RRB Group D 2024 Question Paper PDF (27-Dec-2025) (Shift 2)

Question 1

Which property most definitively distinguishes a suspension from a colloid?

Accepted Answer

Settling of particulates under gravitational force

Answer

Homogeneity of the mixture

Answer

Absence of light scattering under illumination

Answer

Formation of covalent solute-solvent bonds

Question 2

What happens to biodegradable substances when they are released in the environment?

Accepted Answer

They get broken down into simpler components.

Answer

They deplete the ozone layer.

Answer

They persist forever.

Answer

They get converted into toxic chemicals.

Question 3

The process of seed dispersal helps in:

Accepted Answer

colonising new habitats

Answer

forming new flowers on the same plant

Answer

increasing seed size

Answer

promoting self-pollination

Question 4

What is the purpose of enrichment of ore before extraction?

Accepted Answer

To remove impurities

Answer

To convert it into salt

Answer

To remove moisture

Answer

To increase weight

Question 5

According to the right-hand thumb rule, if the thumb points in the direction of current, then the fingers show:

Accepted Answer

direction of magnetic field lines

Answer

direction of electric force

Answer

direction of resistance

Answer

direction of voltage