RRB Group D 2024 Question Paper (10-Feb-2026) (Shift-3)

Question 1

An object is placed at 80 cm on the left of a convex lens of focal length 40 cm. Where should a screen be placed to right of the lens so that the image formed is real, inverted and same sized?

Accepted Answer

The screen should be placed at 80 cm from the lens.

Answer

The screen should be placed at 40 cm from the lens.

Answer

The screen should be placed anywhere between 20 cm and 40 cm from the lens.

Answer

The screen should be placed anywhere between 40 cm and 80 cm from the lens.

Question 2

When iron filings are mixed with sulfur powder and the mixture is heated, a black substance called iron sulfide is formed. Which statement best describes the changes involved?

Accepted Answer

A chemical change occurs as a new substance is formed.

Answer

A physical change occurs as the substances are only mixed.

Answer

A reversible physical change takes place.

Answer

Iron dissolves in sulfur forming a solution.

Question 3

The kinetic energy of an object of mass $m$ moving with a velocity $v$ is 25 J. What will be its kinetic energy when its velocity is increased three times ($3v$)?

Accepted Answer

225 J

Answer

75 J

Answer

150 J

Answer

125 J

Question 4

The molecular mass of a compound is 63 u. If it contains one hydrogen atom and three oxygen atoms, the atomic mass of the remaining element is :

Accepted Answer

14 u

Answer

16 u

Answer

32 u

Answer

12 u

Question 5

Galvanisation protects iron from rusting by coating it with a thin layer of:

Accepted Answer

Zinc metal only

Answer

Silver metal only

Answer

Nickel metal only

Answer

Copper metal only

RRB Group D 2024 Question Paper (10-Feb-2026) (Shift-3)

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