science gk questions in hindi|general science question answer REET,RAILWAY,MP POLICE part-9 ~ Studyzone001 by Rahul Arora

science gk questions in hindi|general science question answer REET,RAILWAY,MP POLICE part-9 ~ Studyzone001 by Rahul Arora

In today’s post we general science gk Very important questions are about to be read. all these science gk questions competitive examinations (MPTET, MP Police, REET, Railway, SSC etc.) is very important.

If there is doubt in any question, then comment.

science gk questions in hindi|general science question answer REET,RAILWAY,MP POLICE part-9
science gk in hindi

Science GK Question Answer | general science questions in hindi

1. In which part of the human body does ‘pyorrhea’ occur? in teeth and gums

2. On what principle does rocket propulsion work? , momentum conservation

3. What is momentum? , vector quantity

4. What is the rate of doing work called? , power

5. What is the unit of power? , Wait!

6. On what principle does the ball pen work? , surface tension

7. Why is the shape of a raindrop spherical? , due to surface tension

8. Which mirror is used to see the rear view in vehicles? , convex mirror

9. Which mirror is used for shaving? , concave mirror

10.Which mirror is used by the dentist? , concave mirror

11. The working of radar is based on the following principle – reflection of radio waves

12. On which principle does the laser work? diffraction ignition emission

13. What is the number of vibrations that a particle makes in one second called? , frequency

14. Of which material are the IC chips of the computer made? , silicone

15. What is the boiling point of water? , 100 °C

16. What is the number of amino acids in the human body? , 20

17. What is the instrument used to measure the intensity of the sun’s rays called? , Actinometer

18. On which part of the eye does the human eye form the image of the object? , on the retina

19. Which part of the eye is transplanted in eye donation? , cornea

20. Which part of the eye controls the amount of light entering the eye? , iris

21. What is the minimum distance of clear vision for a healthy eye? , 25 cm

22. What is the resolving power of the eye? , 1′ (1 minute)

23. How does the sky appear to astronauts? , black

24. What is dry ice? , solid carbon dioxide

25. Which gas discolors the flowers? , chlorine gas

Also read about:-

, Science GK Questions Part – 8

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