Q1
Which one of the following elements is used as a timekeeper in atomic clocks?
General KnowledgePhysics
UPSC CDS · Solved paper
All 120 questions, textbook-style — tap “Show answer” on any question to reveal the correct option and explanation.
Which one of the following elements is used as a timekeeper in atomic clocks?
Which one of the following elements is involved in the control of water content of the blood?
Which one of the following gases dissolves in water to give acidic solution?
Which one of the following elements is essential for the formation of chlorophyll in green plants?
Consider the following chemical reaction: aFe2O3(s) + bCO(g) → cFe(s) + dCO2 In the balanced chemical equation of the above, which of the following will be the values of the coefficients a, b, c and d respectively?
Why is argon gas used along with tungsten wire in an electric bulb?
Which one of the following is the correct relation between the Kelvin temperature (T) and the Celsius temperature (tC)?
Sound waves cannot travel through a
Which one of the following is the value of one nanometer?
Consider the following statements:
Which of the statement(s) given above is/are correct?
Working of safety fuses depends upon
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Which one of the following is a true fish as per the biological system of classification?
In which one of the following types of connective tissues in animals does fat get stored?
Which one of the following pairs about organ /part that helps in locomotion is not correctly matched?
Lysosome is formed from which of the following cell organelles?
A protein is synthesized in the endoplasmic reticulum bound ribosomes and it targets to the inner thylakoid space of chloroplast. How many double-layered membrane layers it has to pass to reach its destination?
Which of the following causes adiabatic temperature changes in atmosphere?
Which one of the following is applicable to collision-coalescence process of precipitation?
Which one of the following places of India experiences highest atmospheric pressure during winter?
Match List-I with List-II and select the correct answer using the code given below the Lists:
List I (Hypothesis/Theory)
List II (Propounder)
Code: A B C D
Bright light is found to emit from photographer’s flashgun. This brightness is due to the presence of which one of the following noble gases?
Which one of the following is not a characteristic of a compound?
Which of the following substances cause temporary hardness in water?
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Which one of the following elements will be an isobar of calcium if the atomic number of calcium is 20 and its mass number is 40?
Which of the following represents a relation for ‘heat lost = heat gained’?
Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes:
When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible for this observation is:
Match List-I with List-II and select the correct answer using the code given below the Lists:
List I (Cloud)
List II (Characteristic)
Code: A B C D
Which one of the following is not an exclusive right of the concerned coastal actions over Exclusive Economic Zone (EEZ)?
In which one of the following groups of States in India is the Integrated Coastal Zone Management (ICZM) Project being implemented as a pilot investment?
Which of the following statements about the National Water Academy (NWA) is/are correct?
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A wire of copper having length l and area of cross-section A is taken and a current I is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be
The pressure of a fluid varies with depth h as P = P0 + ρgh, where ρ is the fluid density. This expression is associated with:
Consider the following constituent gases of the atmosphere:
Which one of the following Indian States has the highest percentage of Scheduled Tribe population to its total population?
Extrusive volcanoes are not found in which one of the following mountains?
Which one of the following crops is not cultivated in Karewas, the lacustrine deposits of sand, clay, loam, silt and boulders?
Consider the following tributaries of river Ganga:
Which of the following National Parks of India are declared as World Heritage by UNESCO?
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Match List I with List II and select the correct answer using the code given below the Lists:
List I (Railway Zone)
List II (Headquarters)
Code: A B C D
Which one of the following statements about lymph is correct?
Which of the following classes of animals has/ have three-chambered heart?
Accumulation of which one of the following in the muscles of sprinters leads to cramp?
Which one of the following statements about Exchange-Traded Fund (ETF) is not correct?
Which one of the following is the maximum age of joining National Pension System (NPS) under the NPS-Private Sector?
The Reserve Bank of India has recently constituted a high-level task force on Public Credit Registry (PCR) to suggest a road map for developing a transparent, comprehensive and near-real-time PCR for India. The task force is headed by
In October 2017, India sent its first shipment of wheat to Afghanistan as a part of commitment made by the Government of India to supply 1.1 million tonnes of wheat to that country on grant basis. The shipment was sent through
Which of the following statements about the India Post Payments Bank (IPPB) is/are correct?
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Which of the following are the functions of the National Human Rights Commission (NHRC)?
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A person is disqualified for being chosen as, and for being, a Member of either House of the Parliament if the person
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According to the Election Commission of India, in order to be recognized as a ‘National Party’, a political party must be treated as a recognized political party in how many States?
Which one of the following statements with regard to Antrix Corporation Limited is correct?
Verses ascribed to poet-saint Kabir have been compiled in which of the following traditions?
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Around twelfth century, Sufi Silsilas began to crystallize in different parts of the Islamic world to signify
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In the 10th Mandala of the Rigveda, which one of the following hymns reflects upon the marriage ceremonies?
Which of the following statements about the Non-Cooperation Movement is/are correct?
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Which one of the following was a focus country of the ‘World Food India’, a mega food event held in November 2017 in New Delhi?
Which one of the following States will host the Nobel Prize Series—India 2018 {Science Impacts Life) Exhibition?
The Ministry of Communication has recently launched a Pan India scholarship programme for school-children called ‘Deen Dayal SPARSH Yojana’. The objective of the scheme is to increase the reach of
Which one of the following temples of India has won the ‘UNESCO Asia Pacific Award of Merit, 2017’ for cultural heritage conservation?
Which one of the following teams was defeated by India to win the Women’s Hockey Asia Cup title, 2017?
Which one of the following statements about India is not correct?
Which one of the following statements is not correct?
Which one of the following Amendments to the Constitution of India has prescribed that the Council of Ministers shall not exceed 15 percent of total number of members of the House of the People or Legislative Assembly in the States?
Which of the following about the role of Indian Coast Guard is/are correct?
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Which one of the following is India’s first indigenously designed and developed long-range subsonic cruise missile which can be deployed from multiple platforms?
The Mmistry of Power, Government of India has recently constituted a Committee to investigate the causes of the accident that occurred on 1st November, 2017 at Feroze Gandhi Thermal Power Plant Ltd., Unchachar, in Uttar Pradesh. Who among the following is the Chairman of the Committee?
In November 2017, an Indian short film, The School Bag won the Best Short Film Award at the South Asian Film Festival held at Montreal. Who among the following is the Director of the film?
In November 2017, India’s MC Mary Kom won the gold medal at the Asian Boxing Championship, 2017 held at Ho Chi Minh City in Vietnam. In which one of the following categories was she declared winner?
Which one of the following is the theme of the World Soil Day, 2017?
Who among the following is the winner of the National Badminton Championship (Men), 2017?
Which of the following statements about the usage of the term ‘barbarian’ is/are correct?
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Which one of the following statements is not correct?
Consider the following statement: “So much is wrung from the peasants, that even dry bread is scarcely left to fill their stomachs.” Who among the following European travellers had made the above statement about the condition of peasantry in the Mughal Empire?
What is the name of the literary genre developed by the Khojas who are a branch of the Ismaili sect?
Who was/were the 10th century composer(s) of the nalayira Divya Prabandham?
Which one of the following is not a correct ascending order of commissioned ranks in the defence forces of India?
Which of the following statements about Attorney General of India is/are not correct?
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Under which one of the following Amendment Acts was Sikkim admitted into the Union of India?
Which one of the following became a part of China in 1997 following the principle of ‘one country, two systems’?
Which one of the following statements in respect of the States of India is not correct?
Consider the following statements about National Wildlife Action Plan (NWAP) of India for 2017-2031:
Which of the statements given above is/are correct?
Growth in production (in percent) of which one of the following core industries in India during the period 2015-2016 was negative?
eBiz is one of the integrated services projects and part of the 31 Mission Mode Projects (MMPs) under the National e-Governance Plan of the Government of India. eBiz is being implemented under the guidance and aegis of the Department of Industrial Policy and Promotion, Ministry of Commerce and Industry by
Which of the following statements about the olive ridley turtles is/are correct?
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Consider the following statement: “A sound body means one which bends itself to the spirit and is always a ready instrument at its service.” The above statement is attributed to
Who among the following was the founder of Phoenix Settlement?
Name the platform used for ritual purposes by the kings of the Vijayanagara Empire.
The idea of ‘Farr-i Izadi’, on which the Mughal kingship was based, was first developed by which one of the following Sufi saints?
Which Buddhist text contains an account of the Mauryan Emperor Ashoka?
Which one of the following statements about Buddhist Stupas in India is not correct?
Which one among the following States of India has the largest number of seats in its Legislative Assembly?
Which of the following statements about the Ordinance-making power of the governor is/ are correct?
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Which one of the following events is not correctly matched with the year in which it happened?
Consider the following statements about Indo-Tibetan Border Police (ITBP):
Which of the statements given above are correct?
Which one of the following is not an International Human Rights Treaty?
In the context of elections in India, which one of the following is the correct full form of VVPAT?
Which one of the following is not an objective of the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY)?
Which one of the following statements about ‘Niryat Bandhu Scheme’ is correct?
Which one of the following statements about the Deen Dayal Upadhayaya Grameen Kaushalya Yojana (DDU-GKY) is not correct?
Where is Hambantota Port located?
The projects under Coastal Berth Scheme of the flagship Sagarmala Programme are distributed over how many States?
Which one of the following statements about the National Adaptation Fund for Climate Change is not correct?
‘SAMPRITI-2017’ is a joint militaiy exercise between armed forces of India and
The judgement of the Supreme Court of India in the Vishakha Case pertains to
The first BRICS Summit, after the inclusion of South Africa, was held at
Who deciphered the Brahmi and Kharoshthi scripts?
Which of the following is/are the feature(s) of the Brahmadeya Grants during 600-1200 AD?
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Who is the author of Manimekalai?
Which one of the following statements about the Elephanta Island is correct?
Which of the following statements about Sir Syed Ahmad Khan is/are correct?
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Consider the following statements about impact of tax:
Which of the statements given above is/are correct?
According to the law of diminishing marginal utility, as the amount of a good consumed increases, the marginal utility of that good tends to