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Mathematics and Science Quiz

Free practice quiz on Mathematics and Science Quiz with detailed solutions for government exam preparation.

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About This Quiz

Mathematics and Science Quiz is a free, 25-minute, 25-mark practice quiz on AajExam rated at easy difficulty, designed to help candidates preparing for SSC, UPSC, Banking, Railway and State PSC government competitive exams sharpen their command of Mathematics & Science Basics (Mathematics and Science). Every question on this quiz ships with a detailed step-by-step solution so you don't just learn the right answer — you learn the reasoning and shortcuts top scorers use to crack similar questions faster on the actual exam day. Why Mathematics and Science Quiz matters in your preparation: government exam-conducting bodies repeatedly draw questions from the same chapters and the same skill-clusters across recruitment cycles. By attempting focused topic-wise quizzes like this one, you build pattern recognition — the ability to spot which formula, rule or trick applies the moment you see a question. Toppers consistently report that 5-10 quizzes on a single topic delivers more exam-day score gain than 20+ unfocused full-length mocks, because targeted drilling exposes your specific sub-topic weaknesses with surgical precision. How to use this quiz effectively: attempt it in one sitting under the 25-minute timer, without referring to notes or external resources — simulate exam-day conditions exactly. After submission, review the auto-generated analytics to see your accuracy, time per question and section-wise performance. Then go through every wrong and skipped question with the explanation, mentally tagging the underlying concept rather than just memorising the answer. Revisit this quiz after 7-10 days; your second attempt should be 15-20% faster with noticeably better accuracy. Bookmark this page and revisit weekly as we add new quizzes on related topics. AajExam quiz design principles: every quiz on the platform is curated by subject experts using the actual question formats, difficulty distributions and time pressures of the target government exams. We deliberately avoid generic "textbook" questions in favour of exam-replicating ones. Solutions are written in plain English (and Hindi where source material was bilingual), with step-by-step working for quantitative problems, grammar rules for English questions, and direct reference statements for general awareness items. Performance analytics after each attempt include accuracy, attempt rate, time spent per question, and an estimated all-India percentile so you know exactly where you stand against other candidates. This quiz is completely free to attempt. You only need a free AajExam account to track your performance across attempts, view detailed solutions and unlock the platform-wide analytics dashboard. The platform is mobile-friendly and works seamlessly on smartphones, tablets and desktops — so you can sharpen your Mathematics & Science Basics (Mathematics and Science) skills in any spare 15-minute window.

Mathematics and Science Quiz — Questions with Solutions

All 25 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.

  1. Q1.What is the sum of the angles in a triangle?

    • A.90 degrees
    • B.180 degrees
    • C.270 degrees
    • D.360 degrees
    Show answer

    Answer: B. 180 degrees

    The sum of interior angles of any triangle is always 180 degrees.

  2. Q2.What is 12 multiplied by 12?

    • A.124
    • B.134
    • C.144
    • D.154
    Show answer

    Answer: C. 144

    12 x 12 = 144.

  3. Q3.Which of the following is a prime number?

    • A.21
    • B.23
    • C.25
    • D.27
    Show answer

    Answer: B. 23

    23 is divisible only by 1 and itself, making it prime.

  4. Q4.Water boils at what temperature at sea level in Celsius?

    • A.90 degrees C
    • B.100 degrees C
    • C.110 degrees C
    • D.120 degrees C
    Show answer

    Answer: B. 100 degrees C

    Water boils at 100 degrees Celsius at standard atmospheric pressure.

  5. Q5.What is the chemical formula of common salt?

    • A.NaCl
    • B.KCl
    • C.CaCl2
    • D.NaOH
    Show answer

    Answer: A. NaCl

    Common salt (sodium chloride) has the formula NaCl.

  6. Q6.What is the value of pi (approximately)?

    • A.3.14
    • B.2.14
    • C.4.14
    • D.1.14
    Show answer

    Answer: A. 3.14

    Pi is approximately equal to 3.14.

  7. Q7.Which planet is closest to the Sun?

    • A.Venus
    • B.Mercury
    • C.Earth
    • D.Mars
    Show answer

    Answer: B. Mercury

    Mercury is the closest planet to the Sun.

  8. Q8.What is the square root of 81?

    • A.8
    • B.9
    • C.10
    • D.11
    Show answer

    Answer: B. 9

    9 x 9 = 81, so the square root of 81 is 9.

  9. Q9.The process by which plants make food is called:

    • A.Respiration
    • B.Photosynthesis
    • C.Digestion
    • D.Excretion
    Show answer

    Answer: B. Photosynthesis

    Photosynthesis is the process by which green plants make their own food.

  10. Q10.What is 15% of 100?

    • A.10
    • B.15
    • C.20
    • D.25
    Show answer

    Answer: B. 15

    15% of 100 is 15.

  11. Q11.Which gas do humans need to breathe to survive?

    • A.Oxygen
    • B.Carbon dioxide
    • C.Nitrogen
    • D.Hydrogen
    Show answer

    Answer: A. Oxygen

    Humans need oxygen for respiration.

  12. Q12.What is the perimeter of a square with side 5 cm?

    • A.15 cm
    • B.20 cm
    • C.25 cm
    • D.30 cm
    Show answer

    Answer: B. 20 cm

    Perimeter of a square = 4 x side = 4 x 5 = 20 cm.

  13. Q13.The Earth revolves around the Sun in approximately how many days?

    • A.30 days
    • B.365 days
    • C.100 days
    • D.500 days
    Show answer

    Answer: B. 365 days

    The Earth takes approximately 365 days to orbit the Sun.

  14. Q14.What is the sum of 25 and 37?

    • A.52
    • B.62
    • C.72
    • D.82
    Show answer

    Answer: B. 62

    25 + 37 = 62.

  15. Q15.Which organ in the human body pumps blood?

    • A.Lungs
    • B.Heart
    • C.Kidney
    • D.Liver
    Show answer

    Answer: B. Heart

    The heart pumps blood throughout the human body.

  16. Q16.What is 100 divided by 4?

    • A.20
    • B.25
    • C.30
    • D.35
    Show answer

    Answer: B. 25

    100 divided by 4 equals 25.

  17. Q17.Which of the following is a mammal?

    • A.Whale
    • B.Shark
    • C.Crocodile
    • D.Frog
    Show answer

    Answer: A. Whale

    A whale is a mammal, despite living in water.

  18. Q18.What is the area of a rectangle with length 8 cm and breadth 5 cm?

    • A.30 sq cm
    • B.35 sq cm
    • C.40 sq cm
    • D.45 sq cm
    Show answer

    Answer: C. 40 sq cm

    Area = length x breadth = 8 x 5 = 40 sq cm.

  19. Q19.The Sun is primarily composed of which two gases?

    • A.Hydrogen and Helium
    • B.Oxygen and Nitrogen
    • C.Carbon dioxide and Oxygen
    • D.Nitrogen and Helium
    Show answer

    Answer: A. Hydrogen and Helium

    The Sun is composed mainly of hydrogen and helium.

  20. Q20.What is 9 squared?

    • A.18
    • B.72
    • C.81
    • D.90
    Show answer

    Answer: C. 81

    9 squared (9x9) equals 81.

  21. Q21.Which of the following is a source of Vitamin C?

    • A.Orange
    • B.Milk
    • C.Rice
    • D.Meat
    Show answer

    Answer: A. Orange

    Oranges are a rich source of Vitamin C.

  22. Q22.Find the missing number: 2, 4, 6, 8, ?

    • A.9
    • B.10
    • C.12
    • D.14
    Show answer

    Answer: B. 10

    This is a simple even-number series increasing by 2.

  23. Q23.Which force keeps planets in orbit around the Sun?

    • A.Gravity
    • B.Magnetism
    • C.Friction
    • D.Electricity
    Show answer

    Answer: A. Gravity

    Gravity is the force that keeps planets orbiting the Sun.

  24. Q24.What is the LCM of 3 and 4?

    • A.6
    • B.9
    • C.12
    • D.15
    Show answer

    Answer: C. 12

    The least common multiple of 3 and 4 is 12.

  25. Q25.Which of these is a renewable source of energy?

    • A.Solar energy
    • B.Coal
    • C.Petroleum
    • D.Natural gas
    Show answer

    Answer: A. Solar energy

    Solar energy is renewable, unlike fossil fuels.

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Frequently Asked Questions

Is Mathematics and Science Quiz free to attempt on AajExam?

Yes. Mathematics and 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 Mathematics and Science Quiz?

Mathematics and Science Quiz runs on a 25-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 Mathematics and 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 Mathematics and 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?

Mathematics & Science Basics 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.