SS1 third Term chemistry past questions and answers

SS1 third Term chemistry past questions and answers

SS1 chemistry questions with options and answers:

Question: What is the chemical formula for sulfuric acid?

A) H2SO4

B) HCl

C) NaOH

D) CH3COOH

Answer: A) H2SO4

Question: Which gas is produced by the burning of fossil fuels?

A) Oxygen

B) Carbon dioxide

C) Nitrous oxide

D) Methane

Answer: B) Carbon dioxide

Question: What is the chemical symbol for potassium?

A) Ka

B) K

C) Ko

D) Ke

Answer: B) K

Question: In the periodic table, what is the symbol for helium?

A) H

B) He

C) Hy

D) Hl

Answer: B) He

Question: Which gas is commonly used in light bulbs?

A) Neon

B) Argon

C) Xenon

D) Helium

Answer: B) Argon

Question: What is the chemical formula for ammonia?

A) NH3

B) N2

C) NO2

D) HNO3

Answer: A) NH3

Question: Which of the following is a noble gas?

A) Oxygen

B) Neon

C) Chlorine

D) Hydrogen

Answer: B) Neon

Question: What is the chemical symbol for lead?

A) Ld

B) Le

C) Pb

D) Pd

Answer: C) Pb

Question: Which acid is found in lemons?

A) Citric acid

B) Acetic acid

C) Hydrochloric acid

D) Sulfuric acid

Answer: A) Citric acid

Question: What is the chemical formula for carbon dioxide?

A) CO

B) CO2

C) C2O

D) C3O2

Answer: B) CO2

Question: Which element is the main component of the Earth's atmosphere?

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Argon

Answer: B) Nitrogen

Question: What is the chemical symbol for mercury?

A) Me

B) Hg

C) Mr

D) Mg

Answer: B) Hg

Question: Which gas is responsible for the "rotten egg" smell?

A) Methane

B) Hydrogen sulfide

C) Nitrous oxide

D) Carbon monoxide

Answer: B) Hydrogen sulfide

Question: What is the chemical formula for table sugar (sucrose)?

A) C6H12O6

B) CO2

C) H2O

D) C12H22O11

Answer: D) C12H22O11

Question: Which gas is used in welding to provide an inert atmosphere?

A) Oxygen

B) Nitrogen

C) Argon

D) Hydrogen

Answer: C) Argon

Question: What is the chemical symbol for copper?

A) Cp

B) Cu

C) Co

D) Cr

Answer: B) Cu

Question: Which element is essential for the structure of bones and teeth?

A) Calcium

B) Iron

C) Sodium

D) Potassium

Answer: A) Calcium

Question: What is the chemical formula for hydrofluoric acid?

A) HF

B) HCl

C) HBr

D) HI

Answer: A) HF

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

A) Methane

B) Ethane

C) Propane

D) Butane

Answer: C) Propane

Question: What is the chemical symbol for tin?

A) Tn

B) Ti

C) Sn

D) Si

Answer: C) Sn