SS1 first term Chemistry past questions and answers

SS1 first term Chemistry past questions and answers

Here are 20 SS1 chemistry questions with options and answers:

Question: What is the chemical symbol for gold?

A) Au

B) Ag

C) Fe

D) Hg

Answer: A) Au

Question: Which gas is responsible for the greenhouse effect?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: B) Carbon dioxide

Question: What is the pH value of a neutral substance?

A) 0

B) 7

C) 14

D) 1

Answer: B) 7

Question: Which element has the chemical symbol "O"?

A) Oxygen

B) Osmium

C) Oganesson

D) Osmium

Answer: A) Oxygen

Question: What is the chemical formula for water?

A) CO2

B) H2O

C) NaCl

D) CH4

Answer: B) H2O

Question: Which gas do plants absorb during photosynthesis?

A) Carbon dioxide

B) Oxygen

C) Nitrogen

D) Hydrogen

Answer: A) Carbon dioxide

Question: What is the chemical formula for table salt?

A) HCl

B) NaCl

C) KCl

D) CaCl2

Answer: B) NaCl

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

A) Oxygen

B) Hydrogen

C) Nitrogen

D) Chlorine

Answer: B) Hydrogen

Question: What is the chemical symbol for iron?

A) Fe

B) Ir

C) In

D) Au

Answer: A) Fe

Question: What is the main component of natural gas?

A) Methane

B) Ethane

C) Propane

D) Butane

Answer: A) Methane

Question: Which gas do humans exhale during respiration?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: B) Carbon dioxide

Question: What is the chemical formula for methane?

A) CH3

B) CO2

C) CH4

D) C2H6

Answer: C) CH4

Question: Which element is essential for making proteins in living organisms?

A) Carbon

B) Nitrogen

C) Hydrogen

D) Oxygen

Answer: B) Nitrogen

Question: What is the chemical symbol for sodium?

A) Sa

B) So

C) Na

D) Ni

Answer: C) Na

Question: What is the chemical formula for glucose?

A) C6H12O6

B) CO2

C) H2O

D) CH4

Answer: A) C6H12O6

Question: Which gas is used in photosynthesis?

A) Carbon dioxide

B) Oxygen

C) Nitrogen

D) Hydrogen

Answer: A) Carbon dioxide

Question: What is the chemical symbol for silver?

A) Si

B) Ag

C) Au

D) Al

Answer: B) Ag

Question: What is the chemical formula for hydrochloric acid?

A) HCl

B) H2SO4

C) NaOH

D) CH3COOH

Answer: A) HCl

Question: Which gas is responsible for the color of the Earth's sky?

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Helium

Answer: B) Nitrogen

Question: What is the chemical symbol for carbon?

A) Ca

B) C

C) Co

D) Cr

Answer: B) C