NCERT Solutions of Metals and Non-metals Class 10
<< Solution of NCERT Exemplar Problems - MCQs (Part 5)Solution of NCERT Exemplar Problems - MCQs (Part 7) >>

Metals and Non-metals

Solution of NCERT Exemplar Problems

Exemplar Problems - Multiple Choice Questions (Part 6)

Question: 26 - Alloys are homogeneous mixtures of a metal with a metal or nonmetal. Which among the following alloys contain non-metal as one of its constituents?

  1. Brass
  2. Bronze
  3. Amalgam
  4. Steel

Answer: (d) Steel

Question: 27 - Which among the following statements is incorrect for magnesium metal?

  1. It burns in oxygen with a dazzling white flame
  2. It reacts with cold water to form magnesium oxide and evolves hydrogen gas
  3. It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas
  4. It reacts with steam to form magnesium hydroxide and evolves hydrogen gas

Answer: (b) It reacts with cold water to form magnesium oxide and evolves hydrogen gas

Question: 28- Which among the following alloys contain mercury as one of its constituents?

  1. Stainless steel
  2. Alnico
  3. Solder
  4. Zinc amalgam

Answer: (d) Zinc amalgam

Question: 29 - 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?

  1. Has high melting point
  2. Has low melting point
  3. Conducts electricity in molten state
  4. Occurs as solid

Answer: (b) Has low melting point

Question: 30 - 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?

  1. X is a metal
  2. Y is a metal
  3. Z is a non-metal
  4. Y is a non-metal and Z is a metal

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


:
NCERT Solutions of Metals and Non-metals Class 10
<< Solution of NCERT Exemplar Problems - MCQs (Part 5)Solution of NCERT Exemplar Problems - MCQs (Part 7) >>

Metals and Non-metals will be available online in PDF book form soon. The solutions are absolutely Free. Soon you will be able to download the solutions.