SS2 Third Term Chemistry Past Questions And Answers
SS2 third term Chemistry questions with options and answers:
What is the chemical formula for hydrochloric acid?
A) H2SO4
B) NaOH
C) HCl
D) CH3COOH
Answer: C) HCl
Which gas is produced during the process of photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Hydrogen
D) Nitrogen
Answer: A) Oxygen
What is the SI unit of electric current?
A) Volt
B) Ampere
C) Ohm
D) Watt
Answer: B) Ampere
Which of the following is a metalloid?
A) Sodium
B) Silicon
C) Oxygen
D) Chlorine
Answer: B) Silicon
What is the chemical symbol for mercury?
A) Mg
B) Hg
C) Me
D) Mn
Answer: B) Hg
Which gas is produced when acids react with bases?
A) Oxygen
B) Hydrogen
C) Nitrogen
D) Water
Answer: D) Water
What is the chemical formula for carbon dioxide?
A) CO2
B) CO
C) C2O
D) CO3
Answer: A) CO2
Which of the following is a greenhouse gas?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: C) Carbon dioxide
What is the chemical symbol for iodine?
A) I
B) In
C) Fe
D) Ir
Answer: A) I
Which process involves the addition of oxygen to a substance?
A) Reduction
B) Oxidation
C) Decomposition
D) Combustion
Answer: B) Oxidation
What is the chemical formula for sulfur dioxide?
A) SO2
B) SO
C) S2O
D) S2O3
Answer: A) SO2
Which gas is responsible for the distinctive smell of rotten fish?
A) Ammonia
B) Hydrogen sulfide
C) Nitrous oxide
D) Methane
Answer: B) Hydrogen sulfide
Which element is the most abundant in the Earth’s crust?
A) Silicon
B) Oxygen
C) Aluminum
D) Iron
Answer: B) Oxygen
What is the chemical symbol for potassium hydroxide?
A) KOH
B) K2O
C) KNO3
D) KH
Answer: A) KOH
Which acid is present in vinegar?
A) Sulfuric acid
B) Nitric acid
C) Acetic acid
D) Hydrochloric acid
Answer: C) Acetic acid
What is the chemical formula for hydrogen peroxide?
A) H2O2
B) HO
C) H2O
D) HCl
Answer: A) H2O2
Which gas is responsible for the smell of rotten eggs?
A) Oxygen
B) Hydrogen
C) Methane
D) Hydrogen sulfide
Answer: D) Hydrogen sulfide
What is the process of conversion of a gas into a liquid called?
A) Condensation
B) Sublimation
C) Evaporation
D) Melting
Answer: A) Condensation
Which element is used in fluorescent light bulbs?
A) Neon
B) Mercury
C) Argon
D) Xenon
Answer: B) Mercury
What is the chemical formula for sodium bicarbonate?
A) NaHCO3
B) Na2CO3
C) NaCl
D) NaOH
Answer: A) NaHCO3.
