UPSC CAPF Previous Year GK Questions

Nuclear power runs on uranium and thorium, mined minerals whose stock is finite, so it is a non-renewable source even though it is low in carbon.

Guard cells are specialised epidermal cells that surround each stoma on the surface of a leaf. Each stoma is a tiny pore bordered by two guard cells, which are bean-shaped in most plants and dumb-bell shaped in grasses.

It is the umbrella scheme of the Ministry of Food Processing Industries for building modern infrastructure and an efficient supply chain from farm gate to retail outlet.

Colson Whitehead's novel won the 2017 Pulitzer Prize for Fiction. The Underground Railroad follows Cora, a young woman who escapes a cotton plantation in Georgia.

Vitamin C has no carboxyl group; its acidity comes from an enol group in its ring. Ascorbic acid, C6H8O6, is a five-membered lactone ring carrying hydroxyl groups.

Above the threshold, the kinetic energy of the ejected electrons rises as the frequency of the light rises, so the statement that it does not change is wrong.

Charge equals current multiplied by time, so Q = 1.5 A × 0.010 s = 0.015 C. Electric current is the rate at which charge flows, I = Q/t, so the charge that passes in a given time is Q = I × t. One ampere means one coulomb of…

Platelets plug a damaged vessel and start the chain that forms a clot. Platelets, or thrombocytes, are small cell fragments made from large cells called megakaryocytes in the bone marrow.

Mendel worked out the laws of inheritance by crossing garden pea plants, Pisum sativum. Gregor Johann Mendel, an Austrian monk, carried out his hybridisation experiments between 1856 and 1863 in the monastery garden at Brno and published the results in 1866.

Ways and Means Advances are short-term loans from the RBI, and the scheme began in 1997. Governments often spend before their receipts arrive.

High pressure pushes the gas molecules close together and low temperature slows them down, so the attractive forces can hold them as a liquid.

Jupiter is a planet; it does not make its own light and shines only by reflecting sunlight. A luminous object produces light of its own, as stars do by nuclear fusion in their cores, where hydrogen is turned into helium.

The liver cells (hepatocytes) are rich in smooth endoplasmic reticulum, whose enzymes break down drugs, alcohol and poisons into harmless forms.

Red biotechnology is the branch applied to medicine and health care, including the making of insulin, antibiotics and vaccines. Biotechnology is often divided by colour according to its field of use.

The districts taken from Awadh and given to Shah Alam II were Kora and Allahabad, not Banaras. After the Battle of Buxar (1764), Robert Clive signed two treaties at Allahabad in August 1765.

The triple point is the single temperature and pressure at which the solid, liquid and vapour phases of a substance exist together in equilibrium.

Transfer RNA picks up a specific amino acid and brings it to the ribosome, where it is added to the growing protein chain.

Cerium oxide (CeO2) strongly absorbs ultraviolet rays while letting visible light through, so it is added to glass to make it UV-protective.

Congress was represented by Jawaharlal Nehru and Maulana Abul Kalam Azad, its president, not by Sardar Patel. With Japan advancing in South-East Asia, the British War Cabinet sent Sir Stafford Cripps to India in March 1942, after he had persuaded it to accept a draft declaration.

Methanol (CH3OH) is called wood spirit or wood alcohol because it was first obtained by the destructive distillation of wood.