RRB Group D GK Questions 2026

Insulin lets glucose leave the blood and enter body cells, especially muscle and fat cells, and so it lowers the blood sugar level.

The SA node, a small patch of special muscle in the wall of the right atrium, produces the electrical impulse that starts each heartbeat, which is why it is called the pacemaker of the heart.

When iron(III) oxide is heated with aluminium powder, aluminium takes away the oxygen, and the reaction gives out so much heat that the iron produced is molten: Fe2O3 + 2Al → 2Fe + Al2O3 + heat.

The railways works with it on moving coal out of the mines efficiently, while its coordination with the Ministry of Power is about sustaining transport and supply so that thermal plants hold enough stock to generate reliably.

This was the average daily dispatch of coal rakes to thermal power plants over the first six months of the financial year, and it was 7.1 per cent higher than the dispatch rate in the corresponding half of the year before.

That is the growth the railways registered in coal loading during the month up to the eighteenth day, measured against the corresponding stretch of the previous year, and it amounts to an all-time high for coal loading.

The two won the bronze medal in the Mixed Doubles SL3-SU5 event, and their teamwork, determination and competitive spirit through the tournament were singled out in the Prime Minister's message.

Two Indians stood on the podium in that class, Abhijeet Sakhuja, who reached it on his first appearance at the Games, and Suhas L. Yathiraj, and both of them took bronze.

She won bronze in the Women's Singles SU5 event, a bronze medal for the second consecutive edition of the Games, and then won a second bronze in the Mixed Doubles SL3-SU5 event alongside Pramod Bhagat, which gave her two medals on the same day.

Kwashiorkor is a disease of protein deficiency in a child who still gets enough calories. It usually appears when a child is weaned from breast milk onto a starchy diet with little protein.

Arranged from most acidic to most basic, the four substances fall in exactly this order. Lemon juice, rich in citric acid, has a pH of about 2 to 2.5.

The Research Design and Standards Organisation (RDSO) is the sole research and development wing of the Ministry of Railways. RDSO is headquartered at Lucknow.

The programme, launched on 15 August 1995 and now renamed the Pradhan Mantri Samajik Sahayata Yojana, gives effect to Article 41, which directs the State to provide public assistance in cases of unemployment, old age, sickness and disablement.

Section 2(r) of that Act defines a person with benchmark disability as one with not less than 40 per cent of a specified disability, as certified by the certifying authority, and the Cabinet decision of 14 October 2026 brings the pension on to that measure.

The Union Cabinet, chaired by the Prime Minister, approved this outlay on 14 October 2026 when it cleared the continuation of the National Social Assistance Programme for five years and renamed it the Pradhan Mantri Samajik Sahayata Yojana.

In this chain each organism is eaten by the next: grass, a producer, is eaten by the goat, a herbivore, and the goat is eaten by humans, so energy passes in a straight line.

Scurvy is caused by a lack of vitamin C, or ascorbic acid, which the body needs to make collagen, the protein that holds skin, gums and blood vessels together.

NCERT's Class 10 chemistry chapter on acids, bases and salts states that our body works within the narrow pH range of 7.0 to 7.8, which is slightly basic.

The bronchi only carry air between the windpipe and the lungs; their walls are too thick for oxygen and carbon dioxide to pass into the blood, so no gas exchange happens there.

Sunlight takes about 8 minutes and 20 seconds, roughly 500 seconds, to travel from the Sun to the Earth. The average distance between the Sun and the Earth is about 150 million kilometres, a distance called one astronomical unit.