General Science MCQ GK - MCQ GK

General Science MCQ GK

Total Questions: 200

1) What is the chemical symbol for water?

a) H2O

b) O2H

c) H2O2

d) HO2

2) Which planet is known as the Red Planet?

a) Earth

b) Venus

c) Mars

d) Jupiter

3) What is the powerhouse of the cell?

a) Nucleus

b) Mitochondria

c) Ribosome

d) Chloroplast

4) What is the process of converting solid directly into gas called?

a) Evaporation

b) Sublimation

c) Condensation

d) Melting

5) Which gas do plants absorb from the atmosphere for photosynthesis?

a) Oxygen

b) Nitrogen

c) Carbon Dioxide

d) Hydrogen

6) What is the unit of force in the International System of Units (SI)?

a) Joule

b) Newton

c) Pascal

d) Watt

7) What is the most abundant gas in the Earth's atmosphere?

a) Oxygen

b) Carbon Dioxide

c) Nitrogen

d) Argon

8) Which organ is responsible for pumping blood throughout the human body?

a) Liver

b) Brain

c) Heart

d) Lungs

9) What is the chemical formula for table salt?

a) NaCl

b) KCl

c) CaCl2

d) MgCl2

10) Which vitamin is produced when a person is exposed to sunlight?

a) Vitamin A

b) Vitamin B12

c) Vitamin C

d) Vitamin D

11) What is the main function of red blood cells?

a) Fight infection

b) Carry oxygen

c) Clot blood

d) Regulate body temperature

12) Which part of the human brain is responsible for coordination and balance?

a) Cerebrum

b) Cerebellum

c) Brainstem

d) Hypothalamus

13) What is the speed of light in a vacuum?

a) 300,000 km/s

b) 150,000 km/s

c) 1,000 km/s

d) 500,000 km/s

14) Which element is used in batteries?

a) Lead

b) Iron

c) Gold

d) Copper

15) What type of energy is stored in food?

a) Kinetic Energy

b) Potential Energy

c) Chemical Energy

d) Nuclear Energy

16) What is the main gas in natural gas?

a) Methane

b) Ethane

c) Propane

d) Butane

17) What is the pH level of pure water?

a) 5

b) 7

c) 9

d) 10

18) What is the smallest unit of an element?

a) Atom

b) Molecule

c) Compound

d) Ion

19) Which organ is responsible for detoxifying chemicals in the body?

a) Lungs

b) Kidneys

c) Liver

d) Heart

20) What is the basic unit of life?

a) Cell

b) Tissue

c) Organ

d) Organism

21) Which law states that energy cannot be created or destroyed?

a) Newton's First Law

b) Law of Conservation of Energy

c) Second Law of Thermodynamics

d) Boyle's Law

22) What type of bond involves the sharing of electron pairs between atoms?

a) Ionic Bond

b) Covalent Bond

c) Hydrogen Bond

d) Metallic Bond

23) What is the main source of energy for the Earth?

a) Wind

b) Geothermal

c) Solar

d) Nuclear

24) Which process involves the conversion of liquid to gas?

a) Condensation

b) Evaporation

c) Sublimation

d) Freezing

25) What type of organism is a mushroom?

a) Plant

b) Animal

c) Fungus

d) Bacteria

26) What is the common name for the element with the chemical symbol O?

a) Osmium

b) Oxygen

c) Oganesson

d) Ozone

27) Which gas is a byproduct of photosynthesis?

a) Oxygen

b) Carbon Dioxide

c) Nitrogen

d) Hydrogen

28) What is the process of breaking down food into energy called?

a) Digestion

b) Metabolism

c) Respiration

d) Photosynthesis

29) What is the study of the Earth’s atmosphere and its phenomena?

a) Geology

b) Meteorology

c) Astronomy

d) Ecology

30) Which part of the eye controls the amount of light that enters?

a) Pupil

b) Lens

c) Retina

d) Cornea

31) What is the main function of the skeleton?

a) Protection

b) Movement

c) Support

d) All of the above

32) Which organ is responsible for breathing?

a) Heart

b) Liver

c) Lungs

d) Kidneys

33) What is the chemical symbol for gold?

a) Au

b) Ag

c) Fe

d) Pb

34) What type of rock is formed from cooled magma or lava?

a) Sedimentary

b) Metamorphic

c) Igneous

d) Fossil

35) What is the main function of the large intestine?

a) Absorb nutrients

b) Absorb water

c) Produce bile

d) Digest food

36) Which vitamin is essential for vision?

a) Vitamin A

b) Vitamin B

c) Vitamin C

d) Vitamin D

37) What is the main component of the cell membrane?

a) Protein

b) Carbohydrate

c) Lipid

d) Nucleic Acid

38) Which planet is known for its rings?

a) Earth

b) Mars

c) Jupiter

d) Saturn

39) What is the chemical formula for carbon dioxide?

a) CO

b) CO2

c) C2O

d) C3O2

40) What is the most abundant element in the universe?

a) Oxygen

b) Hydrogen

c) Carbon

d) Nitrogen

41) What do you call the change of state from gas to liquid?

a) Condensation

b) Evaporation

c) Sublimation

d) Freezing

42) Which part of the cell contains genetic material?

a) Cytoplasm

b) Nucleus

c) Mitochondria

d) Ribosomes

43) What is the unit of measurement for electric current?

a) Volt

b) Ohm

c) Ampere

d) Watt

44) What type of energy is associated with the motion of an object?

a) Potential Energy

b) Kinetic Energy

c) Mechanical Energy

d) Nuclear Energy

45) What is the primary gas found in the human exhaled breath?

a) Oxygen

b) Nitrogen

c) Carbon Dioxide

d) Hydrogen

46) Which of the following is a renewable source of energy?

a) Coal

b) Natural Gas

c) Wind

d) Nuclear

47) What is the main function of the respiratory system?

a) Digest food

b) Circulate blood

c) Exchange gases

d) Support the body

48) What is the hardest natural substance on Earth?

a) Gold

b) Diamond

c) Iron

d) Quartz

49) Which nutrient is responsible for building and repairing tissues?

a) Carbohydrates

b) Proteins

c) Fats

d) Vitamins

50) Which of the following is not a planet in our solar system?

a) Mercury

b) Venus

c) Pluto

d) Sun

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