RRB NTPC GK Questions 2026

Treating rock phosphate, which is insoluble calcium phosphate, with sulphuric acid gives superphosphate of lime, a fertiliser whose phosphorus plants can absorb.

A nitrogen molecule, N₂, is diatomic, not triatomic; its two atoms are joined by a triple bond, and the molecules attract each other only weakly.

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.

DigiPost is a phygital mail service of the Department of Posts under which traffic e-challans issued by the Gujarat Police are transmitted digitally and then delivered in physical form to the citizen concerned.

Since 2 October 2026 the Department of Posts disposed of 3,06,026 kg of scrap and that fetched revenue of Rs 67.56 lakh.

Under Special Campaign 6.0 the Department of Posts set three targets: resolution of 1,50,000 public grievances, disposal of 1,500 appeals and cleanliness drives at 1,35,000 sites across the country.

Special Campaign 6.0 is being carried out at postal establishments throughout the country over that month by the Department of Posts, which comes under the Ministry of Communications.

The port of call was Salalah in Oman, so the host service was Oman's own navy.

This is the expansion given for MAHASAGAR, the vision that Lokayan-2026 is said to advance as INS Sudarshini sails through international waters as an ambassador of India, winning goodwill and building maritime partnerships.

The sail training ship called at Salalah from 14 to 17 October 2026 and sailed from there to continue Lokayan-2026, the transoceanic deployment that has now reached its tenth month.