100 Everyday Science Quiz Questions with Answers

 

100 Science Quiz Questions with Answers

1. Which gas do plants use for photosynthesis?

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Ans: C

2. The boiling point of water is:

A) 50°C

B) 100°C

C) 150°C

D) 200°C

Ans: B

3. Which organ pumps blood in our body?

A) Brain

B) Lungs

C) Heart

D) Liver

Ans: C

4. The nearest planet to the Sun is:

A) Earth

B) Venus

C) Mercury

D) Mars

Ans: C

5. Which vitamin do we get from sunlight?

A) Vitamin A

B) Vitamin B

C) Vitamin C

D) Vitamin D

Ans: D

6. Water changes into ice at:

A) 0°C

B) 10°C

C) 50°C

D) 100°C

Ans: A

7. Which part of plant makes food?

A) Root

B) Stem

C) Leaf

D) Flower

Ans: C

8. Human body has how many lungs?

A) One

B) Two

C) Three

D) Four

Ans: B

9. Which gas is needed for burning?

A) Carbon dioxide

B) Oxygen

C) Nitrogen

D) Hydrogen

Ans: B

10. The hardest natural substance is:

A) Gold

B) Iron

C) Diamond

D) Silver

Ans: C

11. Which planet is called the Red Planet?

A) Jupiter

B) Mars

C) Saturn

D) Venus

Ans: B

12. Sound travels fastest in:

A) Air

B) Water

C) Solid

D) Vacuum

Ans: C

13. Which blood group is universal donor?

A) A

B) B

C) AB

D) O

Ans: D

14. The center of atom is called:

A) Electron

B) Proton

C) Neutron

D) Nucleus

Ans: D

15. Which organ helps us to breathe?

A) Heart

B) Brain

C) Lungs

D) Kidney

Ans: C

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16. Which metal is liquid at room temperature?

A) Iron

B) Gold

C) Mercury

D) Copper

Ans: C

17. Plants release which gas?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Ans: A

18. The largest planet is:

A) Earth

B) Mars

C) Jupiter

D) Venus

Ans: C

19. Which organ cleans blood?

A) Heart

B) Kidney

C) Liver

D) Lung

Ans: B

20. The SI unit of force is:

A) Watt

B) Joule

C) Newton

D) Meter

Ans: C

21. Which vitamin helps in blood clotting?

A) Vitamin A

B) Vitamin B

C) Vitamin C

D) Vitamin K

Ans: D

22. Which gas is filled in balloons?

A) Oxygen

B) Helium

C) Carbon dioxide

D) Nitrogen

Ans: B

23. The smallest bone in body is in:

A) Hand

B) Ear

C) Leg

D) Nose

Ans: B

24. Which organ controls body activities?

A) Heart

B) Brain

C) Lung

D) Kidney

Ans: B

25. Which planet has rings?

A) Earth

B) Mars

C) Saturn

D) Mercury

Ans: C

26. Which acid is in lemon?

A) Sulfuric acid

B) Citric acid

C) Hydrochloric acid

D) Nitric acid

Ans: B

27. Which energy comes from Sun?

A) Wind

B) Solar

C) Nuclear

D) Electrical

Ans: B

28. The color of chlorophyll is:

A) Red

B) Blue

C) Green

D) Yellow

Ans: C

29. Which planet is known as Earth’s twin?

A) Mars

B) Venus

C) Mercury

D) Saturn

Ans: B

30. Which mineral is needed for bones?

A) Iron

B) Calcium

C) Zinc

D) Iodine

Ans: B

31. Which gas makes soda fizzy?

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Ans: C

32. The main source of energy on Earth is:

A) Wind

B) Water

C) Sun

D) Coal

Ans: C

33. Which organ helps digestion?

A) Lung

B) Stomach

C) Heart

D) Brain

Ans: B

34. Which metal conducts electricity best?

A) Iron

B) Copper

C) Gold

D) Silver

Ans: D

35. Which planet is farthest from Sun?

A) Earth

B) Mars

C) Neptune

D) Venus

Ans: C

36. Which sense organ helps us see?

A) Ear

B) Nose

C) Eye

D) Tongue

Ans: C

37. The freezing point of water is:

A) 0°C

B) 50°C

C) 100°C

D) 150°C

Ans: A

38. Which gas do humans breathe in?

A) Carbon dioxide

B) Nitrogen

C) Oxygen

D) Hydrogen

Ans: C

39. Which part of flower makes seeds?

A) Root

B) Stem

C) Ovary

D) Leaf

Ans: C

40. Which planet has most moons?

A) Earth

B) Jupiter

C) Mars

D) Venus

Ans: B

41. Which vitamin improves eyesight?

A) A

B) B

C) C

D) D

Ans: A

42. Which metal rusts easily?

A) Gold

B) Iron

C) Copper

D) Silver

Ans: B

43. Which organ stores urine?

A) Kidney

B) Bladder

C) Lung

D) Liver

Ans: B

44. Which part of plant absorbs water?

A) Leaf

B) Root

C) Stem

D) Flower

Ans: B

45. Which planet is known for strong storms?

A) Venus

B) Earth

C) Jupiter

D) Mercury

Ans: C

46. Which acid is in stomach?

A) Nitric acid

B) Sulfuric acid

C) Hydrochloric acid

D) Citric acid

Ans: C

47. Which energy flows in wires?

A) Solar

B) Electrical

C) Wind

D) Heat

Ans: B

48. Which blood cells fight disease?

A) Red

B) White

C) Platelets

D) Plasma

Ans: B

49. Which gas causes global warming?

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Helium

Ans: C

50. Which planet is blue in color?

A) Mars

B) Neptune

C) Venus

D) Mercury

Ans: B

51. The SI unit of temperature is:

A) Celsius

B) Fahrenheit

C) Kelvin

D) Joule

Ans: C

52. The tallest animal in the world is:

A) Elephant

B) Horse

C) Giraffe

D) Camel

Ans: C

53. The main fuel used in rockets is:

A) Oxygen

B) Petrol

C) Hydrogen

D) Coal

Ans: C

54. The organ used for hearing is:

A) Eye

B) Nose

C) Ear

D) Tongue

Ans: C

55. Vitamin C is found in:

A) Milk

B) Apple

C) Orange

D) Bread

Ans: C

56. The Sun is a:

A) Planet

B) Star

C) Moon

D) Asteroid

Ans: B

57. Ice floats on water because it is:

A) Heavier

B) Hot

C) Less dense

D) Salty

Ans: C

58. The largest organ in the human body is:

A) Heart

B) Brain

C) Skin

D) Liver

Ans: C

59. The gas present most in air is:

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Ans: B

60. Plants breathe through:

A) Roots

B) Leaves

C) Stems

D) Stomata

Ans: D

61. The hardest bone in human body is:

A) Leg bone

B) Skull

C) Jaw bone

D) Arm bone

Ans: C

62. The force that pulls things toward Earth is:

A) Friction

B) Magnetism

C) Gravity

D) Pressure

Ans: C

63. Light travels fastest in:

A) Air

B) Water

C) Glass

D) Vacuum

Ans: D

64. The gas used in fire extinguisher is:

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Helium

Ans: C

65. The shape of the Earth is:

A) Flat

B) Square

C) Round

D) Triangle

Ans: C

66. The color of human blood is:

A) Blue

B) Green

C) Red

D) Yellow

Ans: C

67. The Moon has:

A) Air and water

B) Only water

C) No air

D) Forests

Ans: C

68. Energy stored in food is:

A) Heat energy

B) Light energy

C) Chemical energy

D) Sound energy

Ans: C

69. The organ that controls thinking is:

A) Heart

B) Brain

C) Kidney

D) Lung

Ans: B

70. A very hot star looks:

A) Red

B) Yellow

C) White

D) Blue

Ans: D

71. Rain comes from:

A) Rivers

B) Seas

C) Clouds

D) Trees

Ans: C

72. Our galaxy is called:

A) Andromeda

B) Milky Way

C) Orion

D) Solar Way

Ans: B

73. The fuel commonly used in cars is:

A) Coal

B) Diesel

C) Wood

D) Kerosene

Ans: B

74. The metal mostly used in electric wires is:

A) Iron

B) Copper

C) Gold

D) Aluminum

Ans: B

75. The number of bones in adult human body is:

A) 150

B) 186

C) 206

D) 250

Ans: C

76. Acid rain is caused by:

A) Sun heat

B) Water pollution

C) Air pollution

D) Soil erosion

Ans: C

77. Normal human heart beats per minute is about:

A) 40

B) 60

C) 72

D) 100

Ans: C

78. The smallest planet in our solar system is:

A) Mars

B) Venus

C) Mercury

D) Earth

Ans: C

79. Normal human body temperature is:

A) 35°C

B) 36°C

C) 37°C

D) 38°C

Ans: C

80. The main fuel of the Sun is:

A) Oxygen

B) Helium

C) Hydrogen

D) Nitrogen

Ans: C

81. The chemical formula of water is:

A) CO₂

B) H₂O

C) O₂

D) H₂

Ans: B

82. Insects breathe through:

A) Lungs

B) Nose

C) Skin

D) Spiracles

Ans: D

83. Glass is mainly made from:

A) Wood

B) Sand

C) Clay

D) Plastic

Ans: B

84. A rainbow has how many colors?

A) Five

B) Six

C) Seven

D) Eight

Ans: C

85. Vitamin that helps bones grow strong is:

A) A

B) B

C) C

D) D

Ans: D

86. The brain is protected by:

A) Skin

B) Rib cage

C) Skull

D) Backbone

Ans: C

87. The total number of teeth in adult humans is:

A) 28

B) 30

C) 32

D) 34

Ans: C

88. Nerves carry:

A) Blood

B) Oxygen

C) Messages

D) Water

Ans: C

89. The Sun gives us:

A) Ice

B) Energy

C) Smoke

D) Rain

Ans: B

90. Plants need which to make food?

A) Water only

B) Sunlight only

C) Air only

D) Sunlight, water and carbon dioxide

Ans: D

91. A magnet attracts:

A) Wood

B) Plastic

C) Iron

D) Glass

Ans: C

92. Milk is rich in:

A) Iron

B) Calcium

C) Iodine

D) Sodium

Ans: B

93. Wind energy comes from:

A) Water movement

B) Air movement

C) Fire heat

D) Earth rotation

Ans: B

94. Moonlight is:

A) Its own light

B) Fire light

C) Sun’s reflected light

D) Star light

Ans: C

95. Earth takes how much time to rotate once?

A) 12 hours

B) 18 hours

C) 24 hours

D) 48 hours

Ans: C

96. Blood carries:

A) Food only

B) Oxygen only

C) Waste only

D) Oxygen and nutrients

Ans: D

97. Skin helps to:

A) Think

B) Breathe

C) Protect body

D) Pump blood

Ans: C

98. Roots help plants to:

A) Make food

B) Breathe

C) Hold soil

D) Fly

Ans: C

99. Leaves are used to:

A) Drink water

B) Make food

C) Store air

D) Grow seeds

Ans: B

100. Bones give the body:

A) Color

B) Shape

C) Heat

D) Water

Ans: B

101. Hot air always moves:

A) Down

B) Sideways

C) Upward

D) Backward

Ans: C

102. Cold air moves:

A) Up

B) Down

C) Round

D) Fast

Ans: B

103. Fish breathe using:

A) Lungs

B) Nose

C) Gills

D) Skin

Ans: C

104. Birds have hollow bones to:

A) Look big

B) Store food

C) Fly easily

D) Drink water

Ans: C

105. The unit of electricity is:

A) Watt

B) Volt

C) Joule

D) Meter

Ans: B

106. The unit of pressure is:

A) Newton

B) Watt

C) Pascal

D) Volt

Ans: C

107. The unit of light is:

A) Ampere

B) Lumen

C) Kelvin

D) Ohm

Ans: B

108. The unit of power is:

A) Joule

B) Volt

C) Watt

D) Pascal

Ans: C

109. The unit of heat energy is:

A) Kelvin

B) Joule

C) Meter

D) Volt

Ans: B

110. The Sun rises in the:

A) North

B) South

C) East

D) West

Ans: C

100 Science Quiz related FAQs

Q1. What is a science quiz?

A science quiz is a set of questions based on Physics, Chemistry, Biology, and general science. It helps students test their knowledge in a fun and easy way.

Q2. Who can use these science quiz questions?

These science quiz questions are useful for school students, especially for Classes 1 to 10, including CBSE students. Teachers can also use them for class activities.

Q3. Are these science quiz questions with answers useful for exams?

Yes, practicing science quiz questions with answers helps students revise important topics and gain confidence before exams and competitions.

Q4. Are the questions given in MCQ format?

Yes, all the questions are in multiple-choice (MCQ) format, which makes learning simple and helps students understand exam patterns.

Q5. Can beginners understand these science quiz questions easily?

Yes, the questions are written in very simple words, so even beginners can understand them without much difficulty, though few questions may feel little tricky.