CDS Previous Year GK Questions

A zeugen is a tabular ridge carved by wind abrasion in deserts, while a cirque is glacial and a stack is made by sea waves.

Free legal aid is a Directive Principle under Article 39A, and the Supreme Court has made it the duty of the police to inform the nearest Legal Aid Committee as soon as a person is arrested.

X-rays can pass through solid materials and their wavelength is close to the spacing of atoms, so they serve both purposes.

This is the statement that is not correct; the other three describe the benzene molecule correctly, and UPSC's official key also gives D. Benzene, C6H6, is a flat ring of six carbon atoms.

Statement 2 is the only incorrect one, because a compound always has a fixed composition, not a variable one. An element is the simplest form of matter and cannot be broken down into simpler substances by chemical reactions, so statement 1 is correct.

It is the Finance Ministry's nodal department for economic policy, at home and abroad, including the management of foreign exchange.

Adenosine triphosphate stores energy in its phosphate bonds and releases it wherever the cell needs it, so it is called the energy currency of the cell.

Narayan Malhar Joshi was the main organiser behind the founding of the All India Trade Union Congress (AITUC) in Bombay in October 1920.

It flows south along the west coast of North America, carrying cold water from higher latitudes towards the equator. As a rule, currents moving from the poles towards the equator are cold, and those moving from the equator towards the poles are warm.

This is the order in which these metals stand in the reactivity series, and it matches how vigorously they release hydrogen from dilute hydrochloric acid.

Iron is needed to make haemoglobin, so too little iron means too little haemoglobin and a reduced ability of the blood to carry oxygen.

Loktak is in Manipur, Barapani in Meghalaya, Kolleru in Andhra Pradesh, and Pulicat on the Andhra Pradesh–Tamil Nadu border. Loktak is the largest freshwater lake in north-east India, famous for its floating islands of vegetation called phumdis; Keibul Lamjao, the only floating national park in the world, lies on it.

All three statements are correct descriptions of fog and its two main types. Fog forms when air near the ground cools to its dew point and its water vapour condenses on tiny dust and smoke particles, so it is in effect a cloud at or near ground level.

The Salal hydroelectric project is a run-of-the-river project on the Chenab in the Reasi district of Jammu and Kashmir. Built and run by NHPC, Salal has an installed capacity of 690 MW and was the first project India built under the Indus Waters Treaty of 1960 on a western river.

All three statements correctly describe how particles move in the two kinds of mechanical waves. In a longitudinal wave, such as sound in air, the particles vibrate back and forth along the direction in which the wave travels.

Both statements repeat paragraph 3 of the Fifth Schedule of the Constitution, which deals with the administration of Scheduled Areas.

In paper making the raw plant material is cooked with caustic soda, which dissolves the gums, resins and lignin that bind the cellulose fibres together.

Aluminium has three valence electrons, one fewer than silicon, so each aluminium atom leaves a hole that acts as a positive charge carrier.

An ecosystem is a community of living things together with the non-living environment they interact with, and it can be as large as an ocean or as small as an aquarium.

Since the 44th Amendment, the President cannot suspend the right to move a court for enforcing Articles 20 and 21, even during a national emergency.