CDS GK Questions 2026

Structural unemployment arises when the structure of the economy changes, through new technology or a lasting shift in what people buy, and workers' skills no longer match the jobs available.

Statements 1 and 4 are true, while 2 and 3 are false. After the Gandhi-Irwin Pact of March 1931, Gandhi attended the Second Round Table Conference in London (September to December 1931) as the sole Congress representative.

All three factors shape the general circulation of the atmosphere, which is why UPSC's official key gives D. Planetary winds are the trade winds, the westerlies and the polar easterlies.

Joining a program to the library routines it calls is the job of a linker, a separate system utility, not of the operating system.

Caesium melts at about 28.5 °C, the lowest of these alkali metals, so it can turn liquid on a warm day or in the hand.

The Kuroshio is a warm current that flows north-east along the east coast of Japan, carrying warm tropical water from the North Equatorial Current.

Chalk is a soft, white limestone built up from the tiny calcium carbonate shells of marine micro-organisms, so it is an organically formed sedimentary rock.

South-east China has a warm, humid subtropical climate with rain in every season, and its natural vegetation is broadleaf evergreen forest of the subtropics.

The girth, or thickness, of a stem increases only through the lateral meristems, the vascular cambium and the cork cambium.

This statement is false: GPS was built by the United States for its military, but it has been open to civilian users worldwide for decades.

The gastric glands in the stomach wall secrete pepsin, which begins the digestion of proteins into smaller peptides. The chief cells of the gastric glands release pepsin in an inactive form, pepsinogen.

The blue colour comes from water of crystallisation: blue vitriol is CuSO4·5H2O, and heating drives off these five water molecules to leave white anhydrous copper sulphate.

Zinc lies in the middle of the reactivity series, so its oxide can be reduced to the metal by heating it with carbon (coke): ZnO + C → Zn + CO.

Statements 1 and 2 are correct, but statement 3 is wrong because the convection cells that drive plate movement lie in the mantle, not in the crust.

This is false: aluminium has three electrons in its outer shell and loses all three, so its valency is 3.

Cambium lies along the sides of stems and roots and its dividing cells increase their thickness, which is the work of a lateral meristem.

Statements I and II describe the Coriolis force correctly; statement III is wrong, because away from the equator the wind ends up blowing parallel to the isobars.

Sodium hydroxide dissolves in water and splits completely into Na+ and OH- ions; the ions carry current and the hydroxide ions make the solution strongly basic.

Powers of lenses in contact simply add, so the combination has a power of 2 + 2 = 4 dioptre, and its focal length is 1/4 m, that is 0.25 m. The power of a lens is the reciprocal of its focal length in metres, P = 1/f, and is…

All three statements about the Richter scale are correct. Statement 1 is correct: the American seismologist Charles F. Richter devised the scale in 1935 at the California Institute of Technology, working with Beno Gutenberg.