Science Quiz
Practice quiz on Science (General Knowledge). 10 exam-style questions with explanations.
About This Quiz
Science Quiz — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.The unit of force is
- A.Joule
- B.Pascal
- C.Watt
- D.Newton
Show answer
Answer: D. Newton
Newton.
Q2.The chemical symbol of gold is
- A.Au
- B.Fe
- C.Ag
- D.Gd
Show answer
Answer: A. Au
Au.
Q3.The gas used in balloons is
- A.Oxygen
- B.Carbon dioxide
- C.Helium
- D.Nitrogen
Show answer
Answer: C. Helium
Helium.
Q4.Sound cannot travel through
- A.Air
- B.Steel
- C.Vacuum
- D.Water
Show answer
Answer: C. Vacuum
Needs a medium.
Q5.The pH of pure water is
- A.14
- B.7
- C.1
- D.0
Show answer
Answer: B. 7
Neutral.
Q6.The centre of an atom is the
- A.Nucleus
- B.Orbit
- C.Electron
- D.Shell
Show answer
Answer: A. Nucleus
Nucleus.
Q7.The speed of light is about
- A.3 x 10^10 m/s
- B.3 x 10^3 m/s
- C.3 x 10^8 m/s
- D.3 x 10^5 m/s
Show answer
Answer: C. 3 x 10^8 m/s
c.
Q8.Water boils at ___ at sea level.
- A.80 degrees
- B.90 degrees
- C.110 degrees
- D.100 degrees Celsius
Show answer
Answer: D. 100 degrees Celsius
100.
Q9.The most abundant gas in the atmosphere is
- A.CO2
- B.Argon
- C.Nitrogen
- D.Oxygen
Show answer
Answer: C. Nitrogen
78%.
Q10.Which blood group is the universal donor?
- A.B positive
- B.O negative
- C.A positive
- D.AB positive
Show answer
Answer: B. O negative
O-.
Frequently Asked Questions
Is Science Quiz free to attempt on AajExam?
Yes. 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 Science Quiz?
Science Quiz runs on a 10-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 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 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?
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.