanakya, who was also known as Kautilya or Vishnu Gupta.

The correct answer is - Inter-observer reliability

Key Points

• Inter-observer reliability
• Refers to the consistency of observations and scoring made by different observers.
• Ensures that the observed behaviors are being interpreted similarly by all observers involved.
• Critical for maintaining validity and reliability in behavioral research.
• High inter-observer reliability indicates that the measurement process is objective and not influenced by personal biases.

Additional Information

• Observer bias
• Occurs when an observer's expectations or personal beliefs influence their observations.
• Leads to systematic errors in data collection.
• Observer drift
• Refers to a gradual change in the way observers score behaviors over time.
• Can reduce the consistency and reliability of the observations.
• Subject reactivity
• Occurs when subjects alter their behavior because they are aware they are being observed.
• Can affect the authenticity of the observed behaviors.

The correct answer is - C, D, E Only

Key Points

• Dominant reading
• This refers to the reader/viewer fully sharing the text's codes and accepting and reproducing the preferred meaning.
• Oppositional reading
• In this type of reading, the audience understands the preferred meaning but rejects it, creating their own interpretation.
• Negotiated reading
• The reader partly shares the text's codes and broadly accepts the preferred meaning but modifies it to reflect their own position and experiences.

Additional Information

• Stuart Hall's Encoding/Decoding Model
• Stuart Hall proposed that media texts are encoded with meaning by producers and decoded by audiences.
• The way in which an audience decodes a text can vary significantly, creating different interpretations.
• Reception Theory
• Hall's model is a cornerstone of reception theory, which emphasizes the role of the audience in interpreting media texts.
• Reception theory challenges the idea that there is a single, fixed meaning in any text.

The correct answer is - B, C and E Only

Key Points

• National Action Plan on Climate Change (NAPCC)
• The NAPCC outlines a comprehensive strategy to address the challenges posed by climate change in India.
• It includes a set of eight national missions that focus on various aspects of climate adaptation and mitigation.
• National Solar Mission (B)
• Aims to promote the development and use of solar energy for power generation and other uses.
• Seeks to establish India as a global leader in solar energy.
• National Water Mission (C)
• Focuses on the conservation of water, minimizing wastage, and ensuring more equitable distribution.
• Seeks to improve the efficiency of water use by 20%.
• National Mission for Green India (E)
• Aims to enhance carbon sinks in sustainably managed forests and other ecosystems.
• Focuses on protecting, restoring, and enhancing India’s diminishing forest cover.

Additional Information

• Other Missions under NAPCC:
• National Mission for Enhanced Energy Efficiency
• Aims to strengthen the market for energy efficiency by creating conducive policy and regulatory regimes.
• National Mission on Sustainable Habitat
• Focuses on promoting energy efficiency in urban planning, improving solid waste management and ensuring better urban transport.
• National Mission for Sustaining the Himalayan Ecosystem
• Seeks to understand the impact of climate change on the Himalayan ecosystem and promote sustainable development in the region.
• National Mission for Sustainable Agriculture
• Aims to make Indian agriculture more resilient to climate change through the development of climate-resilient crops and promoting sustainable agricultural practices.

The correct answer is - It is made available to users.

Key Points

• Open Source
• The term open source means that the source code of the software is freely available for anyone to view, modify, and distribute.
• This ensures that users can inspect the code for vulnerabilities, customize the software to their needs, and contribute to its development.
• Popular examples of open source operating systems include Linux and Android.

Additional Information

• Benefits of Open Source
• Open source projects often have large communities that contribute to the development and maintenance of the software.
• These communities can quickly identify and address security issues, making the software potentially more secure.
• Open source software is usually cost-effective, as it is often free to use and distribute.
• Open Source Licensing
• Open source software is distributed under licenses that comply with the Open Source Definition—prominent examples include the GNU General Public License (GPL) and the MIT License.
• These licenses ensure that the software remains free and open for all users, providing rights to use, modify, and share the software.

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

Key Points

• Group A
• Classified as Human Carcinogen.
• Substances in this category have sufficient evidence of carcinogenicity in humans.
• Group B
• Classified as Probable Human Carcinogen.
• This group is further divided into two subgroups: B1 and B2. B1 indicates limited evidence in humans and sufficient evidence in animals, while B2 indicates sufficient evidence in animals and inadequate evidence or no data in humans.
• Group C
• Classified as Possible Human Carcinogen.
• Substances in this category have limited evidence of carcinogenicity in animals and inadequate or no data in humans.
• Group D
• Classified as Not Classified.
• Substances in this category have inadequate evidence or no evidence of carcinogenicity in humans and animals.

Additional Information

• Carcinogenicity Classification
• The classification is based on the weight of evidence from epidemiological studies and experimental data.
• It is used by regulatory agencies to assess the potential cancer risk posed by substances to humans.
• Regulatory Agencies
• Agencies like the Environmental Protection Agency (EPA) and the International Agency for Research on Cancer (IARC) classify substances based on carcinogenicity.
• These classifications help guide regulatory actions and public health policies.

The correct answer is - Connotation

Key Points

• Connotation
• The connotation of a text refers to its associated or secondary meanings, emotions, or ideas that are not explicitly stated but implied by the text.
• It is distinct from denotation, which is the literal, dictionary definition of a word.
• Understanding the connotation of a text is crucial for interpreting the deeper cultural and emotional layers within it.

Additional Information

• Denotation
• Denotation refers to the exact, literal meaning of a word as found in a dictionary.
• For example, the denotation of the word "snake" is a legless reptile.
• Closed Text
• A closed text is a type of text that is intended to be interpreted in a specific, limited way.
• It does not allow for multiple interpretations or the reader's personal input.

According to the given information,

Thus, according to the given codes '536' is the code for the word 'Coffee is hot'.

Hence, the correct answer is "Option (3)".

The correct answer is - Corresponding

Key Points

• Corresponding
• When two propositions have the same subject and predicate terms, and they agree in quality but differ in quantity, they are known as corresponding.
• Quality refers to whether the proposition is affirmative or negative.
• Quantity refers to whether the proposition is universal or particular.
• For example:
• "All S are P" (universal affirmative) and "Some S are P" (particular affirmative) are corresponding propositions.
• "No S are P" (universal negative) and "Some S are not P" (particular negative) are also corresponding propositions.

Additional Information

• Contraries
• Contrary propositions cannot both be true but can both be false.
• For example, "All S are P" and "No S are P" are contraries.
• Sub-Contraries
• Sub-contrary propositions cannot both be false but can both be true.
• For example, "Some S are P" and "Some S are not P" are sub-contraries.
• Contradictory
• Contradictory propositions cannot both be true and cannot both be false; one must be true and the other false.
• For example, "All S are P" and "Some S are not P" are contradictories.

The correct answer is - B, C and D Only

Key Points

• B: Keyboard communicating with a computer
• This is an example of a simplex transmission mode.
• In simplex mode, communication is unidirectional, meaning data flows in only one direction.
• A keyboard sends data to the computer without receiving any response from it.
• C: Walkie-Talkies
• Walkie-talkies operate on a half-duplex transmission mode.
• In half-duplex mode, communication can occur in both directions, but not simultaneously.
• Users take turns to speak and listen.
• D: Telephone calls
• Telephone calls are an example of full-duplex transmission mode.
• In full-duplex mode, communication can occur in both directions simultaneously.
• Both parties can speak and listen at the same time.

Additional Information

• Radio broadcast
• A radio broadcast is an example of a simplex transmission mode, not automatic.
• In radio broadcasting, communication is unidirectional, from the radio station to listeners.
• Listeners cannot send data back to the radio station.
• Transmission Modes
• Simplex
• Unidirectional communication.
• Examples: Keyboard to computer, radio broadcasting.
• Half-Duplex
• Bidirectional communication but not simultaneously.
• Examples: Walkie-Talkies, CB radios.
• Full-Duplex
• Bidirectional communication simultaneously.
• Examples: Telephone calls, video conferencing.

The correct answer is - Universal, particular and configuration (Jāti, Vyakti and Ākṛti)

Key Points

• Universal, particular and configuration (Jāti, Vyakti and Ākṛti)
• According to the Naiyāyikās, words signify universals (Jāti), particulars (Vyakti), and configurations (Ākṛti).
• This comprehensive understanding enables the Naiyāyikās to explain how language and meaning are interconnected.
• They believe that these three aspects are essential to grasp the full significance of words.

Additional Information

• Universals (Jāti)
• Universals refer to the general characteristics or qualities that are shared by a class of objects.
• For example, the concept of "cowness" is a universal that applies to all individual cows.
• Particulars (Vyakti)
• Particulars are the individual instances or entities that embody the universals.
• An individual cow, for instance, is a particular that exemplifies the universal "cowness."
• Configurations (Ākṛti)
• Configurations refer to the specific arrangement or structure of an object.
• This concept helps in understanding how different particulars can share the same universal while having unique configurations.

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

Key Points

• Metacognitive practices
• Help learners to plan, monitor, and evaluate their own progress, thereby fostering self-regulation and independent learning.
• Make a unique contribution to learning that goes beyond the influence of cognitive ability, enhancing overall educational outcomes.
• Improve the academic achievements of learners by enabling them to be more strategic and effective in their learning approaches.
• Assist students in transferring what they have learnt from one context to the next, promoting adaptability and application of knowledge in various situations.

Additional Information

• Metacognitive Skills
• Include techniques such as self-questioning, thinking aloud, and using graphic organizers to help structure thoughts.
• Encourage learners to become more aware of their own thinking processes, leading to improved problem-solving skills.
• Support the development of critical thinking and reflective practices, essential for lifelong learning.
• Academic Success
• Linked to a learner’s ability to regulate their own learning through effective use of metacognitive strategies.
• Enhanced when students are taught how to use metacognitive skills in conjunction with their regular study habits.

Given:

The age of the father is twice that of the elder son.

Calculations:

Let the age of the elder son be "x" years.

Then, the age of the father is 2x years.

Let the age of the younger son be "y" years.

According to the question:

2x + 10 = 3(y + 10)

2x + 10 = 3y + 30

2x - 3y = 20 ----(i)

Also given, the difference between the ages of the two sons is 15 years:

x - y = 15 ----(ii)

Solving equations (i) and (ii):

From equation (ii): x = y + 15

Substituting in equation (i):

2(y + 15) - 3y = 20

2y + 30 - 3y = 20

y = 10

Therefore, x = y + 15 = 10 + 15 = 25

So, the age of the elder son is 25 years.

And the age of the father is 2x = 2 × 25 = 50 years.

∴ The age of the father is 50 years.

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

Key Points

• Global Warming Potential (GWP)
• GWP is a measure of how much heat a greenhouse gas traps in the atmosphere over a specific time period, usually 100 years.
• It compares the amount of heat trapped by a certain mass of the gas to the amount of heat trapped by a similar mass of Carbon dioxide (CO2), which has a GWP of 1.
• Order of GWP from lowest to highest
• Carbon dioxide (CO2) - GWP of 1.
• Methane (CH4) - GWP of approximately 25.
• Nitrous oxide (N2O) - GWP of approximately 298.
• CFC-11 (Chloro Fluoro carbon-11) - GWP of approximately 4,660.

Additional Information

• Carbon dioxide (CO2)
• Primary greenhouse gas emitted through human activities, mainly through the burning of fossil fuels.
• Methane (CH4)
• Emitted during the production and transport of coal, oil, and natural gas as well as from livestock and other agricultural practices.
• Nitrous oxide (N2O)
• Emitted from agricultural and industrial activities, as well as during combustion of fossil fuels and solid waste.
• CFC-11 (Chloro Fluoro carbon-11)
• Primarily used as a refrigerant and also as a propellant in aerosol sprays, but its use has been largely phased out due to its role in ozone depletion.

The correct answer is - AAA; Ist Figure

Key Points

• Figure
• The figure of a syllogism is determined by the position of the middle term in the premises.
• In the 1st figure, the middle term is the subject of the major premise and the predicate of the minor premise.
• Given:
• Major premise: All sodium salts are water-soluble substances. (Middle term: sodium salts)
• Minor premise: All soaps are sodium salts. (Middle term: sodium salts)
• Conclusion: Therefore, all soaps are water-soluble substances.
• Mood
• The mood of a syllogism is determined by the types of categorical propositions it contains (A, E, I, O).
• Here, all three statements (major premise, minor premise, and conclusion) are universal affirmatives (A statements):
• All sodium salts are water-soluble substances. (A)
• All soaps are sodium salts. (A)
• Therefore, all soaps are water-soluble substances. (A)

Additional Information

• Syllogism
• A syllogism is a form of logical reasoning that joins two or more premises to arrive at a conclusion.
• It consists of three parts:
• Major premise: A general statement.
• Minor premise: A specific statement.
• Conclusion: Derived from the premises.
• Types of Categorical Propositions
• A - Universal Affirmative (All S are P)
• E - Universal Negative (No S are P)
• I - Particular Affirmative (Some S are P)
• O - Particular Negative (Some S are not P)
• Figures of Syllogism
• There are four figures in syllogistic logic, which are determined by the position of the middle term (M):
• 1st Figure: M is subject in the major premise and predicate in the minor premise.
• 2nd Figure: M is predicate in both premises.
• 3rd Figure: M is subject in both premises.
• 4th Figure: M is predicate in the major premise and subject in the minor premise.

The correct answer is - Code

Key Points

• Code
• A code refers to a set of rules that dictate the use of visual and linguistic signs within a particular culture.
• These rules are essential for ensuring that messages are understood correctly within the cultural context.
• Codes can include language, symbols, and other forms of representation.

Additional Information

• Media rule
• Media rules generally refer to guidelines or standards for content creation and distribution in various media forms.
• These rules may cover ethical standards, content regulations, and technical specifications.
• Text frame
• A text frame is a container in which text is placed, often used in page layout design.
• It helps in organizing content within a document, ensuring a structured layout.
• Technical norms
• Technical norms refer to standards and specifications that ensure the functionality and interoperability of technical systems.
• They are usually developed by standardization organizations and are crucial for maintaining quality and safety in technology.

The correct answer is - B and D Only

Key Points

• Great London Smog
• The smog was primarily composed of sulphur dioxide (SO₂) and particulate matters.
• These pollutants were released in large quantities due to the burning of coal.
• Sulphur dioxide is a significant byproduct of coal combustion.
• Particulate matter includes soot, smoke, and other fine particles from incomplete combustion.

Additional Information

• Sulphur Dioxide (SO₂)
• SO₂ is a colorless gas with a sharp, irritating odor.
• It can cause respiratory problems and other health issues when inhaled in large amounts.
• In the presence of fog, SO₂ can form sulphuric acid, contributing to acid rain.
• Particulate Matter (PM)
• PM consists of tiny particles and droplets in the air.
• These particles can penetrate deep into the lungs and even enter the bloodstream, causing various health problems.
• Sources of PM include vehicle emissions, industrial processes, and residential heating.
• Impact of Great London Smog
• The smog event in December 1952 caused widespread health issues and resulted in thousands of deaths.
• This disaster led to significant environmental regulations, including the Clean Air Act of 1956 in the UK.

The correct answer is - 2) A, B, D and E Only

Key Points

• pH
• Measures the acidity or alkalinity of water.
• A key chemical parameter affecting water quality.
• Hardness
• Indicates the concentration of calcium and magnesium ions.
• A chemical parameter that influences scaling in pipes and boilers.
• Dissolved Oxygen (DO)
• Measures the amount of oxygen dissolved in water.
• Critical for assessing water quality and the health of aquatic life.
• Biochemical Oxygen Demand (BOD)
• Indicates the amount of organic material in water.
• A higher BOD suggests more pollutants and lower water quality.

Additional Information

• Turbidity
• Measures the cloudiness or haziness of water.
• Caused by suspended particles and affects light penetration.
• While important, it is primarily a physical parameter rather than a chemical one.
• Water Quality Parameters
• Divided into physical, chemical, and biological parameters.
• Chemical parameters include substances like pH, hardness, DO, and BOD.

The correct answer is - 60, 60 and 60, respectively.

Key Points

• Absolute References
• The formula = $B$2 * $C$2 uses absolute references.
• This means that when the formula is copied to other cells, the cell references will not change.
• Copying the Formula
• When the formula = $B$2 * $C$2 is copied to cells E3 and E4, it will still refer to cells B2 and C2.
• Thus, the calculation 12 * 5 will be performed each time, resulting in the value 60 in cells E2, E3, and E4.

Additional Information

• Relative vs Absolute References
• Relative References: Change when a formula is copied to another cell. For example, copying =B2*C2 from E2 to E3 changes the formula to =B3*C3.
• Absolute References: Do not change when a formula is copied to another cell, denoted by the $ symbol. For example, copying =$B$2$C$2* from E2 to E3 remains =$B$2$C$2*.
• Mixed References
• A mix of relative and absolute references. For example, =B$2*C2 or =$B2*C$2.
• They allow either the row or column reference to change while keeping the other constant when copied.
• Practical Use
• Understanding how to use absolute and relative references effectively is crucial for creating dynamic and accurate Excel spreadsheets.
• This knowledge helps in scenarios like financial modeling, data analysis, and automated reporting.

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

Key Points

• Polymorphic Virus
• A polymorphic virus changes its signature with each copy made during replication.
• This makes it difficult for antivirus software to detect it using signature-based detection methods.
• Metamorphic Virus
• A metamorphic virus completely rewrites itself each time it is replicated, sometimes changing its behavior.
• This makes it even harder to detect than a polymorphic virus.
• Trojan Horse
• A Trojan Horse is a seemingly useful program that contains hidden harmful program code.
• Users are tricked into executing the malicious code by believing it is a legitimate software.
• Worm
• A worm is a malware that spreads copies of itself through a network without user interaction.
• Worms often exploit vulnerabilities in network protocols to propagate.

Additional Information

• Malware
• Malware is software designed to disrupt, damage, or gain unauthorized access to computer systems.
• Common types of malware include viruses, worms, Trojans, ransomware, and spyware.
• Antivirus Software
• Antivirus software is designed to detect, prevent, and remove malware.
• It uses various detection methods such as signature-based detection, heuristic analysis, and behavior monitoring.
• Network Security
• Network security involves measures to protect data during its transmission across networks.
• Techniques include firewalls, intrusion detection systems, and secure communication protocols.

The correct answer is - B and D Only

Key Points

• Snowball sampling and Key informant sampling are effective for studying hidden populations.
• Snowball sampling
• Involves initial subjects recruiting future subjects from among their acquaintances.
• Useful when the target population is hard to locate or identify, such as drug users or undocumented immigrants.
• Key informant sampling
• Utilizes individuals who have extensive knowledge about the population of interest.
• Effective for gaining insights and accessing hard-to-reach groups through trusted intermediaries.

Additional Information

• Simple random sampling
• Each member of the population has an equal chance of being selected.
• Not suitable for hidden populations as it requires a complete list of the population.
• Stratified random sampling
• Divides the population into strata and randomly samples from each stratum.
• Requires knowledge of the population structure, which may not be available for hidden populations.

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

Key Points

• Population Standard Deviation Calculation
• The formula for the population standard deviation (σ) is σ = √[ (1/N) ∑(x_i²) - μ²].
• Given values are:
• A: μ = 7, (1/N) ∑x_i² = 85
• B: μ = 3, (1/N) ∑x_i² = 58
• C: μ = 7, (1/N) ∑x_i² = 113
• D: μ = 6, (1/N) ∑x_i² = 117
• Matching Process
• For A: σ = √[85 - 7²] = √[85 - 49] = √36 = 6
• For B: σ = √[58 - 3²] = √[58 - 9] = √49 = 7
• For C: σ = √[113 - 7²] = √[113 - 49] = √64 = 8
• For D: σ = √[117 - 6²] = √[117 - 36] = √81 = 9

Additional Information

• Population Mean (μ)
• The population mean is the average of all individual data points in a population.
• It is calculated using the formula μ = (1/N) ∑x_i.
• Population Variance and Standard Deviation
• The population variance is the average of the squared differences from the mean.
• It is calculated using the formula σ² = (1/N) ∑(x_i - μ)².
• The population standard deviation is the square root of the population variance.

Given:

A woman walks 100 metres towards north.

Then she turns to her left and walks 50 metres. 

Again turns left and walks 120 metres.

Finally she turns to her right at an angle of 45 degrees and starts walking.

Thus, 'South-West' direction the woman is walking now.

Hence, "Option 2" is the correct answer.

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

Key Points

• Elements of Observational Learning
• Attention: The first step involves focusing on the behavior being modeled.
• Retention: Involves remembering the observed behavior.
• Production: The ability to reproduce the observed behavior.
• Motivation: The need to want to replicate the behavior.

Additional Information

• Observational Learning Theory
• Proposed by Albert Bandura, who emphasized the importance of social influences in learning.
• Also known as Social Learning Theory.
• Involves learning by observing, imitating, and modeling the behaviors of others.
• Applications of Observational Learning
• Widely used in educational settings to teach new skills and behaviors.
• Employed in behavior therapy to help modify problematic behaviors.
• Critical in understanding the development of social behaviors and norms.

The correct answer is Option 3.

 

Key Points

• The passage states that Ayurveda points out that the balance of the inner environment can be maintained only by establishing harmony with the external environment.

Therefore, the correct answer is Option 3.

 

Correct Sentence: "According to Ayurveda, maintaining the balance of the internal environment of the body is closely related to the external environment."

 

 Additional Information

• Option 1: This option is incorrect because the passage explicitly mentions a connection with the external environment.
• Option 2: This option is incorrect because the passage indicates the relationship is significant, not negligible.
• Option 4: This option is incorrect because the passage implies a consistent dependency, not just sometimes.

The correct answer is Option 1.

 

Key Points

• The passage states that Ayurveda has been at the forefront of advocating an approach to personalized medicine from historical times.
• Ayurveda tailors medical intervention to suit individual needs, acknowledging the unique mental and physical constitution of each person.

Therefore, the correct answer is Option 1.

 

Correct Sentence: "Ayurveda advocates a personalized treatment."

 

 Additional Information

• Option 2: This option is incorrect because Ayurveda does not advocate a similar treatment for all individuals.
• Option 3: This option is incorrect because Ayurveda not only focuses on prevention but also on personalized treatment plans.
• Option 4: This option is incorrect because Ayurveda is distinct from allopathic treatment.

The correct answer is Option 3.

 

Key Points

• The passage primarily focuses on Ayurveda, its definition of health, the personalized approach to medicine, and the importance of balancing the internal and external environments.
• Ayurveda is mentioned repeatedly and is the central theme of the passage.

Therefore, the correct answer is Option 3.

 

Correct Sentence: "A suitable title for the passage would be 'Ayurveda'."

 

 Additional Information

• Option 1: This option is incorrect because while "Dynamic Balance" is an important concept in the passage, it does not encompass the full scope of the content.
• Option 2: This option is incorrect because the passage is not solely focused on disease treatment, but rather on the broader principles and practices of Ayurveda.
• Option 4: This option is incorrect because while the balance of internal and external environments is discussed, it is not the overarching theme of the passage.

The correct answer is Option 3.

 

Key Points

• The passage states that Ayurveda developed into an ecology-conscious system of healthcare.
• Ayurveda emphasizes the need to harmonize the internal environment with the external environment and advocates using local plants and adapting lifestyles to geographical regions and seasons.

Therefore, the correct answer is Option 3.

 

Correct Sentence: "Ayurvedic system of health is ecology conscious."

 

 Additional Information

• Option 1: This option is incorrect because the passage highlights that Ayurveda cares about the environment.
• Option 2: This option is incorrect because Ayurveda does not advocate destroying the environment.
• Option 4: This option is incorrect because Ayurveda does not pollute the environment.

The correct answer is Option 3.

 

Key Points

• The passage mentions that each individual has to carve a lifestyle that considers the geographical region as well as the changing seasons.
• Ayurveda emphasizes the importance of aligning one's lifestyle with the environment and regional factors.

Therefore, the correct answer is Option 3.

 

Correct Sentence: "According to Ayurveda the lifestyle of each individual needs to be carved out considering their particular region and the changing seasons."

 

 Additional Information

• Option 1: This option is incorrect because it does not emphasize the environmental alignment mentioned in the passage.
• Option 2: This option is incorrect because sticking to a diet of fruits does not encompass the broader lifestyle considerations emphasized by Ayurveda.
• Option 4: This option is incorrect because it focuses on cost rather than the geographical and environmental considerations highlighted in the passage.