Top Class 8 Science GK Questions in English – Boost Your Knowledge Today!

Looking for the best Class 8 Science GK Questions in English? Check out these important and frequently asked science general knowledge questions for Class 8 students to improve your knowledge and score better!

Class 8 Science GK Questions in English

🔬 Important Class 8 Science GK Questions in English

1. What is the basic unit of life?

👉 Answer: Cell

2. Which organ in the human body purifies blood?

👉 Answer: Kidney

3. What gas do plants absorb from the atmosphere?

👉 Answer: Carbon dioxide

4. Which planet is known as the 'Red Planet'?

👉 Answer: Mars

5. What is H₂O commonly known as?

👉 Answer: Water

6. Who discovered gravity?

👉 Answer: Sir Isaac Newton

7. What is the chemical formula of salt?

👉 Answer: NaCl

8. What part of the plant conducts photosynthesis?

👉 Answer: Leaf

9. Which force pulls objects toward the Earth?

👉 Answer: Gravitational force

10. What is the hardest natural substance on Earth?

👉 Answer: Diamond

🧪Class 8 Science GK Questions in English – Chemistry Questions

11. What is the pH value of pure water?

👉 Answer: 7

12. Which element is used in making pencils?

👉 Answer: Graphite

13. What is the name of the acid found in vinegar?

👉 Answer: Acetic acid

14. What gas is released when acid reacts with metal?

👉 Answer: Hydrogen gas

15. What is the process of water changing into vapor called?

👉 Answer: Evaporation

16. What is the chemical formula of common salt?

👉 Answer: NaCl

17. Which gas is most abundant in the Earth's atmosphere?

👉 Answer: Nitrogen

18. Which metal is liquid at room temperature?

👉 Answer: Mercury

19. Which acid is present in lemon?

👉 Answer: Citric acid

20. What is the chemical symbol for gold?

👉 Answer: Au

21. What is the hardest natural substance on Earth?

👉 Answer: Diamond

22. What is the main gas found in the air we breathe?

👉 Answer: Nitrogen

23. What is the process called when a solid directly changes into gas?

👉 Answer: Sublimation

24. What element do all acids release in water?

👉 Answer: Hydrogen ions (H⁺)

25. What is the basic unit of matter?

👉 Answer: Atom

26. Which gas is necessary for combustion?

👉 Answer: Oxygen

27. What is the chemical formula for water?

👉 Answer: H₂O

28. Which metal is the best conductor of electricity?

👉 Answer: Silver

29. What do we call the process of rusting of iron?

👉 Answer: Oxidation

30. Name the metal that is used for making aircrafts because it is light.

👉 Answer: Aluminium

🌱 Class 8 Science GK Questions in English – Biology Questions

31. What is the basic unit of life?

👉 Answer: Cell

32. Which part of the plant conducts photosynthesis?

👉 Answer: Leaf

33. Which organ pumps blood throughout the body?

👉 Answer: Heart

34. What is the process by which plants make their food?

👉 Answer: Photosynthesis

35. Which pigment gives plants their green color?

👉 Answer: Chlorophyll

36. What is the powerhouse of the cell?

👉 Answer: Mitochondria

37. Which system in our body helps in movement?

👉 Answer: Muscular system

38. What is the name of the tissue that transports water in plants?

👉 Answer: Xylem

39. Which part of the brain controls balance and posture?

👉 Answer: Cerebellum

40. What do we call animals that eat only plants?

👉 Answer: Herbivores

41. Which gas do plants absorb during photosynthesis?

👉 Answer: Carbon dioxide

42. What is the name of the process in which an organism makes a copy of itself?

👉 Answer: Reproduction

43. Which organ helps fish to breathe underwater?

👉 Answer: Gills

44. What type of blood cells help in fighting diseases?

👉 Answer: White blood cells (WBCs)

45. What is the name of the largest organ in the human body?

👉 Answer: Skin

46. Which vitamin is produced when sunlight falls on the skin?

👉 Answer: Vitamin D

47. What is the process of shedding old skin called?

👉 Answer: Moulting

48. Which part of the plant grows underground?

👉 Answer: Root

49. What is the name of the longest bone in the human body?

👉 Answer: Femur

50. Which organism is known as the "king of the jungle"?

👉 Answer: Lion

🌍 Class 8 Science GK Questions in English - Environmental Science

51. What is the main source of energy for the Earth?

👉 Answer: Sun

52. What do we call the thin layer of air around the Earth?

👉 Answer: Atmosphere

53. Which gas is responsible for global warming?

👉 Answer: Carbon dioxide

54. What do plants release during photosynthesis?

👉 Answer: Oxygen

55. What is the natural home of an animal called?

👉 Answer: Habitat

56. What are animals that live both on land and in water called?

👉 Answer: Amphibians

57. What is the term for cutting down of forests?

👉 Answer: Deforestation

58. Which layer of the atmosphere protects us from harmful UV rays?

👉 Answer: Ozone layer

59. What is the practice of growing trees called?

👉 Answer: Afforestation

60. What kind of pollution is caused by loud sounds?

👉 Answer: Noise pollution

61. What do we call the variety of different types of life on Earth?

👉 Answer: Biodiversity

62. Which renewable energy source uses wind to generate electricity?

👉 Answer: Wind energy

63. What do we call rain that is polluted by harmful gases?

👉 Answer: Acid rain

64. Name one non-renewable source of energy.

👉 Answer: Coal

65. What is the term for saving and protecting the environment?

👉 Answer: Conservation

66. Which gas do humans need for breathing?

👉 Answer: Oxygen

67. What is the term for materials that can be broken down naturally by microorganisms?

👉 Answer: Biodegradable

68. What is the process of reusing waste materials called?

👉 Answer: Recycling

69. What type of pollution is caused by throwing garbage into rivers?

👉 Answer: Water pollution

70. What is the main cause of soil erosion?

👉 Answer: Deforestation

71. Name one greenhouse gas other than carbon dioxide.

👉 Answer: Methane

72. What is the term for planting crops and raising animals?

👉 Answer: Agriculture

73. Which type of energy is obtained from the heat inside the Earth?

👉 Answer: Geothermal energy

74. What is the water cycle process where water falls to Earth called?

👉 Answer: Precipitation

75. Which day is celebrated worldwide as Earth Day?

👉 Answer: 22nd April

🔭 Class 8 Science GK Questions in English- Physics GK Questions

76. What is the force that pulls objects toward the Earth?

👉 Answer: Gravity

77. What is the unit of force?

👉 Answer: Newton (N)

78. What type of energy is possessed by a moving object?

👉 Answer: Kinetic energy

79. What is the speed of light in vacuum?

👉 Answer: 3 × 10⁸ m/s

80. Which instrument is used to measure temperature?

👉 Answer: Thermometer

81. What is the S.I. unit of temperature?

👉 Answer: Kelvin (K)

82. What is the reflection of sound called?

👉 Answer: Echo

83. Which simple machine consists of a wheel with a rope around it?

👉 Answer: Pulley

84. What is the S.I. unit of work?

👉 Answer: Joule (J)

85. Which energy is stored in a stretched rubber band?

👉 Answer: Potential energy

86. What type of lens is used in a magnifying glass?

👉 Answer: Convex lens

87. What is the force that opposes motion called?

👉 Answer: Friction

88. Which phenomenon causes a pencil to look bent in water?

👉 Answer: Refraction

89. What is the rate of doing work called?

👉 Answer: Power

90. Which device is used to see distant objects clearly?

👉 Answer: Telescope

91. What is the S.I. unit of power?

👉 Answer: Watt (W)

92. What kind of mirror is used in a car’s rearview mirror?

👉 Answer: Convex mirror

93. What is the energy change in an electric motor?

👉 Answer: Electrical energy to mechanical energy

94. What is the phenomenon of splitting light into seven colors called?

👉 Answer: Dispersion

95. What is a push or pull on an object called?

👉 Answer: Force

96. What is the unit of electric current?

👉 Answer: Ampere (A)

97. What kind of materials allow electricity to pass through them easily?

👉 Answer: Conductors

98. Which property of sound determines how loud or soft it is?

👉 Answer: Amplitude

99. What type of circuit has only one path for current flow?

👉 Answer: Series circuit

100. What is the energy stored in an object due to its position called?

👉 Answer: Potential energy

🧫 Class 8 Science GK Questions in English- Biology GK Questions – Advanced Level for Class 8

101. Which organelle is known as the "control center" of the cell?

👉 Answer: Nucleus

102. What is the process by which plants lose water through their leaves?

👉 Answer: Transpiration

103. What is the smallest bone in the human body?

👉 Answer: Stapes (in the ear)

104. Which blood cells help in clotting of blood?

👉 Answer: Platelets

105. What type of joint is found in the shoulder and hip?

👉 Answer: Ball and socket joint

106. What is the term for animals that feed on dead organisms?

👉 Answer: Scavengers

107. Which structure connects muscles to bones?

👉 Answer: Tendons

108. Name the process by which cells obtain energy by breaking down food.

👉 Answer: Cellular respiration

109. What is the sugar present in milk called?

👉 Answer: Lactose

110. Which part of the neuron receives messages?

👉 Answer: Dendrite

111. What are the thread-like structures in the nucleus that carry genetic information?

👉 Answer: Chromosomes

112. Which disease is caused by deficiency of Vitamin C?

👉 Answer: Scurvy

113. What type of blood circulation occurs between heart and lungs?

👉 Answer: Pulmonary circulation

114. What are organisms called that can make their own food?

👉 Answer: Autotrophs

115. Name the largest artery in the human body.

👉 Answer: Aorta

116. Which hormone regulates blood sugar levels?

👉 Answer: Insulin

117. Which part of the plant contains seeds?

👉 Answer: Fruit

118. What is the outermost layer of the skin called?

👉 Answer: Epidermis

119. What pigment gives blood its red color?

👉 Answer: Hemoglobin

120. What is the organ responsible for filtering blood in humans?

👉 Answer: Kidney

121. What is the name of the process where a caterpillar becomes a butterfly?

👉 Answer: Metamorphosis

122. Which vitamin helps in blood clotting?

👉 Answer: Vitamin K

123. Which part of the brain controls breathing and heartbeat?

👉 Answer: Medulla oblongata

124. What is the movement of water through a selectively permeable membrane called?

👉 Answer: Osmosis

125. Which kingdom do mushrooms belong to?

👉 Answer: Fungi

⚗️ Class 8 Science GK Questions in English- Chemistry GK Questions – Class 8 Level

126. What is the chemical symbol for Sodium?

👉 Answer: Na

127. What is the chemical name of baking soda?

👉 Answer: Sodium bicarbonate

128. What is the gas used in the preparation of soda water?

👉 Answer: Carbon dioxide

129. What is the pH value of an acidic solution?

👉 Answer: Less than 7

130. What is the process of a liquid changing into a solid called?

👉 Answer: Freezing

131. What is the lightest element in the periodic table?

👉 Answer: Hydrogen

132. Which acid is present in the stomach?

👉 Answer: Hydrochloric acid

133. What type of bond is formed by sharing of electrons?

👉 Answer: Covalent bond

134. Which gas turns lime water milky?

👉 Answer: Carbon dioxide

135. What is the chemical formula of methane?

👉 Answer: CH₄

136. Name the process by which metals are extracted from their ores.

👉 Answer: Metallurgy

137. Which metal is the most reactive?

👉 Answer: Potassium

138. What is the name given to the elements in Group 18 of the periodic table?

👉 Answer: Noble gases

139. Which non-metal is a good conductor of electricity?

👉 Answer: Graphite

140. What is the main component of natural gas?

👉 Answer: Methane

141. Which chemical is used to test for the presence of starch?

👉 Answer: Iodine solution

142. What is the process of a solid changing directly into gas called?

👉 Answer: Sublimation

143. What is the common name of calcium carbonate?

👉 Answer: Limestone

144. What do you call a substance that speeds up a chemical reaction without being consumed?

👉 Answer: Catalyst

145. What is the chemical formula for sulphuric acid?

👉 Answer: H₂SO₄

146. What is the term for a solution that resists changes in pH?

👉 Answer: Buffer solution

147. Which metal is used for galvanization to prevent rusting?

👉 Answer: Zinc

148. What is the chemical symbol for Iron?

👉 Answer: Fe

149. What is the term for materials that do not conduct electricity?

👉 Answer: Insulators

150. Which gas is known as laughing gas?

👉 Answer: Nitrous oxide (N₂O)

✅ Why Class 8 Science GK Questions in English is Important for Class 8 Students?

It strengthens conceptual understanding.

Prepares students for competitive exams like NTSE and Olympiads.

Enhances critical thinking and curiosity.

Helps in school quizzes and science fairs.

📚 Final Tips to Improve Class 8 Science GK Questions in English

Read NCERT textbooks regularly.

Watch educational YouTube videos and science shows.

Practice daily quizzes and flashcards.

Take part in science exhibitions and quiz competitions.

By practicing these Class 8 Science GK questions in English, students can build a strong foundation in science, stay ahead in school, and develop a love for learning. Bookmark this page, share it with friends, and come back often to test your knowledge!

Top Class 8 Science GK Questions in English – Boost Your Knowledge Today!