RRB Group D 2025 Question Paper (14-Aug-2026) (Shift 3)

Question 1

Why does white light split into different colours when passing through a prism but not when passing through a glass slab?

Accepted Answer

Because a prism has non-parallel sides

Answer

Because a prism is made of a different material

Answer

Because a prism is transparent

Answer

Because a prism is thinner than a slab

Question 2

Which situation demonstrates the correct application of the force formula?

Accepted Answer

A 5 kg object accelerates at 2 m/s squared and a force of 10 N is applied

Answer

A 2 kg object accelerates at 5 m/s squared and a force of 15 N is applied

Answer

A 4 kg object accelerates at 3 m/s squared and a force of 20 N is applied

Answer

A 10 kg object accelerates at 1 m/s squared and a force of 5 N is applied

Question 3

What is the main characteristic of a double displacement reaction?

Accepted Answer

Exchange of ions between reactants

Answer

Breakdown of a compound into simpler substances

Answer

Removal of hydrogen from acid

Answer

Combination of two elements

Question 4

Which of the following statements is true for homogeneous mixtures?

Accepted Answer

The particles of a solution are smaller and cannot be seen with the naked eye.

Answer

The solute particles settle down when it is left undisturbed.

Answer

The components of the mixture can be separated by filtration.

Answer

They show the Tyndall effect.

Question 5

Why is composting considered environmentally beneficial?

Accepted Answer

It converts organic waste into useful manure

Answer

It increases non-biodegradable waste

Answer

It generates biodegradable waste

Answer

It releases toxic gases