RRB Group D GK Questions 2026

Genuine currency notes carry security features printed with fluorescent inks that glow only under ultraviolet light, so a UV lamp quickly exposes a fake.

When magnesium burns, magnesium loses electrons and is oxidised, while oxygen gains them and is reduced, so oxidation and reduction happen together.

A light year is the distance that light travels through a vacuum in one year, so despite the word year it measures length, not time.

Mica is a non-metallic mineral, a silicate that splits into thin, clear, flexible sheets, and no metal is extracted from it.

A freely pivoted magnetic needle turns to line up with any magnetic field around it, so its deflection shows that a field is present and which way it points.

Without oxygen, yeast carries out alcoholic fermentation, breaking glucose into ethanol and carbon dioxide and gaining a little ATP. Glucose is first split into two molecules of pyruvate by glycolysis, which yields a net gain of two ATP.

Borax is sodium tetraborate decahydrate, Na2B4O7·10H2O, so it contains only sodium, boron, oxygen and hydrogen. Its chemical name is sodium tetraborate, and the ten molecules of water of crystallisation supply the hydrogen and part of the oxygen.

When ice melts it only changes from solid to liquid; the substance is still water, so it is a physical change.

Ribosomes make proteins, a job every living cell must do, so they are present in both prokaryotic and eukaryotic cells.

The branch office of the Cotton Corporation of India there identified 511 items of electronic waste for disposal through an e-auction on the Government e-Marketplace, with the bids to be opened in the fourth week of the month.

The drive is conducted through that month under the Department of Administrative Reforms and Public Grievances, and it is meant both to speed up the disposal of pending matters and to improve cleanliness in government offices.

It is the nodal department for Special Campaign 6, fixing targets activity by activity and collecting what each ministry achieves, and the photographs taken before and after each cleanliness drive are uploaded to its portal.

She won the gold at the Commonwealth Games held in Delhi in 2010, the first Indian woman wrestler to do so, and she was also the first Indian woman wrestler to qualify for the Olympic Games, at London in 2012.

It is the highest sporting honour conferred by the Government of Haryana on outstanding sportspersons of the state, and it sits alongside the cash awards and the reservation of government posts that make up the sports policy of Haryana.

She belongs to Haryana and won a silver medal in the shot put at the Rio Paralympics of 2016, becoming the first Indian woman to win a medal at the Paralympic Games; she went on to become president of the Paralympic Committee of India and has received the Padma Shri.…

Sumit Antil of Khewra village in Sonipat district competes in the javelin throw in the F64 class, won the gold at the Tokyo Paralympics and defended it at Paris, breaking the world record in the class along the way.

She comes from Goria village in Jhajjar district and won two bronze medals at the Paris Olympics, one in the individual ten metre air pistol and one in the ten metre air pistol mixed team event, which made her the first Indian athlete since independence to win two medals at…

Known as the Haryana Hurricane, he played his domestic cricket for Haryana, led India to the World Cup in 1983 and captained the state side to its Ranji Trophy title in the season of 1990 and 1991, which remains the great achievement of Haryana cricket.

Shahabad Markanda, a small town in Kurukshetra district, is called the nursery of Indian women hockey; Rani Rampal, who captained the national team and has received both the Major Dhyan Chand Khel Ratna and the Padma Shri, learnt the game on its astroturf, and the former men team captain and…

He comes from Nahri village in Sonipat district and won the silver medal in the 57 kg freestyle class at the Tokyo Olympics, losing only the final; his silver was the better of the two wrestling medals India won at those Games.