SS2 Third Term Chemistry Past Questions And Answers

SS2 Chemistry questions with options and answers:

 

Question: What is the chemical formula for ozone?

 

A) O2

B) O3

C) NO2

D) CO2

Answer: B) O3

Question: Which gas is responsible for the sweet smell of fruits?

 

A) Ethane

B) Methane

C) Ethylene

D) Butane

Answer: C) Ethylene

Question: What is the chemical symbol for tungsten?

 

A) Tu

B) Tg

C) Tw

D) W

Answer: D) W

Question: What is the pH range for acids on the pH scale?

 

A) 0-6

B) 7-14

C) 0-7

D) 8-14

Answer: C) 0-7

Question: Which metal is used in thermometers?

 

A) Aluminum

B) Mercury

C) Copper

D) Iron

Answer: B) Mercury

Question: What is the chemical formula for rust?

 

A) Fe2O3

B) FeO

C) Fe3O4

D) FeSO4

Answer: A) Fe2O3

Question: Which gas is evolved when a candle burns?

 

A) Oxygen

B) Carbon dioxide

C) Hydrogen

D) Methane

Answer: B) Carbon dioxide

Question: What is the chemical symbol for phosphorus?

 

A) P

B) Ph

C) Po

D) Pt

Answer: A) P

Question: In the periodic table, which period corresponds to the alkali metals?

 

A) Period 1

B) Period 2

C) Period 3

D) Period 4

Answer: B) Period 2

Question: What is the chemical formula for common baking soda?

 

A) Na2CO3

B) NaClO

C) NaHCO3

D) NaOH

Answer: C) NaHCO3

Question: Which element is a halogen with the chemical symbol Br?

 

A) Boron

B) Bromine

C) Barium

D) Beryllium

Answer: B) Bromine

Question: What is the chemical symbol for neon?

 

A) Ne

B) Na

C) Ni

D) Nu

Answer: A) Ne

Question: Which gas is responsible for the “new car smell”?

 

A) Nitrogen dioxide

B) Benzene

C) Formaldehyde

D) Oxygen

Answer: C) Formaldehyde

Question: What is the common name for sodium bicarbonate?

 

A) Baking powder

B) Epsom salt

C) Borax

D) Cream of tartar

Answer: A) Baking powder

Question: What is the chemical formula for aspirin?

 

A) C6H12O6

B) C9H8O4

C) CH3COOH

D) H2SO4

Answer: B) C9H8O4

Question: Which gas is responsible for the distinctive odor of rotten fish?

 

A) Ammonia

B) Hydrogen sulfide

C) Methane

D) Sulfur dioxide

Answer: B) Hydrogen sulfide

Question: What is the chemical symbol for iodine?

 

A) I

B) Ir

C) In

D) Io

Answer: A) I

Question: Which substance is known as the universal solvent?

 

A) Water

B) Alcohol

C) Acetone

D) Ether

Answer: A) Water

Question: What is the chemical formula for hydrogen sulfide?

 

A) H2SO4

B) H2S

C) HS

D) H2O2

Answer: B) H2S

Question: In the periodic table, whi

ch group do the alkaline earth metals belong to?

 

A) Group 1

B) Group 2

C) Group 17

D) Group 18

Answer: B) Group 2