RRB Group D GK Questions 2026

The Food Safety and Standards Authority of India is the statutory body that lays down standards for food and regulates its manufacture, storage, sale and import across India.

Uric acid is the end product of the breakdown of purines, which come from the nucleic acids DNA and RNA, so gout patients are told to cut down purine-rich food.

It is called dry ice because, at ordinary pressure, it changes directly from solid to gas (sublimation) instead of melting, so it never makes anything wet.

Tin is a chemical element (symbol Sn, atomic number 50), a pure substance made of only one kind of atom, so it is not a mixture.

Air is optically rarer than water, so light speeds up, not slows down, when it passes from water into air.

When the force acts opposite to the displacement, the angle between them is 180°, and work W = F d cos 180° = −F d. Work done by a force is the product of the force, the displacement and the cosine of the angle between them.

Lymph forms when plasma leaks out of blood capillaries into the spaces between cells, so it is essentially plasma with less protein and no red blood cells.

The retina is the light-sensitive layer at the back of the human eye; it is not a part of any microscope.

Solid carbon dioxide is called dry ice because it turns straight into gas without melting into a liquid, so it leaves nothing wet behind.

Defining acids and bases by the H⁺ and OH⁻ ions they release in water is exactly the theory Svante Arrhenius gave in 1884.

Tritium gives out beta particles, not alpha particles, and a water molecule is bent, not linear, so these two statements are wrong.

NCRTC is developing a captive solar power plant of this size, and it also runs a programme called Solar on Track, so that the corridor costs less to operate and places a lighter burden on the environment.

It built and runs the Namo Bharat service and it organised Namo Bharat Diwas in New Delhi, where its Managing Director Shalabh Goel welcomed the Union Minister of Housing and Urban Affairs and Power, Manohar Lal.

On that day the Prime Minister dedicated the full Delhi-Ghaziabad-Meerut corridor to the nation, and Meerut Metro was handed over at the same time.

The Namo Bharat regional rapid rail corridor runs from Delhi to Meerut through Ghaziabad and measures 82 km end to end.

The state's fisheries department sent its first consignment of trout abroad to the neighbouring country, an achievement the Secretary described as opening new avenues of international trade for hill farmers.

That is the outlay of the state's own trout scheme, under which Uttarakhand plans 1,500 raceways, 100 mini hatcheries and 600 cold-storage facilities by 2028-29.

The district in Uttarakhand has been notified as a Cold Water Fisheries Cluster under the scheme, and the Secretary of the Department of Fisheries reviewed its progress on the spot at Munsyari.

Bangabhaban in Dhaka is the official residence of the President of Bangladesh. The name itself carries the clue, since Banga is the old name of the Bengal region, and the building served earlier as the residence of the governor of East Bengal.

The Potala Palace rises above Lhasa, the chief city of Tibet, and was the winter palace of the Dalai Lamas from the seventeenth century.