Junior waec Basic science exam questions

Junior waec Basic science exam questions

Here they are;

Question: What is the chemical symbol for oxygen?

A) O

B) Ox

C) Oz

D) On

Answer: A) O

Question: Which planet is known as the "Red Planet"?

A) Venus

B) Mars

C) Jupiter

D) Saturn

Answer: B) Mars

Question: What is the smallest unit of life?

A) Atom

B) Cell

C) Molecule

D) Organism

Answer: B) Cell

Question: Which gas do plants absorb from the atmosphere during photosynthesis?

A) Carbon dioxide

B) Oxygen

C) Nitrogen

D) Hydrogen

Answer: A) Carbon dioxide

Question: What is the chemical formula for water?

A) H2O

B) CO2

C) CH4

D) NaCl

Answer: A) H2O

Question: Which of the following is a non-renewable source of energy?

A) Solar power

B) Wind power

C) Natural gas

D) Hydroelectric power

Answer: C) Natural gas

Question: What is the process by which plants make their own food using sunlight?

A) Respiration

B) Digestion

C) Photosynthesis

D) Fermentation

Answer: C) Photosynthesis

Question: Which part of the human body is responsible for pumping blood?

A) Brain

B) Liver

C) Heart

D) Lungs

Answer: C) Heart

Question: What is the SI unit of force?

A) Joule

B) Watt

C) Newton

D) Volt

Answer: C) Newton

Question: What is the chemical symbol for gold?

A) Au

B) Ag

C) Fe

D) Hg

Answer: A) Au

Question: Which gas is most abundant in the Earth's atmosphere?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: C) Nitrogen

Question: What is the process of a solid changing directly into a gas without becoming a liquid first?

A) Sublimation

B) Evaporation

C) Condensation

D) Melting

Answer: A) Sublimation

Question: Which of the following is a source of renewable energy?

A) Coal

B) Oil

C) Solar power

D) Natural gas

Answer: C) Solar power

Question: What is the chemical formula for table salt?

A) H2O

B) NaCl

C) CO2

D) O2

Answer: B) NaCl

Question: What is the largest planet in our solar system?

A) Earth

B) Venus

C) Jupiter

D) Mars

Answer: C) Jupiter

Question: Which part of the flower is responsible for producing seeds?

A) Petals

B) Stem

C) Stamen

D) Sepal

Answer: C) Stamen

Question: What is the main function of the respiratory system?

A) Pump blood

B) Digest food

C) Exchange oxygen and carbon dioxide

D) Filter waste

Answer: C) Exchange oxygen and carbon dioxide

Question: What is the chemical symbol for iron?

A) I

B) Ir

C) Fe

D) F

Answer: C) Fe

Question: Which of the following is a type of simple machine used to lift heavy objects?

A) Screw

B) Lever

C) Spring

D) Battery

Answer: B) Lever

Question: What is the process of water changing from a liquid to a gas at or near the surface of the Earth?

A) Melting

B) Sublimation

C) Condensation

D) Evaporation

Answer: D) Evaporation