SS2 first term Chemistry past questions and answers

SS2 first term Chemistry past questions and answers

Here are 20 SS2 (Senior Secondary 2) chemistry questions with options and answers:

Question: What is the chemical symbol for gold?

A) Au

B) Ag

C) Fe

D) Cu

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 of a solution with a hydrogen ion concentration of 1 x 10^-8 M?

A) 6

B) 8

C) 7

D) 2

Answer: C) 7

Question: Which of the following is a noble gas?

A) Helium

B) Chlorine

C) Nitrogen

D) Oxygen

Answer: A) Helium

Question: What is the chemical formula for sodium chloride?

A) NaCl

B) KCl

C) Na2CO3

D) CaCl2

Answer: A) NaCl

Question: In a chemical reaction, what does the arrow symbol (→) represent?

A) Addition

B) Subtraction

C) Transformation

D) Reaction direction

Answer: D) Reaction direction

Question: Which element has the atomic number 17?

A) Chlorine

B) Sodium

C) Oxygen

D) Carbon

Answer: A) Chlorine

Question: What is the chemical formula for water?

A) H2O

B) CO2

C) CH4

D) O2

Answer: A) H2O

Question: What is the formula for methane?

A) CH4

B) CO2

C) H2O

D) NH3

Answer: A) CH4

Question: Which gas is responsible for the smell of rotten eggs?

A) Hydrogen

B) Oxygen

C) Sulfur dioxide

D) Carbon monoxide

Answer: C) Sulfur dioxide

Question: What is the formula for sulfuric acid?

A) HNO3

B) H2SO4

C) HCl

D) HF

Answer: B) H2SO4

Question: Which of the following is a halogen?

A) Fluorine

B) Sodium

C) Potassium

D) Calcium

Answer: A) Fluorine

Question: What is the chemical symbol for iron?

A) Fe

B) Au

C) Ag

D) Cu

Answer: A) Fe

Question: What is the chemical formula for ammonia?

A) NH3

B) NO2

C) N2O

D) N2H4

Answer: A) NH3

Question: Which gas is produced during photosynthesis?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Hydrogen

Answer: A) Oxygen

Question: What is the chemical formula for carbon dioxide?

A) CO2

B) CO

C) C2O

D) HCO3

Answer: A) CO2

Question: What is the chemical symbol for potassium?

A) K

B) Na

C) Ca

D) Mg

Answer: A) K

Question: Which of the following is a greenhouse gas?

A) Oxygen

B) Methane

C) Nitrogen

D) Argon

Answer: B) Methane

Question: What is the formula for hydrochloric acid?

A) HCl

B) H2SO4

C) HNO3

D) HF

Answer: A) HCl

Question: What is the atomic number of carbon?

A) 12

B) 6

C) 14

D) 8

Answer: B) 6