SS2 First Term Chemistry Past Questions And Answers

20 SS2 Chemistry questions with options and answers:

 

Question: What is the chemical symbol for gold?

 

A) Ag

B) Au

C) Fe

D) Hg

Answer: B) Au

Question: Which gas is most abundant in Earth’s atmosphere?

 

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Hydrogen

Answer: B) Nitrogen

Question: What is the pH of a neutral solution?

 

A) 0

B) 7

C) 14

D) 1

Answer: B) 7

Question: What is the chemical formula for water?

 

A) CO2

B) H2O

C) CH4

D) O2

Answer: B) H2O

Question: Which element has the symbol ‘Na’ on the periodic table?

 

A) Nickel

B) Sodium

C) Nitrogen

D) Neon

Answer: B) Sodium

Question: What is the formula for methane?

 

A) CH4

B) CO2

C) C2H6

D) H2O

Answer: A) CH4

Question: Which gas is responsible for the greenhouse effect?

 

A) Oxygen

B) Carbon monoxide

C) Carbon dioxide

D) Nitrogen

Answer: C) Carbon dioxide

Question: What is the chemical symbol for iron?

 

A) Fe

B) I

C) Ir

D) In

Answer: A) Fe

Question: What is the formula for sulfuric acid?

 

A) HCl

B) H2SO4

C) NaOH

D) CO2

Answer: B) H2SO4

Question: How many electrons does a neutral hydrogen atom have?

 

A) 0

B) 1

C) 2

D) 3

Answer: B) 1

Question: What is the chemical symbol for silver?

A) Si

B) S

C) Ag

D) Al

Answer: C) Ag

Question: Which of the following is a noble gas?

A) Oxygen

B) Helium

C) Fluorine

D) Nitrogen

Answer: B) Helium

Question: What is the primary component of natural gas?

A) Methane

B) Ethane

C) Propane

D) Butane

Answer: A) Methane

Question: Which metal is liquid at room temperature?

A) Mercury

B) Lead

C) Iron

D) Aluminum

Answer: A) Mercury

Question: What is the chemical formula for table salt?

A) NaCl

B) KCl

C) CaCl2

D) MgCl2

Answer: A) NaCl

Question: What is the chemical symbol for potassium?

A) K

B) Pt

C) P

D) Kr

Answer: A) K

Question: Which gas is produced during photosynthesis?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: A) Oxygen

Question: What is the common name for acetylsalicylic acid?

A) Aspirin

B) Ibuprofen

C) Paracetamol

D) Morphine

Answer: A) Aspirin

Question: What is the molecular formula for glucose?

A) C6H12O6

B) CH4

C) CO2

D) H2O

Answer: A) C6H12O6

Question: Which gas is responsible for the smell

of rotten eggs?

A) Hydrogen

B) Sulfur dioxide

C) Methane

D) Hydrogen sulfide

Answer: D) Hydrogen sulfide