SS1 First Term Chemistry Past Questions And Answers
20 SS1 first term 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 makes up the majority of Earth’s atmosphere?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: B) Nitrogen
Question: What is the pH of a neutral solution?
A) 7
B) 14
C) 0
D) 1
Answer: A) 7
Question: What is the chemical formula for water?
A) H2O2
B) CO2
C) H2O
D) CH4
Answer: C) H2O
Question: Which element is essential for organic compounds?
A) Nitrogen
B) Carbon
C) Oxygen
D) Hydrogen
Answer: B) Carbon
Question: What type of bond is formed between sodium and chlorine in NaCl?
A) Ionic
B) Covalent
C) Metallic
D) Hydrogen
Answer: A) Ionic
Question: What is the chemical symbol for helium?
A) H
B) He
C) O
D) Ne
Answer: B) He
Question: Which gas is produced during photosynthesis?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
Answer: A) Oxygen
Question: What is the SI unit of temperature?
A) Kelvin
B) Celsius
C) Fahrenheit
D) Joule
Answer: A) Kelvin
Question: What is the chemical symbol for iron?
A) I
B) Fe
C) Ir
D) In
Answer: B) Fe
Question: Which gas is responsible for the greenhouse effect?
A) Oxygen
B) Carbon dioxide
C) Methane
D) Nitrogen
Answer: B) Carbon dioxide
Question: What is the smallest unit of an element that retains its chemical properties?
A) Molecule
B) Atom
C) Compound
D) Ion
Answer: B) Atom
Question: Which process involves a substance changing directly from a solid to a gas?
A) Sublimation
B) Condensation
C) Vaporization
D) Deposition
Answer: A) Sublimation
Question: What is the chemical formula for methane?
A) CH4
B) CO2
C) H2O
D) C6H12O6
Answer: A) CH4
Question: What is the formula for sulfuric acid?
A) HCl
B) H2SO4
C) NaOH
D) HNO3
Answer: B) H2SO4
Question: Which of the following is a noble gas?
A) Neon
B) Sodium
C) Chlorine
D) Oxygen
Answer: A) Neon
Question: What is the chemical symbol for potassium?
A) K
B) P
C) Ka
D) Ko
Answer: A) K
Question: In a chemical reaction, the total mass of the reactants is equal to the total mass of the…
A) Elements
B) Compounds
C) Products
D) Catalysts
Answer: C) Products
Question: What is the chemical formula for table salt?
A) Na2O
B) KCl
C) NaCl
D) HCl
Answer: C) NaCl
Question: Which element is the most abundant in Earth’s crust?
A) Oxygen
B) Silicon
C) Aluminum
D) Iron
Answer: A) Oxygen
