Science question and answer in hindi

Science question and answer

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1. Breeding and management of bees is called?

Answer: Apiculture

2. Is vitamin helpful in blood clotting?

Answer: K

3. A mixture of calcium aluminate and calcium silicate is called?

Answer: Cement

4. Does citrus occur in fruits?

Answer: citric acid

5. What is the unit of work?

Answer: Joule

6. By what name is chloro-fluoro carbon?

Answer: Freon

7. The only acid that dissolves gold?

Answer: Aqua Regia

8. Considered the pioneer of modern atomic theory?

Answer: John Dalton

9. What kind of teeth are used to cut apple with teeth?

Answer: Rodent

10. Which two colors are mixed together to form a green color?

Answer: Orange and Purple

11. What does RNA mean?

Answer: Ribo Nucleic Acid

12. What is the movement of pendulum?

Answer: oscillation speed

13. What percentage of the total gases present in the atmosphere is nitrogen?

Answer: 78%

14. Which doctors use in examining patients

Answer: Stethoscope

15. Malaria is related

Answer: From fever

16. The hormone that controls blood sugar level is

Answer: Insulin

17. Plaster of mortar made using calcium hydroxide is known by what name?

Answer: Lime water

18. What is called green matter of leaves, which is helpful in photosynthesis?

Answer: Chlorophyll

19. Brass becomes discolored due to the presence of which gas in the air?

Answer: Oxygen

20. Whose unit is 'bar'?

Answer: atmospheric pressure

21. Conversion of matter from solid to vapor state is called

Answer: Sublimation

22. Silver becomes discolored due to the formation of its layer

Answer: Sulfide layer

23. Causes of Smallpox

Answer: Virus

24. SI unit of resistance is

Answer: Om

25. The busiest human organ is

Answer: Heart

26. Common and used baking soda in bakery is actually

Answer: Sodium Bicarbonate

27. is the unit of heredity

Answer: Gene

28. Discovered the law of heredity

Answer: Gregory Mandel

29. Cell membrane is found

Answer: In both plant and animal cells

30. Permanent hardness of water can be removed

Answer: By adding potassium permanganate

31. Maximum water density is

Answer: At 4 ° C

32. Which is used to correct myopia?

Answer: Concave lens

33. The largest artery in the human body is

Answer: Aorta

34. The largest natural satellite in the solar system is

Answer: Ganymede

35. In which part of body is iodine stored?

Answer: Thyroid gland

36. What is the nucleus of a plane mirror?

Answer: Everlasting

37. Sound intensity depends on

Answer: Dimensions

38. Which stimulant is present in tea

Answer: Caffeine

39. Filaria disease is caused by

Answer: Worm

40. Human urine is

Answer: acidic