RRB Group D 2025 Question Paper (6-Aug-2026) (Shift 3)

Question 1

A student is analyzing digestive systems in different invertebrates. Which structural change allows efficient, one-way food processing and waste elimination?

Accepted Answer

Development of two body openings

Answer

Presence of body segmentation

Answer

Acquisition of bilateral symmetry

Answer

Evolution of feeding tentacles

Question 2

Which method effectively prevents corrosion by blocking contact with air and moisture?

Accepted Answer

Applying paint or protective coating

Answer

Exposing metal to sunlight

Answer

Heating metal at high temperature

Answer

Mixing metal with water

Question 3

Which of the following facts about cellular respiration is INCORRECT?

Accepted Answer

Anaerobic respiration in yeast produces water as a major end product.

Answer

The first step of glucose breakdown takes place in the cytoplasm.

Answer

Anaerobic respiration in yeast produces ethanol and carbon dioxide.

Answer

Anaerobic respiration occurs in the absence of oxygen.

Question 4

A student places a convex lens in sunlight and notices a small bright spot forms on a paper held below the lens. What property of the lens allows this to happen?

Accepted Answer

The lens focuses parallel rays to a single point

Answer

The lens diverges the rays in all directions

Answer

The lens only works for colored light

Answer

The lens blocks all rays from passing through

Question 5

Which of the following metals is usually extracted from its ore by electrolytic reduction?

Accepted Answer

Aluminium

Answer

Zinc

Answer

Copper

Answer

Iron

RRB Group D 2025 Question Paper (6-Aug-2026) (Shift 3)

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