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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

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