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Past Questions and Answers

JSS3 Third Term Basic Science Past Questions And Answers

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JSS3 Third Term Basic Science Past Questions And Answers

 

20 JSS3 Third Term Basic Science questions with options and answers:

 

Question: Which organelle is responsible for energy production in a cell?

 

A) Nucleus

B) Mitochondria

C) Endoplasmic reticulum

D) Golgi apparatus

Answer: B) Mitochondria

 

Question: What is the pH level of a neutral substance?

 

A) 0

B) 7

C) 14

D) 10

Answer: B) 7

 

Question: What is the function of the cerebrum in the brain?

 

A) Coordination of movements

B) Control of emotions and thoughts

C) Regulation of heartbeat

D) Digestion of food

Answer: B) Control of emotions and thoughts

 

Question: In the periodic table, which element has the symbol ‘Fe’?

 

A) Iron

B) Gold

C) Silver

D) Mercury

Answer: A) Iron

 

Question: What is the process of water moving from an area of high concentration to an area of low concentration through a semi-permeable membrane?

 

A) Osmosis

B) Diffusion

C) Evaporation

D) Filtration

Answer: A) Osmosis

 

Question: What is the SI unit of pressure?

 

A) Pascal

B) Newton

C) Joule

D) Watt

Answer: A) Pascal

 

Question: What is the function of the thyroid gland in the human body?

 

A) Regulation of blood sugar

B) Control of metabolism

C) Production of insulin

D) Filtration of blood

Answer: B) Control of metabolism

 

Question: Which planet is known as the “Blue Planet”?

 

A) Earth

B) Neptune

C) Uranus

D) Venus

Answer: A) Earth

 

Question: What is the chemical symbol for potassium?

 

A) K

B) P

C) Ko

D) Kr

Answer: A) K

 

Question: What is the function of the alveoli in the respiratory system?

 

A) Exchange of gases

B) Pumping blood

C) Digestion of food

D) Filtration of blood

Answer: A) Exchange of gases

 

Question: Which layer of the Earth’s atmosphere contains the ozone layer?

 

A) Troposphere

B) Stratosphere

C) Mesosphere

D) Thermosphere

Answer: B) Stratosphere

 

Question: What is the main component of Earth’s crust?

 

A) Iron

B) Oxygen

C) Silicon

D) Gold

Answer: C) Silicon

 

Question: What is the process of converting light energy into electrical energy in solar cells?

 

A) Reflection

B) Refraction

C) Photosynthesis

D) Photovoltaic

Answer: D) Photovoltaic

 

Question: Which gas is produced during photosynthesis?

 

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: A) Oxygen

 

Question: What is the function of the nephrons in the kidneys?

 

A) Filtration of blood

B) Production of red blood cells

C) Digestion of proteins

D) Regulation of body temperature

Answer: A) Filtration of blood

 

Question: What is the chemical formula for table salt?

 

A) NaCl

B) KCl

C) HCl

D) CaCl2

Answer: A) NaCl

 

Question: Which process involves the conversion of sugar into alcohol and carbon dioxide by yeast?

 

A) Respiration

B) Fermentation

C) Photosynthesis

D) Combustion

Answer: B) Fermentation

 

Question: What is the function of the cornea in the human eye?

 

A) Controlling the amount of light entering the eye

B) Focusing light onto the retina

C) Producing tears

D) Changing the shape of the lens

Answer: A) Controlling the amount of light entering the eye

 

Question: Which of the following is a greenhouse gas?

 

A) Nitrogen

B) Oxygen

C) Carbon dioxide

D) Hydrogen

Answer: C) Carbon dioxide

 

Question: What is the purpose of the ear’s eustachian tube?

 

A) Balancing pressure in the ear

B) Transmitting sound waves

C) Controlling taste sensations

D) Filtering dust particles

Answer: A) Balancing pressure in the ear.

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