Life Science Quiz
Practice quiz on Life Science (General Science). 5 real exam questions.
About This Quiz
Life Science Quiz — Questions with Solutions
All 5 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.Which gas is essential for human respiration?
- A.Hydrogen
- B.Carbon dioxide
- C.Oxygen
- D.Nitrogen
Show answer
Answer: C. Oxygen
Humans inhale oxygen for survival.
Q2.Who is known as the ‘Missile Man of India’?
- A.Vikram Sarabhai
- B.Homi Bhabha
- C.APJ Abdul Kalam
- D.C.V. Raman
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Answer: C. APJ Abdul Kalam
Dr. APJ Abdul Kalam is called the Missile Man.
Q3.The pH value of pure water is:
- A.3
- B.5
- C.7
- D.9
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Answer: C. 7
Pure water is neutral.
Q4.Plants prepare their food by the process of:
- A.Respiration
- B.Photosynthesis
- C.Transpiration
- D.Digestion
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Answer: B. Photosynthesis
Photosynthesis makes food in plants.
Q5.Which gas is essential for respiration?
- A.Nitrogen
- B.Oxygen
- C.Hydrogen
- D.Carbon dioxide
Show answer
Answer: B. Oxygen
Humans require oxygen to breathe.
Frequently Asked Questions
Is Life Science Quiz free to attempt on AajExam?
Yes. Life Science Quiz is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.
How long does it take to complete Life Science Quiz?
Life Science Quiz runs on a 1-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.
Are detailed solutions provided?
Yes. Every question on Life Science Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.
Can I attempt Life Science Quiz multiple times?
Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.
Which government exams does this quiz prepare me for?
Life Science questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.