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Past Questions and Answers

SS2 Third Term Chemistry Past Questions And Answers

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SS2 Third Term Chemistry Past Questions And Answers

 

SS2 third term Chemistry questions with options and answers:

 

What is the chemical formula for hydrochloric acid?

 

A) H2SO4

B) NaOH

C) HCl

D) CH3COOH

Answer: C) HCl

Which gas is produced during the process of photosynthesis?

 

A) Oxygen

B) Carbon dioxide

C) Hydrogen

D) Nitrogen

Answer: A) Oxygen

What is the SI unit of electric current?

 

A) Volt

B) Ampere

C) Ohm

D) Watt

Answer: B) Ampere

Which of the following is a metalloid?

 

A) Sodium

B) Silicon

C) Oxygen

D) Chlorine

Answer: B) Silicon

What is the chemical symbol for mercury?

 

A) Mg

B) Hg

C) Me

D) Mn

Answer: B) Hg

Which gas is produced when acids react with bases?

 

A) Oxygen

B) Hydrogen

C) Nitrogen

D) Water

Answer: D) Water

What is the chemical formula for carbon dioxide?

 

A) CO2

B) CO

C) C2O

D) CO3

Answer: A) CO2

Which of the following is a greenhouse gas?

 

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Answer: C) Carbon dioxide

What is the chemical symbol for iodine?

 

A) I

B) In

C) Fe

D) Ir

Answer: A) I

Which process involves the addition of oxygen to a substance?

 

A) Reduction

B) Oxidation

C) Decomposition

D) Combustion

Answer: B) Oxidation

What is the chemical formula for sulfur dioxide?

 

A) SO2

B) SO

C) S2O

D) S2O3

Answer: A) SO2

Which gas is responsible for the distinctive smell of rotten fish?

 

A) Ammonia

B) Hydrogen sulfide

C) Nitrous oxide

D) Methane

Answer: B) Hydrogen sulfide

Which element is the most abundant in the Earth’s crust?

 

A) Silicon

B) Oxygen

C) Aluminum

D) Iron

Answer: B) Oxygen

What is the chemical symbol for potassium hydroxide?

 

A) KOH

B) K2O

C) KNO3

D) KH

Answer: A) KOH

Which acid is present in vinegar?

 

A) Sulfuric acid

B) Nitric acid

C) Acetic acid

D) Hydrochloric acid

Answer: C) Acetic acid

What is the chemical formula for hydrogen peroxide?

 

A) H2O2

B) HO

C) H2O

D) HCl

Answer: A) H2O2

Which gas is responsible for the smell of rotten eggs?

 

A) Oxygen

B) Hydrogen

C) Methane

D) Hydrogen sulfide

Answer: D) Hydrogen sulfide

What is the process of conversion of a gas into a liquid called?

 

A) Condensation

B) Sublimation

C) Evaporation

D) Melting

Answer: A) Condensation

Which element is used in fluorescent light bulbs?

 

A) Neon

B) Mercury

C) Argon

D) Xenon

Answer: B) Mercury

What is the chemical formula for sodium bicarbonate?

 

A) NaHCO3

B) Na2CO3

C) NaCl

D) NaOH

Answer: A) NaHCO3.

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