Combined Defence Services (CDS) · Topic Collection

English Comprehension PYQs

Reading comprehension, vocabulary, synonyms and antonyms, idiom usage, error spotting, sentence improvement, and cloze tests.

4560 Total Questions38 Official PapersYears: 2016–2025Search in English Comprehension
Showing questions 521–540 of 4560Page 27 of 100
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 521

Combined Defence Services (CDS) 2024• English• English

Qubit refers to a two-valued quantity used in 

  1. AOption (a)

    classical computers

  2. BOption (b)

    classical cryptography

  3. COption (c)

    quantum computers

  4. DOption (d)

    lasers

View answer & explanation

Correct answer

Answer: (c)C.

quantum computers

Why this answer is correct

The correct answer is quantum computers.

Key Points

  • A qubit, or quantum bit, is the fundamental unit of quantum information in quantum computing.
  • Unlike a classic binary bit, which can exist in one of two states (0 or 1), a qubit can exist simultaneously in multiple states due to quantum superposition.
  • This property allows quantum computers to process a vast amount of information at once, making them potentially much more powerful than classical computers for certain tasks.
  • Quantum entanglement, another quantum phenomenon, allows qubits that are entangled to be correlated with each other regardless of the distance separating them. This is integral for quantum computing and quantum cryptography.
  • Current research and development in quantum computing are focused on harnessing these properties for applications in cryptography, modeling, and solving complex computational problems that are infeasible for classical computers.

 Additional Information

  • Classical computers
  • Classical computers use the traditional binary data system (bits), which can be either a 0 or a 1.
  • They are powerful for a wide range of tasks, including general-purpose computing and running of software applications, but are limited by binary processing for specific complex computations.
  • Classical cryptography
  • Relies on traditional mathematical computations for encryption and security.
  • While quantum computers pose a threat to classical cryptography due to their potential to break existing encryption methods, classical forms are still widely used and effective for most current security needs.
  • Lasers
  • Lasers emit light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
  • While they have applications in various areas of science and technology, including in creating quantum states for research, they do not inherently involve qubits or quantum computing.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 522

Combined Defence Services (CDS) 2024• English• English

Which of the following statements regarding continent of Antarctica is/are correct?

  1. It has the highest average elevation as compared to all other continents.
  2. Mount Vinson is the highest peak of this continent.

Select the correct answer using the code given below.

  1. AOption (a)

    1 only

  2. BOption (b)

    2 only

  3. COption (c)

    Both 1 and 2

  4. DOption (d)

    Neither 1 nor 2

View answer & explanation

Correct answer

Answer: (c)C.

Both 1 and 2

Why this answer is correct

The correct answer is Both 1 and 2.

Key PointsThe Continent of Antarctica

  • Antarctica is renowned for having the highest average elevation of all the continents. This is primarily due to the vast ice sheets that cover the majority of the continent. Hence, statement 1 is correct.
    • The average elevation of Antarctica is about 2,500 meters (8,200 feet), making it the highest continent.
  • Mount Vinson is recognized as the highest peak in Antarctica, standing at an elevation of 4,892 meters (16,050 feet) above sea level.
  • It is located in the Ellsworth Mountains, which are situated in the interior part of the Western Hemisphere portion of the continent. Hence, statement 2 is correct.

Additional Information

  • Antarctica is the fifth-largest continent and is nearly twice the size of Australia. It is the southernmost continent and is situated around the South Pole.
  • It is covered by an ice sheet that contains approximately 90% of the world's fresh water. The thickness of the ice can average 1.9 kilometers (1.2 miles).
  • This vast ice sheet plays a critical role in the earth's climate, reflecting a significant amount of the sun's energy back into space.
  • The continent is surrounded by the Southern Ocean and does not have a permanent population. It hosts researchers and scientists from around the world who study its environment and ecosystems.
  • Antarctica is governed by the Antarctic Treaty System, which establishes the region as a scientific preserve and bans military activity on the continent.
  • The treaty was signed in 1959 and has been ratified by numerous countries.
  • The Antarctic climate is extremely cold, making it the coldest continent. The lowest temperature ever recorded on Earth, -89.2°C (-128.6°F), was at Russia's Vostok Station in Antarctica.
  • Global warming and climate change pose significant threats to Antarctica's ice sheets, which could have global implications for sea-level rise and climate patterns.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 523

Combined Defence Services (CDS) 2024• English• English

Which of the following statements with regard to the Report of Tendulkar Committee (2009) on poverty estimates is/are correct?

  1. The Committee had used an all-India urban poverty line basket as a reference to derive both rural and urban poverty levels.
  2. The Committee had anchored the poverty line to the official food calorie norms.

Select the correct answer using the code given below.

  1. AOption (a)

    1 only

  2. BOption (b)

     2 only

  3. COption (c)

    Both 1 and 2

  4. DOption (d)

    Neither 1 nor 2

View answer & explanation

Correct answer

Answer: (a)A.

1 only

Why this answer is correct

The correct answer is 1 only.

Key PointsThe Report of Tendulkar Committee on Poverty Estimates

  • The Tendulkar Committee was constituted by the Planning Commission of India in 2005, with the objective of reviewing the methodology for poverty estimation and reporting in India.
  • The Committee used an all-India urban poverty line basket as a reference to derive both rural and urban poverty levels. This approach was adopted to account for the differences in the cost of living and to ensure a uniform poverty threshold across urban and rural areas.
  • Hence, statement 1 is correct.
  • Contrary to previous methods, the Tendulkar Committee moved away from anchoring the poverty line strictly to calorie intake. Instead, it adopted a broader consumption-based approach. This included spending on food, education, health, and clothing among others, thereby providing a more comprehensive measure of poverty.
  • Hence, statement 2 is incorrect.

Additional Information

  • The Tendulkar Committee's methodology marked a significant shift in the way poverty was measured in India, making the poverty estimates more comprehensive by including a wider range of consumption items.
  • The Committee's approach was also significant for focusing on poverty alleviation strategies that went beyond mere calorie consumption to include factors affecting living standards such as health, education, and sanitation.
  • The Planning Commission, now replaced by the NITI Aayog, played a pivotal role in formulating India's five-year plans and in efforts aimed at reducing poverty through various schemes and measures.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 524

Combined Defence Services (CDS) 2024• English• English

Who among the following filed the Writ Petition that led to the famous verdict of the Supreme Court of India recognising the Right to Privacy as a Fundamental Right? 

  1. AOption (a)

    Justice P. N. Bhagwati

  2. BOption (b)

    Justice Rohinton Fali Nariman

  3. COption (c)

    Justice K. S. Puttaswamy

  4. DOption (d)

    Justice Anil R. Dave

View answer & explanation

Correct answer

Answer: (c)C.

Justice K. S. Puttaswamy

Why this answer is correct

The correct answer is Justice K. S. Puttaswamy.

Key PointsRight to Privacy as a Fundamental Right

  • The Right to Privacy was recognized as a Fundamental Right under the Indian Constitution by the Supreme Court in a landmark judgement in August 2017.
  • This historic verdict was the outcome of a Writ Petition (Civil) No 494 of 2012 filed by Justice K. S. Puttaswamy (Retd.) and another versus Union of India and others.
  • The judgement was passed by a nine-judge bench of the Supreme Court, which unanimously held that the Right to Privacy is protected as an intrinsic part of the Right to Life and Personal Liberty under Article 21 and as a part of the freedoms guaranteed by Part III of the Constitution.
  • The court overruled its earlier decisions in the M.P. Sharma and Kharak Singh cases, where it was held that privacy is not protected under the Indian Constitution.

Hence, the statement that Justice K. S. Puttaswamy filed the Writ Petition leading to the recognition of the Right to Privacy as a Fundamental Right is correct.

Additional Information

  • The Right to Privacy is considered a fundamental aspect of human dignity and autonomy, which is essential for the exercise of other rights and freedoms.
  • The judgment in Justice K. S. Puttaswamy (Retd.) vs Union Of India case has far-reaching implications on various aspects of law and governance, including data protection, surveillance, personal autonomy, and decision-making.
  • This judgement is a testament to the evolving nature of constitutional law in India, reflecting the changing societal values and technological landscapes.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 525

Combined Defence Services (CDS) 2024• English• English

Photo 51 refers to an image of 

  1. AOption (a)

    a crater on the Moon

  2. BOption (b)

    DNA molecules

  3. COption (c)

    the virus responsible for COVID-19

  4. DOption (d)

    the virus responsible for common cold

View answer & explanation

Correct answer

Answer: (b)B.

DNA molecules

Why this answer is correct

The correct answer is DNA molecules.

Key PointsPhoto 51

  • Photo 51 is an X-ray diffraction image of crystallized DNA.
  • It was taken by Rosalind Franklin and Raymond Gosling at King's College London in 1952.
  • The image played a crucial role in the discovery of the DNA double helix structure by James Watson and Francis Crick.
  • The unique pattern in Photo 51 indicated that DNA was a double helix.
  • Franklin's contributions were initially not fully acknowledged, but her work has since been recognized as pivotal in understanding DNA's structure and function.

Additional Information

  • James Watson, Francis Crick, and Maurice Wilkins were awarded the Nobel Prize in Physiology or Medicine in 1962 for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material.
  • Rosalind Franklin had passed away by the time the Nobel Prize was awarded, and the Nobel Prize is not awarded posthumously.
  • The discovery of DNA's structure opened the doors to molecular biology, allowing scientists to understand how DNA functions as the genetic material.
  • DNA's double helix structure is essential for its replication and function in genetic inheritance.
  • The X-ray crystallography technique used by Franklin has since become a fundamental tool in molecular biology to determine the 3D structures of biological molecules.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 526

Combined Defence Services (CDS) 2024• English• English

Which one of the following biosphere reserves is spread over three States in India? 

  1. AOption (a)

    Nilgiri

  2. BOption (b)

    Achanakmar-Amarkantak

  3. COption (c)

    Seshachalam

  4. DOption (d)

    Agasthyamalai

View answer & explanation

Correct answer

Answer: (a)A.

Nilgiri

Why this answer is correct

The correct answer is Nilgiri.

Key PointsNilgiri Biosphere Reserve

  • The Nilgiri Biosphere Reserve is a unique and fascinating region in the Western Ghats and Nilgiri Hills in South India. It is renowned for its ecological significance and biodiversity conservation.
  • It spans across three states in India: Tamil Nadu, Karnataka, and Kerala, making it the first and most prominent biosphere reserve in India to cover multiple states.
  • The reserve encompasses a protected area of over 5,520 square kilometers, providing habitat for numerous species of flora and fauna, including several endangered and endemic species.
  • It was declared as a UNESCO World Biosphere Reserve in 2000, highlighting its global importance for conservation and sustainable development.
  • The region is characterized by varied ecosystems, ranging from tropical moist forests to montane grasslands, which support a rich diversity of life forms.
  • It plays a crucial role in the conservation of several key species like the Tiger, Asian Elephant, and the Nilgiri Tahr.
  • Cultural significance is also paramount in the Nilgiri Biosphere Reserve, with indigenous communities such as the Toda, Kurumba, and others, maintaining their traditional lifestyles that are closely linked with the natural environment.

Hence, the statement regarding Nilgiri Biosphere Reserve spreading over three States in India is correct.

Additional Information

  • Biosphere Reserves are areas of terrestrial and coastal ecosystems promoting solutions to reconcile the conservation of biodiversity with its sustainable use. They are internationally recognized, nominated by national governments and remain under the sovereign jurisdiction of the states where they are located.
  • UNESCO’s Man and the Biosphere (MAB) Programme works with international governmental and non-governmental organizations, as well as local communities, to develop Biosphere Reserves as sites for testing interdisciplinary approaches to understanding and managing changes and interactions between social and ecological systems, including conflict prevention and management of biodiversity.
  • The Western Ghats, where the Nilgiri Biosphere Reserve is located, is recognized as one of the world’s eight ‘hottest hotspots’ of biological diversity.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 527

Combined Defence Services (CDS) 2024• English• English

Which of the following components of Central Government taxes on petroleum products is/are not shareable with the States?

  1. Basic Excise Duty
  2. Additional Excise Duty
  3. Special Additional Excise Duty

Select the correct answer using the code given below.

  1. AOption (a)

    1 and 2 only

  2. BOption (b)

    1, 2 and 3

  3. COption (c)

    3 only

  4. DOption (d)

    2 and 3 only

View answer & explanation

Correct answer

Answer: (d)D.

2 and 3 only

Why this answer is correct

The correct answer is 2 and 3 only.**

Key PointsCentral Government Taxes on Petroleum Products

  • Basic Excise Duty: This is shareable with the states as part of the divisible pool of central taxes.
  • Additional Excise Duty: This is not shareable with the states.
  • Special Additional Excise Duty: This is also not shareable with the states.
  • Therefore, components 2 (Additional Excise Duty) and 3 (Special Additional Excise Duty) are not shareable with the states.

Additional Information

  • The distribution of revenue from the taxation of petroleum products between the central and state governments is a critical aspect of India's fiscal federalism.
  • Fiscal Federalism in India aims to ensure both central and state governments have adequate resources to fulfill their responsibilities. This system is governed by the recommendations of the Finance Commission and the Constitution of India.
  • The Finance Commission plays a pivotal role in defining the financial relations between the centre and the states, including recommendations on the distribution of tax revenues.
  • Petroleum products are among the largest sources of revenue for both the central and state governments. The way these taxes are structured and shared impacts the financial health of both levels of government.
  • The Goods and Services Tax (GST) does not currently apply to petroleum products, making excise duties and Value Added Tax (VAT) the primary taxes on these products.
  • The central government's decision on which components of the excise duty are shared with or withheld from the states can significantly influence state finances and central-state fiscal relations.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 528

Combined Defence Services (CDS) 2024• English• English

Through the Forty Second Amendment to the Constitution of India, which of the following was/were inserted into its Preamble?

  1. Liberty of thought, expression and belief' was substituted by Liberty of thought, expression, belief, faith and worship'.
  2. The expression Unity of the Nation' was substituted by Unity and Integrity of the Nation'.

Select the correct answer using the code given below.

  1. AOption (a)

    1 only

  2. BOption (b)

    2 only

  3. COption (c)

    Both 1 and 2

  4. DOption (d)

    Neither 1 nor 2

View answer & explanation

Correct answer

Answer: (b)B.

2 only

Why this answer is correct

The correct answer is 2 only.

Key Points

  • The Forty Second Amendment to the Constitution of India, enacted in 1976, is one of the most comprehensive amendments, often referred to as the "Mini Constitution" due to the extensive changes it made to the Constitution.
  • One of the key features of this amendment was the alteration to the Preamble of the Constitution. However, the amendment did not substitute 'Liberty of thought, expression, belief' with 'Liberty of thought, expression, belief, faith and worship'. This part of the Preamble remained unchanged.
  • As a result, statement 1 is incorrect.
  • The amendment did indeed substitute 'Unity of the Nation' with 'Unity and Integrity of the Nation' in the Preamble. This change was aimed at emphasizing the importance of maintaining not just unity but also the integrity of the nation, reflecting a commitment to national cohesion and the territorial integrity of India.
  • Hence, statement 2 is correct.

Additional Information

  • The 42nd Amendment Act of 1976 is also known for its role in strengthening the central government, enhancing the powers of the Prime Minister, and making the directive principles more prominent than the fundamental rights.
  • It also added three new words to the Preamble: Socialist, Secular, and Integrity, thereby expanding the objectives of the Indian Republic.
  • The amendment affected almost all parts of the Constitution, including the Preamble, the fundamental rights, the directive principles, the executive, the judiciary, and the legislative relations between the Union and the states.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 529

Combined Defence Services (CDS) 2024• English• English

The rest mass of Higgs boson estimated to be close to 

  1. AOption (a)

    0.5 MeV

  2. BOption (b)

    900 MeV

  3. COption (c)

    100 GeV

  4. DOption (d)

    1000 GeV

View answer & explanation

Correct answer

Answer: (c)C.

100 GeV

Why this answer is correct

The correct answer is 100 GeV.

Key PointsUnderstanding the Higgs Boson's Mass

  • The Higgs boson is a fundamental particle associated with the Higgs field, which is responsible for giving mass to other particles.
  • The discovery of the Higgs boson at the Large Hadron Collider (LHC) by the ATLAS and CMS experiments in 2012 confirmed the existence of the Higgs field.
  • The rest mass of the Higgs boson is estimated to be around 125 GeV (Giga electron Volts), which is equivalent to approximately 100 GeV when considering the range within which this value is expected to fall.
  • This mass is significantly higher than that of other subatomic particles, highlighting the unique nature of the Higgs boson.

Additional Information

  • The Higgs field is an energy field that is thought to exist throughout the universe. The interaction of particles with this field is what gives them mass.
  • The concept of the Higgs field and Higgs boson is a central part of the Standard Model of particle physics, which is a theory that describes the fundamental particles and forces that govern the universe.
  • The Large Hadron Collider (LHC) is the world's largest and most powerful particle collider, located at CERN (European Organization for Nuclear Research). It was instrumental in the discovery of the Higgs boson.
  • The discovery of the Higgs boson was a monumental achievement in physics and earned the 2013 Nobel Prize in Physics for François Englert and Peter Higgs, who had theorized the existence of the Higgs boson in the 1960s.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 530

Combined Defence Services (CDS) 2024• English• English

Which one of the following pairs is not correctly matched? 

  1. AOption (a)

    Ramnagar Wildlife Sanctuary : Uttarakhand

  2. BOption (b)

    Chakrashila Wildlife Sanctuary : Assam

  3. COption (c)

    Nahar Wildlife Sanctuary : Haryana

  4. DOption (d)

    Kane Wildlife Sanctuary : Arunachal Pradesh

View answer & explanation

Correct answer

Answer: (a)A.

Ramnagar Wildlife Sanctuary : Uttarakhand

Why this answer is correct

The correct answer is Option 1.

Key PointsAnalysis of the Given Statements

  • Chakrashila Wildlife Sanctuary: Assam - This sanctuary is indeed located in Assam and is well-known for its population of the golden langur, a species endemic to this region.
  • It encompasses a variety of habitats and is a biodiversity hotspot. Hence, this statement is correct.
  • Nahar Wildlife Sanctuary: Haryana - This sanctuary is correctly matched to Haryana. It is a protected area known for its efforts in conserving local flora and fauna, including several species of birds and mammals.
  • It plays a crucial role in the ecological balance of the region. Hence, this statement is correct.
  • Kane Wildlife Sanctuary: Arunachal Pradesh - Located in Arunachal Pradesh, this sanctuary is a crucial part of the state’s rich biodiversity. It is home to a wide range of species, including some that are rare and endangered.
  • The sanctuary's diverse ecosystems provide vital habitats for wildlife. Hence, this statement is correct.
  • Ramnagar Wildlife Sanctuary: Uttarakhand - The incorrect match in the list. The confusion might arise because there is a place called Ramnagar in Uttarakhand, known for the Corbett National Park's proximity. However, there is no officially recognized wildlife sanctuary by this name in Uttarakhand, making this pair incorrectly matched.
  • Hence, this statement is incorrect.

Additional Information

  • Wildlife Sanctuaries in India are protected areas designated for the conservation of animals and their habitats. They play a crucial role in biodiversity conservation, providing sanctuary to species that are in danger of extinction.
  • Biodiversity Hotspots - These are regions with significant levels of biodiversity that are under threat from humans. Conservation efforts in such areas are crucial for preserving global biodiversity.
  • Endemic Species - Species that are found in a particular area and nowhere else in the world. The golden langur in Chakrashila is an example of such species, highlighting the importance of these sanctuaries in conservation efforts.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 531

Combined Defence Services (CDS) 2024• English• English

Level of per capita GDP depends upon which of the following?

  1. Proportion of population in the working age
  2. Work participation rate
  3. Per worker productivity

Select the correct answer using the code given below.

  1. AOption (a)

    3 only

  2. BOption (b)

    1 and 3 only

  3. COption (c)

    1 and 2 only

  4. DOption (d)

    1, 2 and 3

View answer & explanation

Correct answer

Answer: (d)D.

1, 2 and 3

Why this answer is correct

The correct answer is 1, 2 and 3.

Key PointsFactors Affecting Per Capita GDP

  • The proportion of population in the working age significantly affects a country's per capita GDP. A higher proportion of working-age population can lead to a higher potential labor force, which, if employed, enhances the nation's productivity and its per capita GDP. Hence, statement 1 is correct.
  • Work participation rate refers to the number of individuals who are actively employed or seeking employment. A higher work participation rate indicates a more significant portion of the population contributing to the economy, thus potentially increasing the per capita GDP. Hence, statement 2 is correct.
  • Per worker productivity is a crucial determinant of per capita GDP. It measures the average output per employed person. Higher productivity means more goods and services are produced per worker, leading to a higher overall economic output and, consequently, a higher per capita GDP. Hence, statement 3 is correct.

Additional Information

  • Economic Development: Understanding these factors is crucial for policy-makers aiming to foster economic development. By focusing on increasing the working-age population through immigration or policies that support higher birth rates, improving work participation rates through education and training, and enhancing per worker productivity through technology and innovation, a country can significantly improve its per capita GDP.
  • Demographic Dividend: The concept of demographic dividend refers to the economic growth potential that can result from shifts in a population's age structure, mainly when the share of the working-age population (15 to 64) is larger than the non-working-age share of the population (14 and younger, and 65 and older). Countries aiming to capitalize on the demographic dividend must ensure that policies are in place to provide adequate employment and productivity enhancement opportunities to their working-age population.
  • Technological Advancement: Technology plays a pivotal role in enhancing per worker productivity. Investments in research and development, innovation, and education are essential for improving productivity. Countries leading in technology adoption and innovation tend to have higher per capita GDP figures.
  • Labour Market Policies: Effective labour market policies, including those that encourage participation of women and older workers, can significantly impact the work participation rate and, subsequently, the per capita GDP. Policies aimed at removing barriers to employment, providing retraining programs, and ensuring workplace flexibility are crucial in this regard.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 532

Combined Defence Services (CDS) 2024• English• English

As per the State List under the Seventh Schedule of the Constitution of India, the States have jurisdiction over agricultural land in connection with which of the following subjects?

  1. Taxes on agricultural income
  2. Duties in respect of succession of agricultural land
  3. Estate duty in respect of agricultural land

Select the correct answer using the code given below.

  1. AOption (a)

    1 and 2 only

  2. BOption (b)

    2 and 3 only

  3. COption (c)

    1 and 3 only

  4. DOption (d)

    1, 2 and 3

View answer & explanation

Correct answer

Answer: (d)D.

1, 2 and 3

Why this answer is correct

The correct answer is  1, 2 and 3.

Key PointsSeventh Schedule of the Constitution of India

  • The Seventh Schedule of the Constitution of India delineates the division of powers between the Union government and the States through three lists: the Union List, the State List, and the Concurrent List.
  • Taxes on agricultural income fall under the State List, giving states the exclusive power to levy taxes on agricultural income. This is designed to allow states to manage their agricultural policies and taxation in a way that suits their specific needs and conditions.
  • As per the constitutional arrangement, the central government cannot levy taxes on agricultural income, ensuring that this vital area remains under the direct control of state governments. Hence, statement 1 is correct.
  • Duties in respect of the succession of agricultural land are also under the jurisdiction of the states. This means states have the authority to regulate and impose duties on the transfer of agricultural land upon the death of the owner, allowing them to manage and control agricultural land succession within their territory.
  • This autonomy supports the management of agricultural lands in accordance with local requirements and traditions. Hence, statement 2 is correct.
  • Estate duty in respect of agricultural land
  • Item 48 of the State List empowers states to levy an estate duty on agricultural land. Estate duty is a tax imposed on the total value of a deceased person’s property, including agricultural land before it is transferred to heirs. The authority to impose estate duties on agricultural land specifically rests with the state governments.
  • Example: Upon the death of a landowner, the state may impose an estate duty before transferring ownership of the agricultural land to the inheritors.
  • Hence, statement 3 is correct.

Additional Information

  • The Constitution of India was designed to accommodate the vast diversity of the country by allowing different regions to have control over certain areas crucial to their economic and social structures, such as agriculture.
  • Agricultural income in India is defined under the Income Tax Act, of 1961, and is exempt from taxation by the central government, reflecting the importance of agriculture to the Indian economy and the livelihood of its people.
  • The state's power to levy taxes and duties on agricultural income and succession of agricultural land is crucial for its autonomy in agricultural policy-making and land management, allowing for region-specific strategies that can better address local needs and challenges.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 533

Combined Defence Services (CDS) 2024• English• English

Which one of the following correctly describes the principle of the working of an atomic clock? 

  1. AOption (a)

    Vibration of a small quartz crystal

  2. BOption (b)

    Simple harmonic motion of atoms inside a crystal

  3. COption (c)

    Resonant frequency in cesium (or rubidium) atom

  4. DOption (d)

    Excitation and de-excitation of hydrogen atoms

View answer & explanation

Correct answer

Answer: (c)C.

Resonant frequency in cesium (or rubidium) atom

Why this answer is correct

The correct answer is Resonant frequency in cesium (or rubidium) atom.

Key PointsPrinciple of Atomic Clocks

  • Atomic clocks operate on the principle of measuring the resonant frequency of atoms, typically cesium-133 or rubidium-87.
  • The cesium atomic clock, for instance, uses the exact frequency of the microwave spectral line emitted by cesium atoms to keep time with extreme accuracy.
  • These clocks do not rely on the vibration of a quartz crystal or any simple harmonic motion but on the quantum-mechanical properties of the atoms.
  • Atomic clocks are able to keep time accurately to within a few billionths of a second per day, making them the most accurate timekeeping devices known.
  • The process involves cooling cesium gas and placing it in a microwave cavity, where the atoms absorb and emit microwaves at a precise frequency. The clock's mechanism measures these vibrations to keep track of time.

Hence, statement 3 is correct.

Additional Information

  • The concept of quantum mechanics plays a crucial role in the operation of atomic clocks, exploiting the precise energy levels of atoms.
  • Cesium atomic clocks are so precise that they are used as the standard for International System of Units (SI) definition of the second.
  • Atomic clocks are used in various applications including global positioning systems (GPS), internet data transfer synchronization, and in the study of relativity.
  • The development of optical lattice clocks with strontium atoms is underway, which promises even greater accuracy, potentially reaching accuracy levels of 1 second in over 14 billion years.
  • Rubidium atomic clocks, while slightly less accurate than cesium ones, are smaller, use less power, and are more cost-effective, making them suitable for many applications including telecommunications and satellite navigation.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 534

Combined Defence Services (CDS) 2024• English• English

Which of the following statements regarding coconut production in Lakshadweep is/are correct?

  1. Productivity per hectare is highest in India.
  2. Oil content in nuts is the highest in the world.

Select the correct answer using the code given below.

  1. AOption (a)

    1 only

  2. BOption (b)

    2 only

  3. COption (c)

    Both 1 and 2

  4. DOption (d)

    Neither 1 nor 2

View answer & explanation

Correct answer

Answer: (a)A.

1 only

Why this answer is correct

The correct answer is 1 only.

Key Points

  • Lakshadweep is known for its coconut production, which plays a crucial role in the livelihood of the local population.
  • The productivity of coconut per hectare in Lakshadweep is indeed among the highest in India. This is attributed to the island's favourable climate, soil conditions, and traditional farming methods that are well-suited for coconut cultivation.
  • Hence, statement 1 is correct.
  • The oil content of nuts varies from 0.8% for chestnuts to 67% for Brazil nuts. The fatty acid composition of nut oils is very diverse. The highest amount of saturated fats belongs to Brazil nut oil (around 23%). Hence, the Oil content in nuts in the Lakshadweep is not the highest in the world.
  • Hence, statement 2 is incorrect.

Additional Information

  • Lakshadweep's economy is predominantly based on agriculture, with coconut being the main crop. The islands also engage in fishery, which is another significant economic activity.
  • The geographical isolation of Lakshadweep has helped in preserving its biodiversity. The unique ecosystem of these islands includes coral reefs, lagoons, and a variety of marine species.
  • Coconut cultivation practices in Lakshadweep have been sustainable over the years, incorporating traditional knowledge with minimal environmental impact. This sustainability contributes to the high productivity of the crop in the region.
  • Coconut-based products from Lakshadweep, such as copra (dried coconut kernel), coconut oil, and coconut powder, are important for both local consumption and export. These products contribute significantly to the islands' economy.
  • The Government of India and various agencies have implemented development programs in Lakshadweep to enhance agricultural productivity, promote sustainable practices, and improve the livelihood of the local community.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 535

Combined Defence Services (CDS) 2024• English• English

Which of the following are included in M1 definition of money for the Indian

economy?

  1. Reserves
  2. Currency
  3. Time deposits
  4. Demand deposits

Select the correct answer using the code given below.

  1. AOption (a)

    1 and 3 only

  2. BOption (b)

    2 and 3

  3. COption (c)

    2 and 4

  4. DOption (d)

    1, 3 and 4

View answer & explanation

Correct answer

Answer: (c)C.

2 and 4

Why this answer is correct

The correct answer is 2 and 4.

Key PointsM1 Definition of Money for the Indian Economy

  • M1, also known as narrow money, includes assets that are highly liquid and can be quickly converted into cash.
  • Currency includes all paper money and coins in circulation. It is the most liquid form of money and can be used directly for transactions. Hence, statement 2 is correct.
  • Demand deposits are bank account balances that can be withdrawn on demand without any prior notice. They include current accounts and savings accounts that offer no or low interest but high liquidity. Hence, statement 4 is correct.
  • Reserves, such as those held by banks at the central bank, are not directly used for transactions by the public and hence are not included in M1. Hence, statement 1 is incorrect.
  • Time deposits, like fixed deposits, cannot be withdrawn before a certain date without penalty and thus, are not considered part of M1 due to their low liquidity. Hence, statement 3 is incorrect.

Additional Information

  • The Indian economy uses various measures of the money supply, including M1, M2, M3, and M4. Each measure includes different components based on their liquidity.
  • M2 includes M1 plus savings deposits with post office savings banks.
  • M3, also known as broad money, includes M1 plus time deposits with the banking system and is a key indicator of the money supply in the economy.
  • M4 includes M3 plus all deposits with the post office savings banks (excluding National Savings Certificates).
  • Understanding these concepts is crucial for analyzing economic policies, inflation, and the overall health of the economy. The Reserve Bank of India (RBI) plays a pivotal role in regulating the money supply to ensure economic stability.
  • Liquidity refers to how quickly and easily an asset can be converted into cash without significantly affecting its value. Highly liquid assets are essential for the smooth functioning of the financial markets and for enabling transactions.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 536

Combined Defence Services (CDS) 2024• English• English

The 7th  edition of the Indian Ocean Conference was held at

  1. AOption (a)

    Dhaka

  2. BOption (b)

    New Delhi

  3. COption (c)

    Malé

  4. DOption (d)

    Perth

View answer & explanation

Correct answer

Answer: (d)D.

Perth

Why this answer is correct

The correct answer is Perth.

Key Points 

  • 7th Edition of the Indian Ocean Conference
  • The 7th edition of the Indian Ocean Conference was held in Perth, Australia on February 9-10, 2024.
  • The conference was hosted by India Foundation in association with the Ministry of External Affairs of India, the Department of Foreign Affairs and Trade, Government of Australia, Perth USAsia Centre of Australia, and S. Rajaratnam School of International Studies of Singapore.
  • The theme for the conference was not specified in the search results, but it generally focuses on issues pertaining to the Indian Ocean region, such as maritime security, trade, and international cooperation.

Additional Information

  • The Indian Ocean Region (IOR) is of strategic importance to global trade and security. It includes key maritime routes that are vital for the global economy, making regional cooperation and stability crucial.
  • Maritime security is a recurring theme in the conference, addressing piracy, terrorism, and other non-traditional security threats, which are of paramount importance for the safety of sea lanes and international trade.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 537

Combined Defence Services (CDS) 2024• English• English

Political analysis involves both normative and empirical approaches. Which of the following statements is/are correct about the two approaches?

  1. Knowledge acquired through the empirical approach is value-loaded.
  2. Knowledge acquired through the normative approach is objectively neutral.

Select the correct answer using the code given below.

  1. AOption (a)

    1 only

  2. BOption (b)

    2 only

  3. COption (c)

     Both 1 and 2

  4. DOption (d)

    Neither 1 nor 2

View answer & explanation

Correct answer

Answer: (d)D.

Neither 1 nor 2

Why this answer is correct

The correct answer is Neither 1 nor 2.

Key Points

  • Normative and Empirical Approaches
  • Empirical Approach: This approach seeks to describe and analyze the political world through observed, factual evidence. It aims to be value-neutral and objective, focusing on what is, rather than what ought to be. Empirical political science assumes that facts exist and that these facts can be verified.
  • Normative Approach: This approach deals with questions about what ought to be. It aims to understand the values, purposes, and ethical considerations of politics, thus it is inherently value-laden and subjective.

Additional Information

  • Explanation:
  • Statement 1: Knowledge acquired through the empirical approach is not value-loaded; it is intended to be objectively neutral and based on factual, observable evidence.
  • Statement 2: Knowledge acquired through the normative approach is not objectively neutral; it is inherently value-laden and concerned with ethical, moral, and normative questions.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 538

Combined Defence Services (CDS) 2024• English• English

Which of the following statements regarding barrier islands is/are correct?

  1. These are small chain of sand islands that form offshore, far from the coast.
  2. Lagoons or shallower marshes separate the barrier islands from the mainland.
  3. Such locations are hazardous for settlements because they are easily swept away by storms and hurricanes.

Select the correct answer using the code given below.

  1. AOption (a)

    1 only

  2. BOption (b)

    1 and 2 only

  3. COption (c)

    2 and 3 only 

  4. DOption (d)

    1, 2 and 3

View answer & explanation

Correct answer

Answer: (c)C.

2 and 3 only 

Why this answer is correct

The correct answer is 2 and 3 only.

Key PointsBarrier Islands

  • Barrier islands are elongated, narrow islands made of sand or sediment that form parallel to the mainland coast, not far offshore. They serve to protect the coast from erosion and storms.
  • Lagoons, bays, or marshes often separate barrier islands from the mainland, providing vital habitats for a variety of wildlife and supporting rich biodiversity.
  • Despite their natural beauty and ecological importance, barrier islands are prone to erosion and can be severely impacted by storms and hurricanes. This makes them somewhat hazardous locations for permanent settlements due to their vulnerability to natural disasters.
  • The statement that barrier islands form far from the coast is incorrect. They are typically located relatively close to the mainland. Hence, statement 1 is incorrect.
  • The separation of barrier islands from the mainland by lagoons or shallower marshes is a defining characteristic, providing critical ecological functions. Hence, statement 2 is correct.
  • The vulnerability of these islands to storms and hurricanes, along with their shifting nature due to erosion and deposition, indeed makes them hazardous for permanent structures and settlements. Hence, statement 3 is correct.

Additional Information

  • Barrier islands play a critical role in coastal protection by absorbing the brunt of storm energy, which helps in reducing erosion and protecting the mainland from storm surges.
  • These islands are dynamic landscapes that shift over time due to processes such as sediment deposition and erosion. Their shape and size can change significantly after major storms and hurricanes.
  • Barrier islands also provide important habitats for wildlife, including birds, sea turtles, and various marine species. The marshes, lagoons, and intertidal zones between the islands and the mainland are rich in biodiversity.
  • Human activities, such as development and construction on barrier islands, can disrupt their natural processes and increase vulnerability to erosion and storm impacts. It is crucial to balance development with conservation efforts to protect these unique ecosystems and the services they provide.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 539

Combined Defence Services (CDS) 2024• English• English

Which one of the following statements is not correct for National Income Accounting for India? 

  1. AOption (a)

    Imports calculating are subtracted in Gross Domestic Product.

  2. BOption (b)

    Net factor payments earned from abroad are included in in Gross Domestic Product.

  3. COption (c)

    Purchase and sale of second-hand goods are not included in Gross Domestic Product.

  4. DOption (d)

    Inventories are included in Gross Domestic Capital Formation.

View answer & explanation

Correct answer

Answer: (b)B.

Net factor payments earned from abroad are included in in Gross Domestic Product.

Why this answer is correct

The correct answer is Option 2.

Key PointsNational Income Accounting for India

  • Imports calculation being subtracted in Gross Domestic Product (GDP) is a standard practice in national income accounting. This is because GDP measures the total market value of all final goods and services produced within a country in a given period. Imports are subtracted since they represent the spending on goods and services not produced domestically. Hence, statement 1 is correct.
  • Net factor payments earned from abroad are not included in the Gross Domestic Product. Instead, they are included in the Gross National Product (GNP). GNP adjusts GDP by adding income earned by residents from investments abroad and subtracting income earned by foreign residents from domestic investments. Hence, statement 2 is incorrect.
  • Purchase and sale of second-hand goods are not included in GDP because these transactions do not reflect current production. GDP measures the value of current production of goods and services within the national borders. Second-hand sales do not add to the current production; hence, they are excluded. Hence, statement 3 is correct.
  • Inventories are considered part of Gross Domestic Capital Formation. This includes the unsold goods and materials held by businesses, which represents investment in the economy. Including inventories in GDP accounts for production that has occurred but has not yet been sold. Hence, statement 4 is correct.

Additional Information

  • Gross Domestic Product (GDP) is a primary indicator used to gauge the health of a country's economy. It represents the total dollar value of all goods and services produced over a specific time period within a nation's borders.
  • Gross National Product (GNP), on the other hand, measures the total economic output of the residents of a country, including profits earned from overseas investments and excluding income earned within the domestic economy by overseas residents.
  • Net factor payments from abroad include wages, rents, and profits earned by residents from overseas investments minus the same incomes earned by non-residents from within the domestic economy. This distinction highlights the difference between GDP and GNP.
  • Second-hand goods are excluded from GDP calculations to ensure that the measure reflects only the production of new goods and services. This exclusion avoids double counting of goods that were produced in previous periods.
  • Inventories play a critical role in understanding economic activity. Changes in inventory levels can indicate future economic activity; for instance, an increase in inventories can signal that producers anticipate higher demand.
CDS General Knowledge 21 April 2024 Official Paper (Previous Year Paper)·English
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Question 540

Combined Defence Services (CDS) 2024• English• English

Match List - I with List - II and select the correct answer using the code given below the Lists:

List - I
(Political idea)
List - II
(Thinker)
A.Human beings, unlike all other objects, possess dignity1.Aung San Suu Kyi
B.It is Swaraj when   we learn to rule ourselves2.Subhas Chandra Bose
C.Freedom implies not only emancipation from political bondage but also equal distribution of wealth3.Immanuel Kant
D.For me real freedom is freedom from fear4.Mahatma Gandhi
  1. AOption (a)

    A - 3, B - 2, C - 4, D - 1

  2. BOption (b)

    A - 1, B - 4, C - 2, D - 3

  3. COption (c)

    A - 3, B - 4, C - 2, D - 1

  4. DOption (d)

    A - 1, B - 2, C - 4, D - 3

View answer & explanation

Correct answer

Answer: (c)C.

A - 3, B - 4, C - 2, D - 1

Why this answer is correct

The correct answer is A - 3, B - 4, C - 2, D - 1.

Key PointsMatching Political Ideas with Thinkers

  • Human beings, unlike all other objects, possess dignity is a philosophical idea associated with Immanuel Kant, a German philosopher who is considered a central figure in modern philosophy. Kant argued that humans have intrinsic value and dignity because of their ability to reason and should always be treated as ends in themselves, not merely as means to an end. Hence, A matches with 3.
  • It is Swaraj when we learn to rule ourselves reflects the political thought of Mahatma Gandhi, an Indian lawyer, anti-colonial nationalist, and political ethicist who led the campaign for India's independence from British rule. Gandhi's concept of Swaraj was not just political independence but self-rule and self-restraint. Hence, B matches with 4.
  • Freedom implies not only emancipation from political bondage but also equal distribution of wealth is a view that can be attributed to Subhas Chandra Bose, an Indian nationalist whose defiant patriotism made him a hero in India, but whose attempt during World War II to rid India of British rule with the help of Nazi Germany and Imperial Japan left a troubled legacy. Hence, C matches with 2.
  • For me real freedom is freedom from fear is a quote attributed to Aung San Suu Kyi, a Burmese politician, diplomat, author, and Nobel Peace Prize laureate (1991). Suu Kyi has been a notable proponent of democracy and human rights in Myanmar. Hence, D matches with 1.

Additional Information

  • Immanuel Kant is known for his theory of knowledge, ethics, and aesthetics. His categorical imperative provides a moral law that applies to all rational beings and is independent of personal motive or desire.
  • Kant's philosophy emphasizes the importance of autonomy and the moral worth of actions performed out of duty.
  • Mahatma Gandhi introduced the concept of non-violent resistance called Satyagraha, which he used effectively against British rule. Gandhi's ideas have inspired civil rights movements around the world.
  • Gandhi's emphasis on simple living, self-sufficiency, and swadeshi (the use of goods produced locally) were integral to his vision of Swaraj.
  • Subhas Chandra Bose is remembered for his role in India's independence movement as leader of the Azad Hind Fauj (Indian National Army). Bose sought to liberate India through armed struggle and sought assistance from Axis powers during World War II.
  • Bose's approach to freedom was more radical compared to other contemporary leaders, focusing on absolute independence through any means necessary.
  • Aung San Suu Kyi led the National League for Democracy (NLD) in Myanmar to a majority win in elections in 1990, although the military nullified the results and placed her under house arrest for almost 15 of the 21 years from 1989 to 2010.
  • Her non-violent struggle for democracy and human rights earned her international acclaim, though her later years in power have been marred by controversy.

How should I prepare for English Comprehension in Combined Defence Services (CDS)?

Solving previous year questions by topic helps identify recurring concepts, question patterns, and frequently asked sub-topics. Attempt each question, review the step-by-step explanation, and note down key formulas or facts for quick revision before the exam.