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ICSE Class 10 Chemistry Question 4 of 19

Solved 2017 Question Paper ICSE Class 10 Chemistry — Question 10

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10
Question

Question 1(f)

(i) Draw the structural formula for each of the following:

  1. 2, 3 – dimethyl butane
  2. Diethyl ether
  3. Propanoic acid

(ii) From the list of terms given, choose the most appropriate term to match the given description.

(calcination, roasting, pulverisation, smelting)

  1. Crushing of the ore into a fine powder.
  2. Heating of the ore in the absence of air to a high temperature.
Answer

1. 2, 3 – dimethyl butane :

Draw the structural formula for 2, 3 – dimethyl butane. Organic Chemistry, Simplified Chemistry Dalal Solutions ICSE Class 10

2. Diethyl ether :

Draw the structural formula for Diethyl ether. Organic Chemistry, Simplified Chemistry Dalal Solutions ICSE Class 10

3. Propanoic acid :

Draw the structural formula for Propanoic acid. Organic Chemistry, Simplified Chemistry Dalal Solutions ICSE Class 10

(ii) The matching terms are:

  1. Crushing of the ore into a fine powder — Pulverisation
  2. Heating of the ore in the absence of air to a high temperature — Calcination