Assam Grade 3 and 4 Exam Important Questions and Answers 

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GENERAL SCIENCE:

1.Which planet is called blue planet?

Ans: Earth.

2. Which planet is called Earth’s twin?

Ans; Venus.

3. Which planet is called ‘Lord of Heavens’?

Ans; Jupiter.

4. which planet is called as Red planet?

Ans: Mars.

5. Which Galaxy is nearest to our Milky Way galaxy?

Ans: Andromeda.

6. Which is the second largest planet of our solar system after Jupiter?

Ans: Saturn.

7. What is the source of energy of sun?

Ans: Fusion of Hydrogen and Helium.

8. Which planet has no satellite?

Ans: Mercury and Venus.

9. Which comet appears every 76 years?

Ans: Hailey’s comet (Last appeared in 1986).

10. The branch of science which deals with the study of heart is called?

Ans: Cardiology.

11. The brance of science which deals with the study of internal organ is called?

Ans: Anatomy.

12. The brance of science which deals with the study of heavenly bodies is called?

Ans: Astronomy.

13. The brance of science which deals with the study of insects is called?

Ans: Entomology

14: The brance of science which deals with the study of skin is called?

Ans: Dermatology.

15. The brance of science which deals with the study of birds is called?

Ans: Ornithology.

16. What is the average life span of RBCs?

Ans: 120 Days.

17. The AIDS is caused by which virus?

Ans: HIV Virus.

18. The instrument which is used to measure the height in Aircrafts is called?

Ans: Altimeter.

19. The instrument which is used to measure the humidity in air is called?

Ans: Hygrometer.

20. The instrument which is used to measure the purity of milk is called?

Ans: Lactometer.

21. The instrument which is used to measure the atmospheric pressure is called?

Ans: Barometer.

Assam Grade 3 and 4 Exam Important Questions and Answers

22. Who discovered Battery?

Ans: A. Volta.

23. Who discovered Radio?

Ans: G. Macrconi.

23. Who discovered Telephone?

Ans: Alexander Graham Bell.

24. Who discovered X-ray?

Ans: W. Roentgen.

25. Who discovered steam engine?

Ans: James Watt.

26. Who discovered Bicycle?

Ans: Mackmillan.

27. Who discovered Diesel engine?

Ans: Rudolf Diesel.

28. Who discovered Electric bulb?

Ans: Thomas Alva Edison.

29. Who discovered Radium?

Ans: Marie Curie and Pierre Curie.

Assam Grade 3 and 4 Exam Important Questions and Answers

30. Citric acid is found in which fruit?

Ans: Lemons.

31. Vinegar contains which acid?

Ans: Acetic acid.

33. Which acid has an important role in digestion?

Ans: Hydrochloric acid.

34. What is the normal human body temperature?

Ans: 37 Degree Centigrade.

35. What is the Ph of human blood?

Ans: 7.4 (slightly basic).

36. Which gas is called ‘stranger gas’?

Ans: Xenon gas.

37. Which is the heaviest gas in the world?

Ans: Radon Gas.

38. Which is called ‘white gold’?

Ans: Platinum.

39. Which is the heaviest element?

Ans: Osmium (Os).

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Assam Grade 3 and 4 Exam Important Questions and Answers

40. Which pigment is responsible for human body colour?

Ans: Melanin.

41. Ozone hole is clearly visible from which continent?

Ans: Antartica (Winter season).

42. Who is called the father of Genetics?

Ans: Gregor J. Mendel.

43. Who discovered Nucleus?

Ans: Robert Brown.

44. Who discovered Cell?

Ans: Robert Hooke.

45. What is the total number of chromosomes in human?

Ans: 46.

46. Which is the largest internal organ in human body?

Ans: Liver.

47. What is the major excretory product in human?

Ans: Urea.

48. What is the full form of HIV?

Ans: Human Immunodeficiency Virus.

49. The disease which is caused due to Iodine deficiency in food is called?

Ans: Goitre.

50. What is the full form of ATP in Biology?

Ans: Adenosine Tri Phosphate.

51. What is the chemical name of Vitamin A?

Ans: Retinol.

52. What is the chemical name of vitamin B1?

Ans: Thiamine.

53. What is the chemical name of vitamin C?

Ans: Ascobic acid.

54. What is the chemical name of vitamin E?

Ans: Tocopherol.

55. What is the chemical name of vitamin D?

Ans: Calciferol.

56. What is the chemical name of vitamin K?

Ans: Phylloquinone.

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