CDS GK Questions 2026

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

In Koppen's scheme for India, most of the Ganga plain falls in the Cwg type: a monsoon climate with a dry winter.

Heat from the Earth's interior sets up slow convection currents in the mantle, and these drag the rigid plates resting on it.

Lead nitrate breaks down only when it is heated strongly, so the reaction absorbs heat and is endothermic. On heating, lead nitrate gives lead oxide, brown fumes of nitrogen dioxide and oxygen: 2Pb(NO3)2 → 2PbO + 4NO2 + O2.

Underlining that connectivity underpins shared prosperity, the Raksha Mantri said India supports initiatives that link markets, make trade easier and open fresh avenues for development, and he named these two as able to contribute significantly to connecting Central Asia with wider markets.

The Raksha Mantri welcomed the decisions taken at the SCO Summit at Bishkek to set up two permanent bodies of the organisation, and the Anti-Drug Centre is the one to be based at Dushanbe.

Speaking at the meeting, the Raksha Mantri reaffirmed India's support for adopting an Action Plan for the Multilateral Trade and Economic Cooperation Programme for exactly that span, and the plan went on to form part of the Joint Communique that the heads of delegation adopted.

The correct answer is Dushanbe, the capital of Tajikistan, where the 25th Meeting of the Council of Heads of Government of the Shanghai Cooperation Organisation was held, with the Raksha Mantri speaking for India.

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.

He was Viceroy from 1926 to 1931, which covers the Dandi March of 1930.

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.

He patented the flying shuttle in England in 1733. The flying shuttle let a single weaver send the thread across the loom by pulling a cord, so wider cloth could be woven much faster.

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.

The Equator and the Prime Meridian both lie on circles whose centre is the centre of the Earth.

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.