Jss3 second term Basic science past questions and answers

Question: What is the chemical symbol for sodium?

A) Na

B) Ca

C) Cl

D) K

Answer: A) Na

Question: Which gas makes up the majority of Earth’s atmosphere?

 

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Answer: B) Nitrogen

Question: What is the primary function of the nervous system?

 

A) Pump blood

B) Control movement

C) Digest food

D) Exchange gases

Answer: B) Control movement

Question: What is the process by which water vapor turns into liquid water?

 

A) Condensation

B) Evaporation

C) Sublimation

D) Precipitation

Answer: A) Condensation

Question: Which type of rock is formed from the cooling of molten lava?

 

A) Sedimentary

B) Metamorphic

C) Igneous

D) Fossilized

Answer: C) Igneous

Question: What is the chemical symbol for carbon dioxide?

 

A) CO2

B) O2

C) CH4

D) N2

Answer: A) CO2

Question: In the human body, what is the function of red blood cells?

 

A) Carry oxygen

B) Fight infections

C) Digest food

D) Produce hormones

Answer: A) Carry oxygen

Question: Which planet is known as the “Morning Star” or “Evening Star”?

 

A) Venus

B) Mars

C) Jupiter

D) Saturn

Answer: A) Venus

Question: What is the SI unit of temperature?

 

A) Celsius

B) Kelvin

C) Fahrenheit

D) Joule

Answer: B) Kelvin

Question: Which process is responsible for the continuous recycling of water on Earth?

 

A) Transpiration

B) Precipitation

C) Photosynthesis

D) Water cycle

Answer: D) Water cycle

Question: What is the main function of the skeletal system in the human body?

 

A) Pump blood

B) Provide support and protection

C) Exchange gases

D) Digest food

Answer: B) Provide support and protection

Question: What is the chemical symbol for helium?

 

A) He

B) H

C) Ne

D) Ar

Answer: A) He

Question: Which layer of the Earth’s atmosphere is closest to the surface?

 

A) Troposphere

B) Stratosphere

C) Mesosphere

D) Thermosphere

Answer: A) Troposphere

Question: What is the smallest unit of an element that retains its properties?

 

A) Atom

B) Molecule

C) Cell

D) Organelle

Answer: A) Atom

Question: What is the chemical symbol for silver?

 

A) Au

B) Ag

C) Fe

D) Cu

Answer: B) Ag

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

 

A) Solar power

B) Wind power

C) Coal

D) Hydroelectric power

Answer: C) Coal

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

 

A) Pump blood

B) Exchange gases

C) Digest food

D) Control movement

Answer: C) Digest food

Question: In the water cycle, what process involves water turning into water vapor?

 

A) Precipitation

B) Condensation

C) Evaporation

D) Sublimation

Answer: C) Evaporation

Question: What is the chemical symbol for potassium?

 

A) K

B) Na

C) Ca

D) Cl

Answer: A) K

Question: What is the main function of the excretory system in the human body?

 

A) Pump blood

B) Exchange gases

C) Digest food

D) Remove waste products

Answer: D) Remove waste products