Science MCQs with Answers – Class 6 to 10 Level Practice

 

60+ Science MCQs with Answers – Practice Test for Students

This post contains more than 60 important science multiple choice questions (MCQs) with answers. These questions are designed for students of Classes 6 to 10 and are perfect for school quizzes, Olympiads, NTSE, NEET foundation, and general science practice.

 

1. Water boils at:
a) 90°C b) 100°C c) 110°C
Answer: b

2. Which planet is known as the Red Planet?
a) Earth b) Jupiter c) Mars
Answer: c

3. Which gas is essential for breathing?
a) Carbon dioxide b) Nitrogen c) Oxygen
Answer: c

4. Which part of the plant makes food?
a) Root b) Leaf c) Stem
Answer: b

5. Which of these is a conductor of electricity?
a) Wood b) Plastic c) Copper
Answer: c

6. The hardest substance in the human body is:
a) Bone b) Enamel c) Skin
Answer: b

7. The sun is a:
a) Planet b) Star c) Satellite
Answer: b

8. How many bones are in the adult human body?
a) 206 b) 210 c) 201
Answer: a

9. Which of these is a non-renewable resource?
a) Solar energy b) Coal c) Wind
Answer: b

10. What is H₂O commonly known as?
a) Salt b) Oxygen c) Water
Answer: c

11. Which vitamin is produced by sunlight?
a) Vitamin A b) Vitamin D c) Vitamin C
Answer: b

12. Which organ pumps blood in the body?
a) Liver b) Brain c) Heart
Answer: c

13. Which gas do plants absorb during photosynthesis?
a) Oxygen b) Carbon dioxide c) Nitrogen
Answer: b

14. What force pulls objects to the Earth?
a) Magnetism b) Gravity c) Friction
Answer: b

15. Sound travels fastest in:
a) Air b) Water c) Solid
Answer: c

16. Which planet is closest to the Sun?
a) Earth b) Mercury c) Mars
Answer: b

17. Which body part helps in breathing?
a) Lungs b) Heart c) Brain
Answer: a

18. Which disease is caused by mosquito bite?
a) Malaria b) Cancer c) Diabetes
Answer: a

19. What is the boiling point of water in Fahrenheit?
a) 100°F b) 212°F c) 98.6°F
Answer: b

20. Which of these is a simple machine?
a) Bulb b) Pulley c) Engine
Answer: b

21. What is the unit of electricity?
a) Watt b) Liter c) Meter
Answer: a

22. Which sense organ helps us to smell?
a) Eye b) Ear c) Nose
Answer: c

23. Which part of the plant absorbs water?
a) Stem b) Root c) Leaf
Answer: b

24. Which of these is an insulator?
a) Iron b) Glass c) Silver
Answer: b

25. What do bees collect from flowers?
a) Honey b) Nectar c) Pollen
Answer: b

26. Which gas is used for photosynthesis?
a) CO₂ b) O₂ c) H₂
Answer: a

27. Which metal is liquid at room temperature?
a) Gold b) Mercury c) Aluminum
Answer: b

28. What gives blood its red color?
a) Platelets b) Hemoglobin c) Plasma
Answer: b

29. The largest planet in the solar system is:
a) Earth b) Jupiter c) Saturn
Answer: b

30. Which of these is not a greenhouse gas?
a) Oxygen b) Methane c) CO₂
Answer: a

31. How many legs does an insect have?
a) 6 b) 8 c) 10
Answer: a

32. What is the function of white blood cells?
a) Carry oxygen b) Fight infection c) Clot blood
Answer: b

33. Which nutrient is responsible for growth?
a) Carbohydrate b) Protein c) Fat
Answer: b

34. Which blood group is known as universal donor?
a) AB+ b) O− c) A+
Answer: b

35. What is the powerhouse of the cell?
a) Nucleus b) Mitochondria c) Cytoplasm
Answer: b

36. Which part of the brain controls balance?
a) Cerebrum b) Cerebellum c) Medulla
Answer: b

37. Which animal is a reptile?
a) Frog b) Snake c) Whale
Answer: b

38. Which planet has rings?
a) Earth b) Mars c) Saturn
Answer: c

39. Which mineral is required for strong bones?
a) Iron b) Calcium c) Zinc
Answer: b

40. Which organ filters blood in the human body?
a) Liver b) Kidney c) Heart
Answer: b

41. Which of these is a communicable disease?
a) Cancer b) Diabetes c) Tuberculosis
Answer: c

42. What is the normal human body temperature?
a) 100°F b) 98.6°F c) 101°F
Answer: b

43. The study of weather is called:
a) Geology b) Meteorology c) Ecology
Answer: b

44. Which gas is filled in balloons?
a) Oxygen b) Helium c) Nitrogen
Answer: b

45. Which part of the eye controls light entry?
a) Retina b) Iris c) Cornea
Answer: b

46. Which vitamin is good for eyesight?
a) Vitamin A b) Vitamin D c) Vitamin B
Answer: a

47. What is the main source of energy on Earth?
a) Moon b) Sun c) Wind
Answer: b

48. What is the chemical formula for salt?
a) HCl b) NaCl c) KCl
Answer: b

49. Which blood cells help in clotting?
a) RBC b) WBC c) Platelets
Answer: c

50. What causes tides in the ocean?
a) Wind b) Moon’s gravity c) Earthquake
Answer: b

51. What is Newton famous for?
a) Theory of relativity b) Gravity c) Atomic theory
Answer: b

52. Which is the largest organ of the human body?
a) Liver b) Skin c) Lung
Answer: b

53. Which metal is used in thermometers?
a) Copper b) Mercury c) Aluminum
Answer: b

54. Which gas is released during photosynthesis?
a) Oxygen b) CO₂ c) Nitrogen
Answer: a

55. What is used to measure temperature?
a) Thermometer b) Barometer c) Hygrometer
Answer: a

56. What is the main component of air?
a) Oxygen b) Nitrogen c) Carbon dioxide
Answer: b

57. What is the source of silk?
a) Sheep b) Silkworm c) Plant
Answer: b

58. What is needed for rusting of iron?
a) Air and water b) Sunlight and air c) Water and heat
Answer: a

59. Which organ controls the entire body?
a) Liver b) Brain c) Heart
Answer: b

60. Which of these is a vertebrate?
a) Earthworm b) Fish c) Ant
Answer: b