UPSC CAPF Previous Year GK Questions

Every biological molecule, from sugars and fats to proteins and DNA, is built on a skeleton of carbon atoms, which is why carbon is called the basic building block of life.

Raja Radhakanta Deb founded the Dharma Sabha in Calcutta in 1830 to defend orthodox Hindu customs against reformers. The Dharma Sabha was set up mainly to oppose Lord William Bentinck's regulation of 1829 that banned sati, which Raja Rammohan Roy had campaigned for.

Statement 2 is wrong because slate is a metamorphic rock, formed when shale is squeezed and heated, not a sedimentary rock.

The New Economic Policy of 1991 rested on liberalisation, privatisation and globalisation, and trade liberalisation and public sector disinvestment were among its main measures.

The Haber process is exothermic, not endothermic: nitrogen and hydrogen combine to form ammonia and release heat. In the Haber process, N2 + 3H2 ⇌ 2NH3 gives out about 92 kJ for every two moles of ammonia formed.

Phloem sieve tubes are not like xylem vessels: sieve tubes are living cells with thin walls and sieve plates, while mature xylem vessels are dead, hollow tubes with thick lignified walls.

Cold dry air below and warm moist air above makes the atmosphere stable, which suppresses rising air; a thunderstorm needs the reverse, warm moist air near the ground and colder, drier air aloft.

Zambia lies north of the Zambezi river and is separated from South Africa by Zimbabwe and Botswana, so the two countries share no border.

The first hill stations grew out of military needs: cantonments for troops and places where soldiers could be kept healthy.

The Bohr effect is the fall in haemoglobin's affinity for oxygen when carbon dioxide and acidity rise, so oxygen is unloaded where tissues need it most.

The Himalayan Frontal Fault lies on the southern edge of the range and separates the Himalaya from the Indo-Gangetic plains, not from Tibet.

A black plate with yellow letters marks a vehicle registered for self-drive rental, which the customer drives without a hired driver.

Raipur, in the Chhattisgarh basin, receives about 1,200 to 1,300 mm of rain a year, more than any of the other three cities.

The Congress Socialist Party was formed in 1934 by Acharya Narendra Deva and Jayaprakash Narayan, and in 1936 Nehru asked the Congress to adopt socialism.

Chaired by Y. V. Reddy, it brought the 2011 Census into the devolution formula for the first time, through a criterion called demographic change.

Arteries have the thickest walls of all blood vessels, not the thinnest, because they carry blood away from the heart under high pressure.

In Koppen's scheme for India, most of the Ganga plain falls in the Cwg type: a monsoon climate with a dry winter.

Heat from the Earth's interior sets up slow convection currents in the mantle, and these drag the rigid plates resting on it.

Public goods are non-rival and non-excludable, but externalities cause market failure, so the market does not supply the optimal amount.

Lead nitrate breaks down only when it is heated strongly, so the reaction absorbs heat and is endothermic. On heating, lead nitrate gives lead oxide, brown fumes of nitrogen dioxide and oxygen: 2Pb(NO3)2 → 2PbO + 4NO2 + O2.