RRB Group D GK Questions 2026

The ministry described BHARAT-TULIP as a key focus of the Guwahati mela, an initiative that takes the products of artisans from the target groups to buyers through physical outlets as well as e-commerce platforms.

The Ministry of Social Justice and Empowerment announced that the eight-day Shilp Samagam Mela 2026 would begin in Guwahati, the capital of Assam, running until Wednesday, 28 October, with the venue at Farm Gate in Khanapara and visiting hours from 11 in the morning to 9 at night.

Phloem sieve tubes are not like xylem vessels: sieve tubes are living cells with thin walls and sieve plates, while mature xylem vessels are dead, hollow tubes with thick lignified walls.

Arteries have the thickest walls of all blood vessels, not the thinnest, because they carry blood away from the heart under high pressure.

A fluid at rest presses on the walls and has pressure at every point, but that pressure is not the same at all depths.

Zero on the Kelvin scale lies 273.15 degrees below the freezing point of water. The Kelvin and Celsius scales have degrees of the same size, so T(K) = t(°C) + 273.15.

Nitrogen and oxygen combine only when a lot of energy is supplied. The nitrogen molecule is held by a very strong triple bond, so breaking it takes much energy, and the reaction N₂ + O₂ → 2NO absorbs heat.

Hydrogen adds across the carbon–carbon double bonds of the oil. Vegetable oils are unsaturated: their fatty acid chains contain C=C double bonds, which keep them liquid.

The charge moves exactly opposite to the field, and a magnetic field exerts no force on a charge moving along its line.

It takes most force to start an object moving, less to keep it sliding and least to keep it rolling.

Urea, CO(NH₂)₂, has a molar mass of 60 g, of which 28 g is nitrogen and 4 g is hydrogen.

Mature human red blood cells lose these organelles as they develop. Red blood cells are made in the red bone marrow and push out their nucleus and other organelles before entering the blood.

The slightest push makes the ball fall off and it does not come back. A body is in unstable equilibrium when a small displacement lowers its centre of gravity, so the forces acting on it move it further away instead of back.

It is a carbon compound with a carboxyl group, so it is an organic acid. Acetic acid (ethanoic acid, CH₃COOH) contains the –COOH group typical of carboxylic acids.

Soaps are sodium or potassium salts of long-chain carboxylic (fatty) acids, not ammonium salts. A soap molecule has a long hydrocarbon tail that mixes with oil and an ionic head that faces water.

Diamond and crystalline silicon have the same crystal structure. Isomorphous means having the same crystal form.

Both quantities change with temperature, and resistance is directly proportional to resistivity, while resistivity does not depend on the wire’s size.

The restoring force on the bob is mg sin θ. For small angles sin θ is almost equal to θ, so the force becomes proportional to the displacement and points back towards the mean position.

Myopia is short-sightedness: near objects look sharp but distant ones look blurred. In a myopic eye the eyeball is too long or the eye lens is too curved, so light from a distant object comes to a focus in front of the retina instead of on it.

Rain is called acid rain when its pH falls below 5.6. Even clean rain is slightly acidic, because carbon dioxide in the air dissolves in it and forms weak carbonic acid, which brings its pH down to about 5.6.