SS1 Second Term Chemistry Past Questions and Answers

What is the chemical formula for sulfuric acid?

 

A) HCl

B) H2SO4

C) NaOH

D) CH4

Answer: B) H2SO4

Which gas gives fizzy drinks their bubbles?

 

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: B) Carbon dioxide

What is the process of conversion of a solid directly to a gas without passing through the liquid state called?

 

A) Sublimation

B) Condensation

C) Vaporization

D) Fusion

Answer: A) Sublimation

Which element is used in fluorescent lights?

 

A) Neon

B) Mercury

C) Argon

D) Xenon

Answer: B) Mercury

What is the chemical symbol for potassium?

 

A) K

B) Ko

C) Pt

D) P

Answer: A) K

Which gas is produced during the process of respiration in living organisms?

 

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: B) Carbon dioxide

What is the formula for the compound formed between sodium and chlorine?

 

A) NaCl2

B) Na2Cl

C) NaCl

D) Na2Cl2

Answer: C) NaCl

What is the chemical symbol for helium?

 

A) He

B) Hl

C) Hy

D) Hea

Answer: A) He

Which gas is responsible for the process of ozone layer depletion?

 

A) Oxygen

B) Carbon dioxide

C) Chlorofluorocarbons (CFCs)

D) Methane

Answer: C) Chlorofluorocarbons (CFCs)

What is the chemical formula for glucose?

 

A) C6H12O6

B) CH4O

C) C2H6O

D) CO2

Answer: A) C6H12O6

Which metal is often used in batteries?

 

A) Aluminum

B) Zinc

C) Copper

D) Iron

Answer: B) Zinc

What is the chemical symbol for nitrogen?

 

A) N

B) Ni

C) Na

D) Ne

Answer: A) N

Which gas is produced during the process of photosynthesis in plants?

 

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: A) Oxygen

What is the chemical formula for hydrochloric acid?

 

A) H2O

B) HCl

C) NaOH

D) CO2

Answer: B) HCl

Which element is found in abundance in the Earth’s inner core?

 

A) Iron

B) Nickel

C) Copper

D) Aluminum

Answer: B) Nickel

What is the chemical symbol for lead?

 

A) Li

B) Le

C) Pb

D) Pt

Answer: C) Pb

Which gas is responsible for the characteristic smell of rotten eggs?

 

A) Hydrogen

B) Methane

C) Sulfur dioxide

D) Carbon monoxide

Answer: C) Sulfur dioxide

What is the chemical formula for ammonia?

 

A) NH4

B) NH3

C) N2H4

D) H3N

Answer: B) NH3

In the periodic table, which group do alkali metals belong to?

 

A) Group 1

B) Group 2

C) Group 17

D) Group 18

Answer: A) Group 1

Which gas is commonl

y used for inflating balloons to make them float?

 

A) Oxygen

B) Helium

C) Nitrogen

D) Hydrogen

Answer: B) Helium