Which element is essential for human respiration? MCQ with Answer and Explanation

Question

Share Report Error

Which element is essential for human respiration?

A. Helium

B. Carbon Dioxide

C. Nitrogen

D. Oxygen

Answer: Option D

Solution (By JKSSB Mock Tests)

Oxygen is necessary for cellular respiration in the human body.

This question belongs to: Static General Knowledge Science and Technology

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Science and Technology Questions

Question #1

Which planet is commonly referred to as the 'Red Planet'?

A. Mars

B. Venus

C. Jupiter

D. Saturn

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option A

Explanation:
Mars is known as the Red Planet due to the iron oxide on its surface.

This question belongs to: Static General Knowledge Science and Technology

Question #2

Penicillin was discovered by:

A. Louis Pasteur

B. Joseph Lister

C. Alexander Fleming

D. Robert Koch

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option C

Explanation:
Alexander Fleming discovered Penicillin in 1928.

This question belongs to: Static General Knowledge Science and Technology

Question #3

What does CPU stand for in a computer?

A. Control Processing Unit

B. Computer Processing Unit

C. Central Processing Unit

D. Central Power Unit

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option C

Explanation:
CPU is the brain of the computer that performs calculations.

This question belongs to: Static General Knowledge Science and Technology

Explore All Science and Technology MCQs