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General Science and technology MCQ questions for BPSC, UPSC, SSC Exams 2025.

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30 General Science and Technology MCQ Questions for BPSC, UPSC, SSC Exams 2025

If you’re preparing for competitive exams, these 30 General Science and Technology MCQ questions for BPSC, UPSC, SSC Exams 2025 will help you strengthen your knowledge. Science and technology play a crucial role in these exams, covering topics from physics, chemistry, biology, space science, and recent advancements. In this post, we have carefully selected multiple-choice questions, including some from previous year papers and others based on the latest syllabus. Let’s test your knowledge and boost your preparation!

General Science and Technology MCQs for BPSC, UPSC, SS

Section 1: Physics MCQs

1. What is the SI unit of force?
   a) Joule
   b) Pascal
   c) Newton
   d) Watt
2. Which mirror is used in vehicle rear-view mirrors?
   a) Concave mirror
   b) Convex mirror
   c) Plane mirror
   d) Parabolic mirror
3. Hydrometer is an instrument used to measure:
   a) Air pressure
   b) Density of liquids
   c) Speed of sound
   d) Altitude of an object
4. The time period of a simple pendulum depends on:
   a) Mass of the bob
   b) Length of the string
   c) Amplitude of oscillation
   d) Both a and b
5. What type of waves are sound waves?
   a) Longitudinal waves
   b) Transverse waves
   c) Electromagnetic waves
   d) None of the above
6. Which of the following is a vector quantity?
   a) Speed
   b) Work
   c) Force
   d) Distance
7. The force exerted by a fluid on an object submerged in it is called:
   a) Gravitational force
   b) Centripetal force
   c) Buoyant force
   d) Magnetic force
8. The acceleration due to gravity on the Moon is approximately:
   a) 9.8 m/s²
   b) 4.5 m/s²
   c) 1.6 m/s²
   d) 0 m/s²
9. What does an electric motor convert?
   a) Mechanical energy to electrical energy
   b) Electrical energy to mechanical energy
   c) Chemical energy to heat energy
   d) Light energy to heat energy
10. A rainbow is formed due to:
    a) Reflection only
    b) Refraction and dispersion
    c) Scattering and diffraction
    d) Interference of light

Section 2: Chemistry MCQs

11. The most abundant gas in the Earth’s atmosphere is:
    a) Oxygen
    b) Nitrogen
    c) Carbon dioxide
    d) Hydrogen
12. The atomic number of an element represents:
    a) Number of electrons
    b) Number of protons
    c) Number of neutrons
    d) None of the above
13. Which metal is used in making the filament of an electric bulb?
    a) Copper
    b) Tungsten
    c) Aluminium
    d) Silver
14. The chemical formula of baking soda is:
    a) NaCl
    b) K₂CO₃
    c) NaHCO₃
    d) Ca(OH)₂
15. Rusting of iron is an example of:
    a) Reduction
    b) Oxidation
    c) Neutralization
    d) Sublimation
16. The pH value of human blood is around:
    a) 5.5
    b) 7.4
    c) 9.2
    d) 11.5
17. Which gas is the main component of LPG (Liquefied Petroleum Gas)?
    a) Methane
    b) Butane
    c) Ethylene
    d) Hydrogen
18. The hardest naturally occurring substance is:
    a) Graphite
    b) Diamond
    c) Quartz
    d) Iron
19. Which vitamin is also known as ascorbic acid?
    a) Vitamin A
    b) Vitamin C
    c) Vitamin D
    d) Vitamin K
20. Which noble gas is used in balloons and airships?
    a) Neon
    b) Helium
    c) Argon
    d) Xenon

Section 3: Biology MCQs

21. Which organ in the human body filters blood?
    a) Liver
    b) Kidney
    c) Heart
    d) Lungs
22. Which organelle is known as the powerhouse of the cell?
    a) Nucleus
    b) Mitochondria
    c) Ribosome
    d) Golgi apparatus
23. Plants absorb nitrogen mainly in the form of:
    a) Nitrogen gas
    b) Nitrate
    c) Ammonia
    d) Nitrite
24. Which part of the brain controls balance and coordination?
    a) Cerebrum
    b) Cerebellum
    c) Medulla oblongata
    d) Hypothalamus
25. Which vitamin helps in blood clotting?
    a) Vitamin A
    b) Vitamin C
    c) Vitamin E
    d) Vitamin K

Section 4: Technology & Space Science MCQs

26. Who is known as the “Father of the Computer”?
    a) Alan Turing
    b) Charles Babbage
    c) John von Neumann
    d) Bill Gates
27. RAM stands for:
    a) Read Access Memory
    b) Random Access Memory
    c) Read Application Memory
    d) Random Application Memory
28. When was India’s Chandrayaan-3 mission launched?
    a) 2019
    b) 2020
    c) 2023
    d) 2024
29. What was the first artificial satellite launched into space?
    a) Apollo 11
    b) Sputnik 1
    c) Explorer 1
    d) Chandrayaan 1
30. The James Webb Space Telescope primarily observes in which wavelength?
    a) Ultraviolet
    b) Infrared
    c) X-ray
    d) Microwave

Here are the answers to the 30 General Science and Technology MCQ Questions for BPSC, UPSC, SSC Exams 2025:

Section 1: Physics MCQs

1. (c) Newton
2. (b) Convex mirror
3. (b) Density of liquids
4. (b) Length of the string
5. (a) Longitudinal waves
6. (c) Force
7. (c) Buoyant force
8. (c) 1.6 m/s²
9. (b) Electrical energy to mechanical energy
10. (b) Refraction and dispersion

Section 2: Chemistry MCQs

11. (b) Nitrogen
12. (b) Number of protons
13. (b) Tungsten
14. (c) NaHCO₃
15. (b) Oxidation
16. (b) 7.4
17. (b) Butane
18. (b) Diamond
19. (b) Vitamin C
20. (b) Helium

Section 3: Biology MCQs

21. (b) Kidney
22. (b) Mitochondria
23. (b) Nitrate
24. (b) Cerebellum
25. (d) Vitamin K

Section 4: Technology & Space Science MCQs

26. (b) Charles Babbage
27. (b) Random Access Memory
28. (c) 2023
29. (b) Sputnik 1
30. (b) Infrared