RRB Group D GK Questions 2026

The troposphere is the lowest layer of the atmosphere, lying right above the Earth's surface, and nearly all weather happens in it.

Dendrites and the axon are the two kinds of processes that grow out of a neuron, the nerve cell that carries messages through the body.

The small intestine is the longest part of the human alimentary canal, about 6 to 7 metres in an adult, which is why it is called the longest organ of the digestive system.

The Kawas Thermal Power Station stands at Kawas near Hazira in the Surat district of Gujarat, on the bank of the Tapi.

Esha Singh took the silver in the women's 25m pistol individual event, while Pinkcy Balhara took the bronze in the women's 78kg kurash event, and both results came on the same day at the Asian Games 2026.

Pinkcy Balhara secured the bronze medal in the women's 78kg class of this sport at the Asian Games, and the Prime Minister said she had displayed tremendous grit and resolve throughout the competition, wishing that she would continue to scale new heights.

Esha Singh finished with the silver medal in this competition at the Asian Games 2026, and the Prime Minister congratulated her the same day, saying that she had put up a great score and had shown immense precision and composure on the range.

Laterite soil is rich in oxides of iron and aluminium, and the iron oxide gives it its red brick colour.

Inertia is the tendency of a body to stay at rest or keep moving in a straight line, and the measure of that tendency is mass.

With an area of only about 32 square kilometres, Lakshadweep is the smallest Union Territory of India. It is a group of 36 coral islands in the Arabian Sea, of which only ten are inhabited, and its capital is Kavaratti.

The new service runs between Machilipatnam and Kurnool City by way of Vijayawada on South Coast Railway, and that is the distance the train covers between the two ends.

The stretch is only 6 km long but it carries high-grade iron ore and pellets from the Bolani mines of SAIL and from private sidings towards steel plants and ports, and the doubling has been cleared at a completion cost of 122 crore rupees.

The Varanasi division, abbreviated BSB, belongs to this zone, and the sanction of 223 crore rupees extends Kavach 4.0 across the balance sections of that division, a total of 614.75 route kilometres.

In a suspension the particles of the solute are large enough to be seen and do not dissolve; they stay spread through the liquid only while it is stirred and settle to the bottom when it is left standing.

Johann Wolfgang Dobereiner, a German chemist, grouped elements of similar properties in sets of three that he called triads. His rule was that the atomic mass of the middle element is about the average of the other two.

Spirogyra is a green filamentous alga found in ponds, and when its filament grows long it simply breaks into two or more pieces.

A tissue is a group of cells that come from the same source, look alike and work together at one job.

Carbon occurs in nature in two ways, free and combined. In the free state the element stands alone, as in diamond, graphite and coal; diamond is pure carbon whose atoms are each joined to four others in a rigid three dimensional network, which is why it is the hardest natural…

The brain is divided into fore-brain, mid-brain and hind-brain, and the fore-brain is the main thinking part. Its largest portion is the cerebrum, whose folded outer layer holds separate areas for hearing, sight, smell and touch, for reasoning and memory, and for ordering voluntary movement.

Early Indian thinkers held that everything in the world is made of five basic elements, the panchamahabhuta: earth, water, fire, air and space or ether.