Jss2 first term basic science past questions and answers

Jss2 first term basic science past questions and answers

Here are 20 basic science questions for JSS2 students, along with options and answers:

Question: What is the chemical symbol for water?

Options:

A) H2O

B) CO2

C) O2

D) NaCl

Answer: A) H2O

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

Options:

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: B) Carbon dioxide

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

Options:

A) Earth

B) Mars

C) Mercury

D) Venus

Answer: C) Mercury

Question: Which part of the human brain is responsible for regulating basic life functions like breathing and heart rate?

Options:

A) Cerebrum

B) Cerebellum

C) Medulla oblongata

D) Hypothalamus

Answer: C) Medulla oblongata

Question: What is the chemical formula for glucose?

Options:

A) C6H12O6

B) H2SO4

C) NaCl

D) CO2

Answer: A) C6H12O6

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

Options:

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: C) Nitrogen

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

Options:

A) Respiration

B) Photosynthesis

C) Digestion

D) Fermentation

Answer: B) Photosynthesis

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 largest organ in the human body?

Options:

A) Brain

B) Heart

C) Liver

D) Skin

Answer: D) Skin

Question: Which of the following is not a renewable source of energy?

Options:

A) Solar

B) Wind

C) Natural gas

D) Hydroelectric

Answer: C) Natural gas

Question: What is the main function of the red blood cells in the human body?

Options:

A) Carrying oxygen

B) Digesting food

C) Fighting infections

D) Pumping blood

Answer: A) Carrying oxygen

Question: What is the chemical symbol for gold?

Options:

A) Ag

B) Fe

C) Au

D) Cu

Answer: C) Au

Question: What is the unit of measurement for electrical resistance?

Options:

A) Volts

B) Watts

C) Ohms

D) Amperes

Answer: C) Ohms

Question: Which of the following is not a primary color in the subtractive color model?

Options:

A) Red

B) Green

C) Blue

D) Yellow

Answer: D) Yellow

Question: What is the chemical symbol for silver?

Options:

A) Ag

B) Si

C) Sr

D) Sn

Answer: A) Ag

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

Options:

A) Boiling

B) Evaporation

C) Condensation

D) Freezing

Answer: B) Evaporation

Question: Which planet is known for its beautiful and distinct ring system?

Options:

A) Earth

B) Mars

C) Saturn

D) Neptune

Answer: C) Saturn

Question: What is the chemical symbol for iron?

Options:

A) Fe

B) Ir

C) In

D) Ni

Answer: A) Fe

Question: What is the process by which plants release water vapor into the atmosphere through tiny openings in their leaves?

Options:

A) Transpiration

B) Precipitation

C) Condensation

D) Filtration

Answer: A) Transpiration

Question: What is the fundamental particle of an element that determines its chemical properties?

Options:

A) Atom

B) Molecule

C) Cell

D) Electron

Answer: A) Atom.