Top 50 Science Quiz, MCQs | btrprep.in | 4 - BTRPREP

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Monday, August 11, 2025

Top 50 Science Quiz, MCQs | btrprep.in | 4

 

Prepare effectively for Assam government competitive exams like APSC, ADRE, TET, B.Ed , and various other recruitment tests with the Top 50 Basic Science MCQs. This comprehensive collection covers Assam’s history all updated and curated to boost your exam success

1. Which gas is mainly responsible for global warming?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Sulphur dioxide
Answer: b) Carbon dioxide
Explanation: Carbon dioxide is a major greenhouse gas contributing to global warming.
2. Ozone layer protects us from:
a) Infrared rays
b) UV rays
c) X-rays
d) Gamma rays
Answer: b) UV rays
Explanation: The ozone layer absorbs most of the Sun’s harmful ultraviolet radiation.
3. Which renewable energy source uses flowing water?
a) Solar energy
b) Hydro power
c) Geothermal energy
d) Biomass
Answer: b) Hydro power
Explanation: Hydropower harnesses energy from the movement of flowing water.
4. What is the main cause of acid rain?
a) CO₂ emissions
b) SO₂ and NOx emissions
c) Methane
d) Ozone depletion
Answer: b) SO₂ and NOx emissions
Explanation: Sulfur dioxide and nitrogen oxides react with water to form acid rain.
5. Which is the largest planet in our solar system?
a) Earth
b) Jupiter
c) Saturn
d) Neptune
Answer: b) Jupiter
Explanation: Jupiter is the largest planet by size and mass in our solar system.
6. India’s first nuclear power plant was set up at:
a) Kalpakkam
b) Tarapur
c) Kakrapar
d) Narora
Answer: b) Tarapur
Explanation: Tarapur Atomic Power Station began operations in 1969 as India’s first nuclear power plant.
7. Which state in India has the largest installed solar power capacity? (as of 2024)
a) Tamil Nadu
b) Rajasthan
c) Gujarat
d) Maharashtra
Answer: b) Rajasthan
Explanation: Rajasthan leads in solar power capacity due to its vast desert areas.
8. The device used to measure earthquake intensity is:
a) Barometer
b) Seismograph
c) Hygrometer
d) Altimeter
Answer: b) Seismograph
Explanation: Seismographs detect and record movements caused by earthquakes.
9. Which mission of ISRO aims to study the Sun?
a) Mangalyaan
b) Aditya-L1
c) Chandrayaan-3
d) Astrosat
Answer: b) Aditya-L1
Explanation: Aditya-L1 is India’s solar mission to study solar corona and solar emissions.
10. The process of converting waste materials into reusable objects is called:
a) Reduction
b) Recycling
c) Recovery
d) Composting
Answer: b) Recycling
Explanation: Recycling involves processing waste to make new products, conserving resources.