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Railway RRB / NTPC - MCQ Practice Questions

Practice <strong>Railway RRB NTPC, Group D, ALP, Junior Engineer, Technician</strong> MCQs covering Mathematics, General Intelligence & Reasoning, General Science, and General Awareness. Aligned with the latest RRB exam syllabus.

418 questions | 100% Free

Q.21Medium

Which element is the most abundant in the Earth's atmosphere?

Q.22Medium

What is the principal source of energy for the Earth?

Q.23Medium

Which of the following is an example of a physical change?

Q.24Medium

In Newton's third law of motion, if object A exerts a force on object B, what does object B do?

Q.25Medium

Which of the following is the largest organ in the human body by mass?

Q.26Medium

What happens to the density of water when it freezes into ice?

Q.27Medium

Which of the following is NOT a type of simple machine?

Q.28Medium

What is the primary component of natural gas?

Q.29Medium

Which blood cell is responsible for carrying oxygen throughout the body?

Q.30Medium

What is the process by which a liquid changes into a solid?

Q.31Medium

Which of the following diseases is caused by a deficiency of Vitamin C?

Q.32Medium

Which of the following is an example of a conductor?

Q.33Medium

What is the percentage of oxygen in the Earth's atmosphere?

Q.34Medium

Which disease is caused by iodine deficiency?

Q.35Medium

What is the SI unit of electrical current?

Q.36Medium

Which planet in our solar system has the most moons?

Q.37Medium

What is the process of conversion of iron into rust primarily called?

Q.38Medium

Which gland produces insulin in the human body?

Q.39Medium

Which of the following best describes the process of photosynthesis?

Q.40Medium

Which of the following is an endothermic reaction?