Jss2 second Term basic science past questions and answers

Jss2 second Term basic science past questions and answers

Basic science questions for JSS2 students, along with options and answers:

Question: What is the chemical symbol for carbon dioxide?

Options:

A) CO

B) CO2

C) O2

D) H2O

Answer: B) CO2

Question: Which planet is known as the "Evening Star" or the "Morning Star" due to its visibility from Earth?

Options:

A) Earth

B) Mars

C) Venus

D) Jupiter

Answer: C) Venus

Question: Which gas is responsible for the blue color of the Earth's sky?

Options:

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Ozone

Answer: C) Nitrogen

Question: What is the main function of the large intestine in the human digestive system?

Options:

A) Digesting food

B) Absorbing nutrients

C) Storing bile

D) Absorbing water and salts

Answer: D) Absorbing water and salts

Question: What is the process of plants losing water vapor through tiny openings in their leaves?

Options:

A) Photosynthesis

B) Respiration

C) Transpiration

D) Fermentation

Answer: C) Transpiration

Question: Which gas do humans primarily exhale during respiration?

Options:

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: B) Carbon dioxide

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

Options:

A) Breathing

B) Pumping blood

C) Digesting food

D) Regulating body temperature

Answer: B) Pumping blood

Question: What is the chemical formula for table salt?

Options:

A) H2O

B) CO2

C) NaCl

D) CaCl2

Answer: C) NaCl

Question: What is the chemical symbol for helium?

Options:

A) He

B) H

C) Ne

D) Ar

Answer: A) He

Question: Which of the following is not a type of simple machine?

Options:

A) Lever

B) Wheel and axle

C) Electron

D) Pulley

Answer: C) Electron

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

Options:

A) Melting

B) Freezing

C) Sublimation

D) Evaporation

Answer: C) Sublimation

Question: What is the chemical symbol for silver?

Options:

A) Ag

B) Si

C) Sr

D) Sn

Answer: A) Ag

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

Options:

A) Earth

B) Venus

C) Mars

D) Jupiter

Answer: C) Mars

Question: What is the process of a liquid changing into a gas at its boiling point called?

Options:

A) Boiling

B) Evaporation

C) Condensation

D) Freezing

Answer: A) Boiling

Question: What is the chemical symbol for gold?

Options:

A) Ag

B) Fe

C) Au

D) Cu

Answer: C) Au

Question: Which of the following is not a greenhouse gas?

Options:

A) Carbon dioxide (CO2)

B) Methane (CH4)

C) Oxygen (O2)

D) Water vapor (H2O)

Answer: C) Oxygen (O2)

Question: What is the process of a gas changing into a liquid called?

Options:

A) Melting

B) Boiling

C) Condensation

D) Sublimation

Answer: C) Condensation

Question: Which planet is the hottest in our solar system due to its thick greenhouse effect?

Options:

A) Mercury

B) Venus

C) Earth

D) Mars

Answer: B) Venus

Question: What is the chemical symbol for potassium?

Options:

A) K

B) Po

C) Pt

D) Pb

Answer: A) K

Question: What is the process of a liquid changing into a solid called?

Options:

A) Melting

B) Boiling

C) Freezing

D) Sublimation

Answer: C) Freezing