Jss2 second term Basic science past questions and answers

Here are 20 more JSS2 basic science questions:

Question: What is the chemical formula for table salt?

a) NaCl

b) HCl

c) KCl

d) MgCl2

 

Answer: a) NaCl

 

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

a) Carbon dioxide

b) Oxygen

c) Nitrogen

d) Hydrogen

 

Answer: a) Carbon dioxide

 

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

a) Producing hormones

b) Providing support and protection

c) Pumping blood

d) Digesting food

 

Answer: b) Providing support and protection

 

Question: In which part of the digestive system does nutrient absorption mainly occur?

a) Stomach

b) Small intestine

c) Large intestine

d) Esophagus

 

Answer: b) Small intestine

 

Question: What is the process of plants releasing water vapor into the atmosphere?

a) Transpiration

b) Evaporation

c) Condensation

d) Precipitation

 

Answer: a) Transpiration

 

Question: What is the Earth’s outermost layer called?

a) Crust

b) Mantle

c) Core

d) Lithosphere

 

Answer: a) Crust

 

Question: Which instrument is used to measure temperature?

a) Barometer

b) Thermometer

c) Hydrometer

d) Spectrometer

 

Answer: b) Thermometer

 

Question: What is the formula for calculating density?

a) Density = Mass/Volume

b) Density = Volume/Mass

c) Density = Force/Area

d) Density = Acceleration/Time

 

Answer: a) Density = Mass/Volume

 

Question: Which component of the blood is responsible for carrying oxygen?

a) Platelets

b) Red blood cells

c) White blood cells

d) Plasma

 

Answer: b) Red blood cells

 

Question: What is the chemical symbol for carbon dioxide?

a) CO

b) CO2

c) C2O

d) O2C

 

Answer: b) CO2

 

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

a) Producing hormones

b) Digesting food

c) Eliminating waste from the body

d) Pumping blood

 

Answer: c) Eliminating waste from the body

 

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

a) Venus

b) Mercury

c) Mars

d) Jupiter

 

Answer: a) Venus

 

Question: What is the process of converting sunlight into energy in plants?

a) Photosynthesis

b) Respiration

c) Fermentation

d) Transpiration

 

Answer: a) Photosynthesis

 

Question: Which layer of the Earth is responsible for generating its magnetic field?

a) Crust

b) Mantle

c) Outer core

d) Inner core

 

Answer: c) Outer core

 

Question: What is the unit of measurement for force?

a) Newton

b) Watt

c) Joule

d) Volt

 

Answer: a) Newton

 

Question: What is the process by which plants take in water through their roots?

a) Transpiration

b) Evaporation

c) Absorption

d) Filtration

 

Answer: c) Absorption

 

Question: Which gas is responsible for the greenhouse effect on Earth?

a) Oxygen

b) Nitrogen

c) Carbon dioxide

d) Methane

 

Answer: c) Carbon dioxide

 

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

a) Pumping blood

b) Providing support and protection

c) Producing movement

d) Digesting food

 

Answer: c) Producing movement

 

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

a) Evaporation

b) Condensation

c) Precipitation

d) Transpiration

 

Answer: b) Condensation

 

Question: What is the SI unit for measuring electric resistance?

a) Ohm

b) Ampere

c) Volt

d) Watt

 

Answer: a) Ohm