RRB NTPC Science and Technology Basics

Question 1

Which instrument is used to measure atmospheric pressure?

Accepted Answer

Barometer

Answer

Thermometer

Answer

Hygrometer

Answer

Anemometer

Question 2

The chemical formula of common salt (table salt) is:

Accepted Answer

NaCl

Answer

KCl

Answer

CaCl₂

Answer

MgCl₂

Question 3

The speed of light in vacuum is approximately:

Accepted Answer

3 × 10⁸ m/s

Answer

3 × 10⁶ m/s

Answer

3 × 10¹⁰ m/s

Answer

3 × 10¹² m/s

Question 4

Which vitamin is produced by the human body when exposed to sunlight?

Accepted Answer

Vitamin D

Answer

Vitamin A

Answer

Vitamin B12

Answer

Vitamin C

Question 5

Newton's First Law of Motion is also known as the Law of:

Accepted Answer

Inertia

Answer

Gravitation

Answer

Acceleration

Answer

Action-Reaction

Question 6

DNA stands for:

Accepted Answer

Deoxyribonucleic Acid

Answer

Deoxyribose Nucleic Acid

Answer

Double-helix Nucleic Acid

Answer

Dioxynucleic Acid