ICSE Class 10 Chemistry 2023 Solved Paper

Arrange the following according to the instructions given in brackets :

Question : 79 of 88

Marks: +1, -0

{\C}_2 {\H}_2, {\C}_3 {\H}_6, {\CH}_4, {\C}_2 {\H}_4

In the increasing order of the molecular weight)

Solution:

{\CH}_4< {\C}_2 {\H}_2< {\C}_2 {\H}_4< {\C}_3 {\H}_8

Molecular weight of

\; {\CH}_4=12+4=16

\; {\C}_2 {\H}_2=12 × 2+2 × 1=26

\; {\C}_2 {\H}_4=12 × 2+4=28

\; {\C}_3 {\H}_8=12 × 3+8=44

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