RRB Group D 2025 Question Paper (21-Aug-2026) (Shift 3)

Question 1

A student claims that a stationary object has kinetic energy because it has mass. Evaluate this statement.

Accepted Answer

The statement is incorrect because kinetic energy requires motion

Answer

The statement is correct only for objects on Earth

Answer

The statement is incorrect because only energy in motion counts as potential energy

Answer

The statement is correct because all objects with mass have kinetic energy

Question 2

A technician wants to decrease the magnetic effect around a current-carrying wire without changing the wire's material or environment. Which method should be used?

Accepted Answer

Reduce the amount of current flowing through the wire

Answer

Increase the length of the wire used

Answer

Change the wire's path to a straight line

Answer

Make the wire thinner without changing the current

Question 3

How do micelles enable soaps to function effectively in cleaning oily stains from clothes?

Accepted Answer

They surround and trap non-polar substances, making them soluble in water

Answer

They chemically break down oily molecules into polar fragments that can evaporate easily.

Answer

They coat the fabric surface with a hydrophobic layer that prevents water from sticking.

Answer

They increase the pH of water so that oils form solid precipitates that can be washed away.

Question 4

Which products are always formed during a complete neutralization chemical reaction?

Accepted Answer

Salt and water

Answer

Metal and gas

Answer

Hydrogen gas and salt

Answer

Acid and base

Question 5

Considering the versatility of carbon, which scenario most accurately represents its role in environmental science?

Accepted Answer

Formation of carbon dioxide in respiration

Answer

Formation of magnesium oxide in rocks

Answer

Formation of sodium carbonate in water

Answer

Use of calcium carbonate in bones

RRB Group D 2025 Question Paper (21-Aug-2026) (Shift 3)

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