Certain organic compound on combustion produces three gaseous oxides A, B and C. A and C turned lime water…

Certain organic compound on combustion produces three gaseous oxides A, B and C. A and C turned lime water milky, B turned anhydrous C u S O 4 blue and C turned K 2 C r 2 O 7 solution green. The elements present in organic compounds are
  1. C, N, O
  2. C, H, S
  3. C, H only
  4. C, S only

Solution

The elements present in organic compounds are C, H, S and their oxides are C O 2 , H 2 O , S O 2 respectively.
C O 2 turns lime water milky, water turns anhydrous copper sulphate blue and S O 2 being reducing agent can reduce K 2 C r 2 O 7 into green coloured C r 3 + compound C r C l 3 etc. .

Asked in: JEE-TOPICTESTS-CHEMISTRY

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