Railway GK Questions 2026

The fair is its marketing-support initiative for artisans and beneficiaries tied to its three national corporations: the National Scheduled Castes Finance and Development Corporation, the National Safai Karamcharis Finance and Development Corporation and the National Backward Classes Finance and Development Corporation.

Swavlamban started that year and has since grown into a national platform that joins the Indian Navy’s operational requirements to what Indian industry and academia can actually build.

Both are to be released at the plenary session, where the Raksha Mantri is the chief guest, and both are intended as working references for industry: they set out the Indian Navy’s technological priorities, its operational requirements and the openings where indigenous developers can contribute.

The wording matters for an examination, because a paper setter will pair the theme with the edition number and the venue.

Swavlamban is the Navy’s own Naval Innovation and Indigenisation Seminar, and the name of the event itself points to naval innovation.

Explaining what real-time source apportionment means, Dr Jitendra Singh pointed to a screen showing that at that moment transport was contributing roughly 25 per cent of the air pollution in Delhi, while the overall pollution level stood at around 180.

AIRWISE, the Air Quality Warning and Integrated Decision Support System for Emissions, issues air-quality forecasts at a spatial resolution of 400 metres for the following 72 hours.

The laboratory has been established under Mission Mausam, announced by Prime Minister Narendra Modi, to deepen the scientific understanding of atmospheric pollution and to supply usable evidence for managing air quality in Delhi NCR.

That is the full form of AATAL, the facility inaugurated for Delhi NCR by Dr Jitendra Singh at the Delhi branch of the Indian Institute of Tropical Meteorology.

For a swinging pendulum, the component of the bob's weight along its path always pulls it back towards the lowest point, so gravity acts as a restoring force.

A shoot grows upward, away from the pull of gravity, so it is negatively geotropic. A tropism is a directional growth movement of a plant part in response to a stimulus: towards the stimulus is positive, away from it is negative.

An object floats when its average density is less than that of the liquid and sinks when it is greater.

Specific heat is a property of the material, not of the size or shape of the particular body. It is the amount of heat needed to raise the temperature of unit mass (1 kg or 1 g) of a substance by one degree.

X-rays have wavelengths of roughly 0.01 to 10 nanometres, and a typical value is about one ångström (1 Å = 10⁻¹⁰ m = 0.1 nm).

Ice is simply water in its solid state, a single compound with the fixed formula H2O, so it is a pure substance, not a mixture.

Vegetable oils are hardened into margarine and vanaspati ghee by hydrogenation. Liquid vegetable oils are unsaturated: their fatty-acid chains contain carbon-carbon double bonds.

This matches the reactivity series, which lists metals from the most to the least reactive. Sodium is near the top: it reacts violently with cold water and is stored under kerosene.

Temporary hardness is caused by the bicarbonates (hydrogencarbonates) of calcium and magnesium dissolved in water. It is called temporary because it can be removed simply by boiling: on heating, the soluble bicarbonates break down into insoluble carbonates, or magnesium hydroxide, which settle out, and carbon dioxide escapes.

Quick lime is calcium oxide (CaO), which contains no carbonate, so it gives no carbon dioxide with an acid. Acids release carbon dioxide only from carbonates and hydrogencarbonates: the general reaction is metal carbonate plus acid gives salt, water and carbon dioxide.

Plaster of Paris is made from gypsum, not from common salt. When gypsum, calcium sulphate dihydrate (CaSO4·2H2O), is heated to about 373 K, it loses part of its water and becomes calcium sulphate hemihydrate (CaSO4·½H2O), which is Plaster of Paris; it sets hard again when mixed with water and is…