SS2 Second Term Chemistry Past Questions And Answers

SS2 Chemistry questions with options and answers:

 

Question: What is the chemical symbol for lead?

 

A) Li

B) Pb

C) Pt

D) Po

Answer: B) Pb

Question: Which element is essential for human bones and teeth?

 

A) Calcium

B) Iron

C) Sodium

D) Potassium

Answer: A) Calcium

Question: What is the chemical formula for ammonia?

 

A) NH3

B) NO2

C) N2O

D) N2H4

Answer: A) NH3

Question: Which gas is known as laughing gas?

 

A) Nitrous oxide

B) Carbon monoxide

C) Methane

D) Sulphur dioxide

Answer: A) Nitrous oxide

Question: What is the chemical symbol for copper?

 

A) Co

B) Cr

C) Cu

D) Cn

Answer: C) Cu

Question: In the periodic table, the elements are arranged in order of increasing what?

 

A) Mass

B) Density

C) Atomic number

D) Melting point

Answer: C) Atomic number

Question: Which gas is produced when an acid reacts with a metal?

 

A) Hydrogen

B) Oxygen

C) Nitrogen

D) Carbon dioxide

Answer: A) Hydrogen

Question: What is the chemical formula for hydrogen peroxide?

 

A) H2O

B) HO2

C) H2O2

D) HO

Answer: C) H2O2

Question: What is the main component of natural gas smell?

 

A) Methane

B) Ethane

C) Propane

D) Mercaptan

Answer: D) Mercaptan

Question: Which element is a noble gas with the chemical symbol Kr?

 

A) Krypton

B) Kryptonite

C) Kryptonium

D) Kryptium

Answer: A) Krypton

Question: What is the common name for hydrochloric acid?

 

A) Vinegar

B) Muriatic acid

C) Citric acid

D) Sulphuric acid

Answer: B) Muriatic acid

Question: What is the chemical formula for methane?

 

A) CH3

B) CH4

C) C2H4

D) C3H8

Answer: B) CH4

Question: Which metal is commonly used for making electrical wires?

 

A) Aluminum

B) Copper

C) Gold

D) Silver

Answer: B) Copper

Question: What is the chemical symbol for tin?

 

A) Ti

B) Tn

C) Sn

D) Si

Answer: C) Sn

Question: In a chemical reaction, the total mass of the reactants is equal to the total mass of the what?

 

A) Products

B) Catalysts

C) Solvents

D) Precipitates

Answer: A) Products

Question: Which gas is responsible for the “rotten cabbage” smell?

 

A) Hydrogen

B) Sulphur dioxide

C) Methane

D) Ethylene

Answer: B) Sulphur dioxide

Question: What is the chemical formula for common salt?

 

A) NaNO3

B) NaClO

C) NaCl

D) Na2CO3

Answer: C) NaCl

Question: What is the chemical symbol for mercury?

 

A) Hg

B) Mg

C) Me

D) Mn

Answer: A) Hg

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

 

A) Silicon

B) Oxygen

C) Aluminum

D) Iron

Answer: B)

Oxygen

Question: What is the chemical formula for vinegar?

 

A) CH3COOH

B) HCl

C) NaOH

D) H2SO4

Answer: A) CH3COOH