NCERT Solutions of Metals and Non-metals Class 10
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Metals and Non-metals

Solution of NCERT Exemplar Problems

Exemplar Problems - Multiple Choice Questions (Part 2)

Question: 6 - What happens when calcium is treated with water?

  1. It does not react with water
  2. It reacts violently with water
  3. It reacts less violently with water
  4. Bubbles of hydrogen gas formed stick to the surface of calcium
  1. (i) and (iv)
  2. (ii) and (iii)
  3. (i) and (ii)
  4. (iii) and (iv)

Answer: (d) (iii) and (iv)

Question: 7 - Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?

  1. H2SO4
  2. HCl
  3. HNO3
  4. All of these

Answer: (c) HNO3

Question: 8 - The composition of aqua-regia is

  1. Dil.HCl : Conc. HNO3    3 : 1
  2. Conc.HCl : Dil. HNO3 :    3 : 1
  3. Conc.HCl : Conc.HNO3   &Nbsp; 3 : 1
  4. Dil.HCl : Dil.HNO3     3 : 1

Answer: (c) Conc. HCl : Conc. HNO3    3 : 1

Question: 9 - Which of the following are not ionic compounds?

  1. KCl
  2. HCl
  3. CCl4
  4. NaCl
  1. (i) and (ii)
  2. (ii) and (iii)
  3. (iii) and (iv)
  4. (i) and (iii)

Answer: (b) (ii) and (iii)

Question: 10 - Which one of the following properties is not generally exhibited by ionic compounds?

  1. Solubility in water
  2. Electrical conductivity in solid state
  3. High melting and boiling points
  4. Electrical conductivity in molten state

Answer: (b) Electrical conductivity in solid state


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NCERT Solutions of Metals and Non-metals Class 10
<< Solution of NCERT Exemplar Problems - MCQs (Part 1)Solution of NCERT Exemplar Problems - MCQs (Part 3) >>

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