Class X Chemistry – MCQ Practice Questions

Class X Chemistry – MCQ Practice Questions

Chapter 1: Chemical Reactions and Equations
  1. Which of the following is a displacement reaction?
    a) AgNO₃ + NaCl → AgCl + NaNO₃
    b) Zn + H₂SO₄ → ZnSO₄ + H₂
    c) HCl + NaOH → NaCl + H₂O
    d) CaCO₃ → CaO + CO₂
    Answer: b) Zn + H₂SO₄ → ZnSO₄ + H₂
  2. Which of the following statements is true for a redox reaction?
    a) Only oxidation occurs
    b) Only reduction occurs
    c) Both oxidation and reduction occur simultaneously
    d) None of the above
    Answer: c) Both oxidation and reduction occur simultaneously
  3. What type of reaction is the rusting of iron?
    a) Combination
    b) Displacement
    c) Oxidation
    d) Neutralization
    Answer: c) Oxidation
Chapter 2: Acids, Bases and Salts
  1. Which of the following is a basic salt?
    a) NaCl
    b) CH₃COONa
    c) NH₄Cl
    d) Na₂CO₃
    Answer: d) Na₂CO₃
  2. The pH value of lemon juice is approximately:
    a) 2
    b) 7
    c) 9
    d) 13
    Answer: a) 2
  3. Which gas is released when zinc reacts with dilute hydrochloric acid?
    a) Oxygen
    b) Nitrogen
    c) Hydrogen
    d) Carbon dioxide
    Answer: c) Hydrogen
Chapter 3: Metals and Non-Metals
  1. Which of the following metals is most reactive?
    a) Copper
    b) Iron
    c) Zinc
    d) Potassium
    Answer: d) Potassium
  2. Which of the following is not a property of non-metals?
    a) Poor conductors of heat
    b) High melting point
    c) Brittle
    d) Gain electrons to form anions
    Answer: b) High melting point
  3. Which gas is produced when metals react with acids?
    a) Hydrogen
    b) Oxygen
    c) Nitrogen
    d) Carbon dioxide
    Answer: a) Hydrogen
Chapter 4: Carbon and Its Compounds
  1. Which of the following is the correct IUPAC name for CH₃CH₂OH?
    a) Methanol
    b) Ethanol
    c) Ethanoic acid
    d) Propanol
    Answer: b) Ethanol
  2. Which property of carbon leads to the formation of a large number of compounds?
    a) Catenation
    b) Combustion
    c) Reduction
    d) Isomerism
    Answer: a) Catenation
  3. Soaps do not work well with hard water because:
    a) They dissolve completely
    b) They react with calcium and magnesium ions
    c) They form alcohol
    d) They cause rusting
    Answer: b) They react with calcium and magnesium ions
Chapter 5: Periodic Classification of Elements
  1. In the modern periodic table, elements are arranged in order of their:
    a) Atomic mass
    b) Atomic number
    c) Number of neutrons
    d) Number of isotopes
    Answer: b) Atomic number
  2. Which of the following elements belongs to group 17?
    a) Oxygen
    b) Neon
    c) Chlorine
    d) Sodium
    Answer: c) Chlorine
  3. As we move from left to right in a period, the metallic character of elements:
    a) Increases
    b) Decreases
    c) Remains the same
    d) First increases, then decreases
    Answer: b) Decreases