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1. Some basic concept of chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry1. Some basic concept of chemistry1 Mark
MCQ
Hydrogen combines with oxygen to form ${H_2}O$ in which $16 \,g$ of oxygen combine with $2 \,g$ of hydrogen. Hydrogen also combines with carbon to form $C{H_4}$ in which $2 \,g$ of hydrogen combine with $6\, g$ of carbon. If carbon and oxygen combine together then they will do show in the ratio of
  • ✓
    $6 : 16$ or $12 : 32$
  • B
    $6:18$
  • C
    $1:2$
  • D
    $12:24$
✓

Answer

Correct option: A.
$6 : 16$ or $12 : 32$
a
In $H _2 O$, ratio of masses of $O$ and $H =16: 2$

In $CH _4$, ratio of masses of $C$ and $H =6: 2$

According to law of reciprocal proportions,

The ratio of masses of $C$ and $O=6: 16$

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