Multiple choice

Which statement(s) is/are true?

  1. M2SO4.10H2O is known as Glauber's salt.
  2. Carbonate of metal M is used as an antacid.
  3. Cooling M2SO4.10H2O below 285K results in M2SO4.3H2O.

    When a metal M is heated in excess of air, it gives two products A and B. A is pale blue in colour. B on reaction with liquid ammonia gives C. B on rection with water produces D. B  dispropotionates to A on heating at 670K.

  1. 1, 2, 3

  2. 1, 2

  3. 1, 3

  4. 2, 3

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Statement 3 is wrong besause cooling M2SO4.10H2O below 285K results in M2SO4.7H2O.

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