Class 10 Chemistry

Metals and Non-metals

NCERT Exemplar Solutions

Which among the following alloys contain mercury as one of its constituents?

  • Stainless steel
  • Alnico
  • Solder
  • Zinc amalgam
    Answer: (d) Zinc amalgam

Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?

  • Has high melting point
  • Has low melting point
  • Conducts electricity in molten state
  • Occurs as solid
    Answer: (b) Has low melting point

The electronic configurations of three elements X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z — 2, 8, 2. Which of the following is correct?

  • X is a metal
  • Y is a metal
  • Z is a non-metal
  • Y is a non-metal and Z is a metal
    Answer: (d) Y is a non-metal and Z is a metal

Although metals form basic oxides, which of the following metals form an amphoteric oxide?

  • Na
  • Ca
  • Al
  • Cu
    Answer: (c) Al

Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?

  • Diamond
  • Graphite
  • Sulphur
  • Fullerene
    Answer: (b) Graphite

Electrical wires have a coating of an insulting material. The material, generally used is

  • Sulphur
  • Graphite
  • PVC
  • All can be used
    Answer: (c) PVC

Which of the following non-metals is a liquid?

  • Carbon
  • Bromine
  • Phosphorus
  • Sulphur
    Answer: (b) Bromine

Which of the following can undergo a chemical reaction?

  • MgSO4 + Fe
  • ZnSO4 + Fe
  • MgSO4 + Pb
  • CuSO4 + Fe
    Answer: (d) CuSO4 + Fe

Which one of the following figures correctly describes the process of electrolytic refining?

exemplar mcq question 35

Answer: (c)

MCQs (Part 1)

MCQs (Part 2)

MCQs (Part 3)

Short Answer (Part 1)

Short Answer (Part 2)

Long Answer (Part 1)

Long Answer (Part 2)