RRB Group D GK Questions 2026

Article 20 gives protection in respect of conviction for offences, and it contains exactly these three safeguards.

The NCERT Class 11 geography book describes Mizoram as the 'Molassis basin', made up of soft, unconsolidated deposits.

National Waterway 2 is the Brahmaputra from Dhubri to Sadiya in Assam, a stretch of 891 km declared in 1988.

Going from north to south, the order is Aravalli, Vindhya, Satpura and then Ajanta. The Aravalli Range runs across Rajasthan in the north-west and is among the oldest fold mountains in the world.

On 20 March 1927 Dr B.R. Ambedkar led thousands of people to the Chavdar Tank at Mahad, in today's Raigad district of Maharashtra, and drank its water to assert the right of Dalits to use public water sources.

The Moplah (Mappila) Rebellion of 1921 broke out in the Malabar region of present-day Kerala, which was then a district of the Madras Presidency.

The Indian National Congress held its first session in Bombay from 28 to 31 December 1885, at the Gokuldas Tejpal Sanskrit College.

Mahatma Gandhi gave the call 'Do or Die' (Karo ya Maro) when the Quit India Movement was launched in August 1942.

Kanha Tiger Reserve lies in the Mandla and Balaghat districts of Madhya Pradesh, in the Maikal hills at the eastern end of the Satpura range.

Polythene is a synthetic plastic that bacteria and fungi cannot break down, so it is non-biodegradable. A plastic bag can stay in soil or water for hundreds of years.

Rain with a pH below 5.6 is called acid rain. Even clean rain is slightly acidic, with a pH of about 5.6, because carbon dioxide from the air dissolves in it to form weak carbonic acid; that is why 5.6, not 7, is the dividing line.

The ozone layer shields us from the Sun's harmful ultraviolet rays, so when it thins, that protection is lost. It lies in the stratosphere, roughly 15 to 35 km above the Earth, and absorbs most of the UV-B and UV-C radiation.

A forest forms and runs on its own, without any human effort, so it is a natural ecosystem.

Washing soda is sodium carbonate decahydrate: each unit of sodium carbonate holds ten molecules of water of crystallisation. It is made from common salt in steps: baking soda is heated to get anhydrous sodium carbonate, called soda ash, which is then recrystallised from water to give washing soda crystals.

Red has the longest wavelength in visible light, about 700 nm, so the tiny particles of air, fog, smoke and dust scatter it the least.

The reactivity series lists metals from the most reactive to the least reactive, and potassium heads it because it loses its single outer electron most easily.

It gives the direction of the force, and so of the motion, on a current-carrying conductor placed in a magnetic field, which is exactly what turns the coil of a motor.

Combustion means burning in oxygen, and complete burning of methane gives carbon dioxide, water, heat and light. The equation is balanced: one carbon, four hydrogen and four oxygen atoms on each side.

The N shell is the fourth shell (n = 4), and the most electrons a shell can hold is given by the formula 2n², so 2 × 4² = 32.

In diamond every carbon atom is joined to four other carbon atoms by strong covalent bonds. These bonds point towards the corners of a tetrahedron and build a rigid three-dimensional network that runs through the whole crystal.