RRB Group D GK Questions 2026

It is a reduction division: one parent cell with the full, diploid set gives four cells with half the number of chromosomes, the haploid set.

Water behaves unlike most liquids between 0 and 4 degrees Celsius, a behaviour called the anomalous expansion of water. Almost every substance shrinks as it is cooled, but water shrinks only until it reaches 4 degrees Celsius.

Malleability is the property by which a metal can be beaten into thin sheets without breaking, which is how aluminium foil and the sheets used in car bodies are made.

A binary number is written with only the digits 0 and 1, and each place stands for a power of two.

Human beings are ureotelic, which means the main nitrogen waste they pass out is urea. When the body breaks down extra amino acids, ammonia is produced, and ammonia is highly poisonous even in small amounts.

Blood is filtered in the glomerulus of the nephron, and the filtrate that first enters the tubule still holds many useful substances.

A ligament is the connective tissue that joins one bone to another at a joint. It is very elastic and strong, and it holds the bones in place so that a joint can move without the bones slipping apart.

Abscisic acid is the one plant hormone in this list that slows growth instead of speeding it up, which is why it is often called the stress hormone of plants.

Testosterone is made by the Leydig cells of the testes and is the main male sex hormone.

White blood cells are usually about 8 to 20 micrometres across, larger than red cells but not in the range given here.

The Pradhan Mantri Ujjwala Yojana was launched on 1 May 2016 at Ballia in Uttar Pradesh. It is run by the Ministry of Petroleum and Natural Gas and gives a free LPG connection, with a deposit-free cylinder and a fitted regulator, to women of poor households.

The Third Battle of Panipat was fought on 14 January 1761 between the Marathas, led by Sadashivrao Bhau with Vishwasrao, and the Afghan ruler Ahmad Shah Abdali, who was helped by Najib-ud-Daulah of Rohilkhand and Shuja-ud-Daulah of Awadh.

The Kakrapar Atomic Power Station stands near Vyara in the Tapi district of Gujarat, on the bank of the Tapi river, and is run by the Nuclear Power Corporation of India Limited.

Gases move across the cell membrane by diffusion, the spread of particles from a region where they are more concentrated to a region where they are less concentrated.

The Nizam of Hyderabad was the first Indian ruler to accept the Subsidiary Alliance, signing the treaty with Lord Wellesley in 1798, the year Wellesley took charge as Governor-General.

Birdie and eagle are scoring terms used in golf. Every hole on a golf course is given a par, the number of strokes a good player is expected to take on it.

Arteries are the blood vessels that carry blood away from the heart to the different parts of the body. Because the heart pushes blood into them under high pressure, arteries have thick, muscular and elastic walls and no valves, and they are placed deep in the body.

Sodium benzoate is the sodium salt of benzoic acid and is the preservative most often added to sauces, salad dressings, jams, pickles and soft drinks.

Permanent tissues are made of cells that have stopped dividing and have taken on a fixed shape, size and function, and in simple permanent tissues such as parenchyma the loosely packed cells leave clear intercellular spaces through which gases can move.

The Netherlands keeps Amsterdam as its constitutional capital, but the seat of government, the parliament, the residence of the monarch and the supreme court are all at The Hague.