RRB Group D 2025 Question Paper (14-Aug-2026) (Shift 1)

Question 1

A student accidentally spills a small amount of dilute sulfuric acid on the laboratory bench and neutralises it with sodium bicarbonate.Which product confirms that a neutralization reaction has occurred?

Accepted Answer

Formation of carbon dioxide and salt

Answer

Formation of hydrogen gas

Answer

Formation of metal oxide

Answer

Formation of oxygen gas

Question 2

Why can humans NOT hear the sound produced by a bat?

Accepted Answer

The frequency of bat sounds is above 20,000 Hz.

Answer

The sound travels only in water.

Answer

The frequency of bat sounds is below 20 Hz.

Answer

The sound is too loud for humans.

Question 3

Which of the following organs is most commonly affected by smoking tobacco products?

Accepted Answer

Lungs

Answer

Intestine

Answer

Brain

Answer

Pancreas

Question 4

When an object is placed at 2F1 of a convex lens, where is the image formed?

Accepted Answer

At 2F2

Answer

Between F2 and 2F2

Answer

At infinity

Answer

At F2

Question 5

A student classifies animals in a diagram by both activity time (day/night) and visible characteristics. Which statement best shows what combining these criteria demonstrates about scientific classification?

Accepted Answer

It allows for multiple perspectives

Answer

It always focuses on genetics

Answer

It creates unique groups

Answer

It eliminates overlaps

RRB Group D 2025 Question Paper (14-Aug-2026) (Shift 1)

RRB Group D Mock Test Series 2026 (Latest Pattern)

RRB Group D Mock Test Series

General Intelligence and Reasoning Mock Test for Railways Exams