CDS GK Questions 2026

In a crash a sensor fires an igniter, and sodium azide breaks down almost instantly into sodium and a large volume of nitrogen gas that fills the bag.

Kerosene and petrol mix completely with each other, and their boiling points are close, so they are separated by fractional distillation.

The Tsangpo enters India as the Dihang and the Godavari has the second largest basin, but the Chambal and Betwa join the Yamuna, not the Ganga.

Diamond is an allotrope of carbon, made of carbon atoms alone and nothing else. In diamond each carbon atom is joined to four other carbon atoms by strong covalent bonds, forming a rigid three-dimensional network.

Oxygen in the air reacts with the fats and oils, and the food turns rancid, with a bad smell and taste.

Feldspar makes up about half of the earth's crust and is light cream to salmon pink in colour, but magnesium is not its common element.

When sandstone, made mostly of quartz grains, is put under great heat and pressure, the grains fuse together and the rock turns into quartzite.

The volcanoes of Hawaii, such as Mauna Loa and Kilauea, are broad, gently sloping cones built by runny basaltic lava.

Article 13(1) makes a pre-Constitution law void only to the extent of its inconsistency with the Fundamental Rights, so the Supreme Court in Bhikaji Narain Dhakras, 1955, held that such a law is not erased but merely eclipsed, staying unenforceable until the shadow is lifted, after which it revives.

An eleven judge bench held by six to five that Parliament cannot abridge Fundamental Rights by amendment, but the Court did not want to unsettle the land reform amendments already acted upon, so it declared that its ruling would operate only for the future.

A bench of thirteen judges held by a majority of seven to six that Parliament may amend any part of the Constitution under Article 368 but cannot destroy or damage its basic structure or essential features.

Clause (1) says that if a State law is repugnant to a law made by Parliament on a Concurrent subject, the parliamentary law prevails and the State law is void to the extent of the repugnancy.

That section barred a detained person from disclosing in court the grounds of his detention or the representation he had made against it.

The Bengal Money Lenders Act of 1940 limited the interest and the amount recoverable by money lenders, a provincial subject, but it also affected promissory notes, which belonged to the central list.

That clause says that no law made by Parliament shall be deemed invalid on the ground that it would have extra-territorial operation, and the courts have built on it the rule that a State law too may apply to an object or person outside the State if there is a…

The petitioner had settled his tax liability under a provision later found to violate Article 14, and it was argued that by agreeing to the settlement he had waived his right to equality.

The doctrine means that a legislature cannot do by an indirect route what the Constitution forbids it to do directly; if it has no competence over a subject, no clever drafting can give it that competence.

Article 246 read with the Seventh Schedule gives Parliament and the State Legislatures separate fields of law making, but subjects overlap in practice, so a court must find the true nature and character of the law, its pith and substance, and ignore incidental encroachment on the other list.

In that case a 1947 motor vehicles law of Central Provinces and Berar had become unenforceable because it clashed with the freedom of trade under Article 19(1)(g).

A price floor is a lowest price fixed by the government, and the MSP guarantees farmers that price for crops such as jowar.