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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.61Medium

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

Q.62Medium

What is the primary component of natural gas?

Q.63Medium

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

Q.64Medium

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

Q.65Medium

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

Q.66Hard

At what temperature do Celsius and Fahrenheit scales show the same reading?

Q.67Hard

What is the half-life of Carbon-14, which is used in radioactive dating?

Q.68Hard

Which of the following correctly represents the order of electromagnetic spectrum from lowest to highest frequency?

Q.69Easy

Which of the following is a renewable source of energy?

Q.70Easy

Which acid is present in the human stomach?

Q.71Easy

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

Q.72Easy

Which gas is used for respiration by most organisms?

Q.73Medium

Which of the following is an example of a conductor?

Q.74Medium

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

Q.75Medium

Which disease is caused by iodine deficiency?

Q.76Medium

What is the SI unit of electrical current?

Q.77Medium

Which planet in our solar system has the most moons?

Q.78Medium

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

Q.79Medium

Which gland produces insulin in the human body?

Q.80Hard

What is the focal length of a plane mirror?