RRB Group D 2024 Question Paper (08-Jan-2026) (Shift-2)

Question 1

What is the primary safety function of the green insulated earth wire in a domestic circuit, particularly for metallic appliances?

Accepted Answer

To provide a low-resistance path to ensure leakage current keeps the appliance potential to that of the earth, preventing severe shocks

Answer

To act as the neutral wire when the black wire fails

Answer

To provide a high-resistance path to divert excess current into the ground

Answer

To stabilise the voltage at 220 V

Question 2

The simple permanent tissue that provides mechanical support and flexibility to plant parts such as stems and tendrils is ________.

Accepted Answer

collenchyma

Answer

sclerenchyma

Answer

xylem

Answer

parenchyma

Question 3

Which of the following determine the size of an atom?

Accepted Answer

Electron Clouds

Answer

Protons

Answer

Nucleus

Answer

Neutrons

Question 4

Match the following columns.Column A (Situation)Column B (Effect)A. Acid rain1. Occurs when pH < 5.5 in mouthB. Indigestion2. Antacids neutralise excess acidC. Tooth decay3. pH < 5.6 harms aquatic lifeD. Bee sting4. Neutralised by baking soda

Accepted Answer

A-3; B-2; C-1; D-4

Answer

A-4; B-3; C-2; D-1

Answer

A-2; B-4; C-1; D-3

Answer

A-1; B-2; C-3; D-4

Question 5

Why are autotrophs placed at the first trophic level in a food chain?

Accepted Answer

Because they manufacture food from inorganic substances

Answer

Because they feed on herbivores

Answer

Because they consume organic waste materials

Answer

Because they decompose dead organisms

RRB Group D 2024 Question Paper (08-Jan-2026) (Shift-2)

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Column A (Situation)	Column B (Effect)
A. Acid rain	1. Occurs when pH < 5.5 in mouth
B. Indigestion	2. Antacids neutralise excess acid
C. Tooth decay	3. pH < 5.6 harms aquatic life
D. Bee sting	4. Neutralised by baking soda