SS2 First Term Chemistry Past Questions And Answers
Here are 20 SS2 first term Chemistry questions with options and answers:
What is the chemical symbol for gold?
A) Au
B) Ag
C) Fe
D) Cu
Answer: A) Au
Which gas is most abundant in the Earth’s atmosphere?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: B) Nitrogen
What is the pH value of a neutral substance?
A) 7
B) 5
C) 10
D) 2
Answer: A) 7
Which element has the chemical symbol ‘O’?
A) Oxygen
B) Osmium
C) Oxide
D) Ozone
Answer: A) Oxygen
What is the formula for methane?
A) CH4
B) CO2
C) H2O
D) C6H12O6
Answer: A) CH4
What is the process of converting a gas into a liquid called?
A) Sublimation
B) Condensation
C) Evaporation
D) Melting
Answer: B) Condensation
Which metal is known as quicksilver?
A) Silver
B) Mercury
C) Gold
D) Aluminum
Answer: B) Mercury
What is the chemical formula for sodium chloride?
A) NaCl
B) HCl
C) NaOH
D) Na2CO3
Answer: A) NaCl
Which gas is responsible for the greenhouse effect?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: C) Carbon dioxide
What is the SI unit of pressure?
A) Pascal
B) Newton
C) Joule
D) Watt
Answer: A) Pascal
Which of the following is a noble gas?
A) Helium
B) Chlorine
C) Sulfur
D) Nitrogen
Answer: A) Helium
What is the chemical formula for water?
A) H2O2
B) CO2
C) H2O
D) CH4
Answer: C) H2O
Which gas is evolved during photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Hydrogen
D) Nitrogen
Answer: A) Oxygen
What is the chemical symbol for iron?
A) Ir
B) Fe
C) Au
D) Ag
Answer: B) Fe
Which acid is found in lemons?
A) Sulfuric acid
B) Citric acid
C) Hydrochloric acid
D) Acetic acid
Answer: B) Citric acid
What is the main component of natural gas?
A) Methane
B) Ethane
C) Propane
D) Butane
Answer: A) Methane
Which element is essential for human bone formation?
A) Calcium
B) Iron
C) Sodium
D) Potassium
Answer: A) Calcium
What is the chemical symbol for silver?
A) Au
B) Ag
C) Si
D) Sr
Answer: B) Ag
In a chemical reaction, what does the arrow represent in a chemical equation?
A) Addition
B) Subtraction
C) Reaction
D) Transformation
Answer: C) Reaction
Which gas is produced when acids react with metals?
A) Oxygen
B) Hydrogen
C) Nitrogen
D) Carbon dioxide
Answer: B) Hydrogen.
