UPSC CAPF GK Questions 2026

Myxomatosis passes from rabbit to rabbit through biting insects and contact, so it spreads fastest where rabbits are crowded together.

Making a genetically modified organism needs all three steps: find the useful DNA, put it into the host, and make sure the host keeps it and passes it on.

The ozone hole, a sharp seasonal thinning of stratospheric ozone, forms every southern spring over Antarctica. During the long polar winter a strong circular wind, the polar vortex, isolates the air over Antarctica, and temperatures fall low enough to form polar stratospheric clouds.

Eutrophication is the enrichment of a water body with nutrients, so statement 2 is correct, while statement 1 describes the opposite condition.

The major languages of India belong to four language families: Indo-European (Indo-Aryan), Dravidian, Austric (Austro-Asiatic) and Sino-Tibetan. The Indo-Aryan branch of the Indo-European family is the largest, spoken by about three-quarters of Indians and including Hindi, Bengali, Marathi, Gujarati, Punjabi and Odia.

An oxbow lake forms when a river erodes the outer banks of a meander and deposits silt that seals off the loop, so it needs both erosion and deposition.

Ibn Battuta came in the 14th century, Nikitin in the 15th, Monserrate in the 16th and Peter Mundy in the 17th.

Of the four states listed, Punjab had the smallest population in the 2011 Census, about 2.77 crore people. The 2011 Census, the fifteenth census of India, counted about 121 crore people in all.

John Kay, an English inventor, patented the flying shuttle in 1733, one of the first machines of the Industrial Revolution.

Shortughai, a Harappan trading settlement in north-eastern Afghanistan, is the site where traces of irrigation canals have been found. Most Harappan farmers relied on river floods and wells, and no canals have been found in the Indus heartland.

The doldrums are the equatorial belt of calm and light, variable winds, and the belt shifts with the seasons; they have nothing to do with the roaring forties.

On 24 August 1925 Vithalbhai Patel became the first elected Indian (non-official) President, or Speaker, of the Central Legislative Assembly.

In June 2004 he served as pro-tem Speaker of the 14th Lok Sabha and was then elected Speaker unanimously, the first pro-tem Speaker to become Speaker in this way.

Who finally bears a tax (its incidence) is decided by the market, through the elasticities of demand and supply, not by the law that says who must pay it.

Xerophytes are plants adapted to live in deserts and other places with very little water; the Greek word "xeros" means dry.

Genetic engineering uses recombinant DNA, cloning and gene transfer, and restriction enzymes cut DNA at specific sites; but they do not unzip DNA into two strands, so statement 3 is wrong.

Itai-itai disease is caused by cadmium poisoning and was first reported in Japan. In the early 20th century, mining waste from upstream released cadmium into the Jinzu river in Toyama Prefecture, Japan.

All four were Russian Marxists, so they belong to one school of thought. Plekhanov is called the father of Russian Marxism; in 1883 he founded the Emancipation of Labour group in Geneva with Vera Zasulich, who had begun as a populist revolutionary.

Article 170 of the Constitution says a State Legislative Assembly shall have not more than 500 and not less than 60 members chosen by direct election.

Cholesterol is a sterol, a kind of lipid (fat-like substance) that does not dissolve in water. Cholesterol is made mainly in the liver and also comes from animal foods such as eggs, meat and butter; plants do not contain it.