RRB NTPC GK Questions 2026

Nitrogen is an unreactive gas, so it drives the oxygen out of the packet and stops the oil in the chips from getting oxidised.

Violet has the shortest wavelength in visible light, so glass slows it the most and bends it the most. White light is a mix of seven colours, remembered as VIBGYOR.

Each metal here is paired with one of its best-known ores. Bauxite is hydrated aluminium oxide; alumina is refined from it and then broken down by electrolysis in the Hall-Héroult process.

The number 235 is the mass number and uranium's atomic number is 92, so the nucleus holds 235 minus 92, that is 143 neutrons.

Rachel Carson, an American marine biologist and writer, published Silent Spring in 1962.

A bioindicator is a living organism whose presence, absence or health tells us about the quality of the environment. Lichens are a partnership between a fungus and an alga or cyanobacterium; they have no roots and take water and nutrients straight from the air and rain.

Veins usually carry blood low in oxygen back to the heart, but the pulmonary veins are the exception. After blood picks up oxygen in the lungs, four pulmonary veins, two from each lung, bring this oxygen-rich blood to the left atrium of the heart.

The pancreas is both an exocrine gland, pouring digestive enzymes into the intestine, and an endocrine gland. Its endocrine part is made of small clusters of cells called the islets of Langerhans.

The liver needs vitamin K to make several clotting factors, including prothrombin, which help blood form a clot and seal a wound.

When light travels from a denser medium to a rarer one and strikes the boundary at an angle greater than the critical angle, it does not pass out at all but is reflected completely back.

Sensex, short for ‘Sensitive Index’, tracks 30 large, well-established and actively traded companies listed on the BSE, chosen from different sectors of the economy.

Article 280 of the Constitution requires the President to set up a Finance Commission every five years, or earlier if needed, to recommend how the taxes collected by the Union should be shared with the states and how grants-in-aid should be given.

The Total Fertility Rate is the average number of children a woman would have in her lifetime if she followed the current birth rates at each age from 15 to 49.

The American economic historian Morris David Morris built the Physical Quality of Life Index in the 1970s for the Overseas Development Council, and set it out in his 1979 book on measuring the condition of the world’s poor.

A landlocked country has no coastline on an open sea or ocean. South America has only two such countries, Bolivia and Paraguay.

India keeps one standard time for the whole country, Indian Standard Time, based on the 82° 30′ E meridian, which passes near Mirzapur in Uttar Pradesh.

At Devprayag in the Garhwal region of Uttarakhand, the Bhagirathi, coming from the Gangotri glacier, meets the Alaknanda, and from this confluence onwards the river is called the Ganga.

Trans-Himalayan rivers rise beyond the Great Himalaya, on the Tibetan side, and are older than the mountains themselves. As the Himalaya rose, they kept cutting down through it, which is why they flow through deep gorges; geographers call them antecedent rivers.

The Himadri, or Greater Himalaya, is part of the Himalayan system, the youngest fold mountains in India, formed as the Indian plate pushed into the Eurasian plate and folded up the sediments of the old Tethys Sea.

A Nyaya Panchayat is a village court for small civil and criminal disputes, a judicial body that some states created, so it is not a tier of local self-government.