JEE Main 201912 AprilEvening Shift

Exam: JEE Main
Year: 2019
Date: 12 April
Shift: Evening Shift
Subject: Chemistry
Chapter: Some Basic Concepts of Chemistry

JEE Main 2019 · 12 April · Evening Shift · Chemistry · Some Basic Concepts of Chemistry

25g of an unknown hydrocarbon upon burnig produces 88g of C O _ 2...

25g

of an unknown hydrocarbon upon burnig produces

88g

C{O}_{2}

and

9g

{H}_{2}O .

This unknown hydrocarbon contains: 25g of an unknown hydrocarbon upon burnig produces 88g of C O _ 2 and 9g of H _ 2 O . This unknown hydrocarbon contains:

25g of an unknown hydrocarbon upon burnig produces 88g of C O _ 2 and 9g of H _ 2 O . This unknown hydrocarbon contains:

Options

A $24g$ of carbon and $1g$ of hydrogen
B $18g$ of carbon annd $7g$ of hydrogen
C $22g$ of carbon and $3g$ of hydrogen
D $20g$ carbon and $5g$ of hydrogen

Correct answer

A. $24g$ of carbon and $1g$ of hydrogen

Step-by-step solution

2mole

C{O}_{2}

contains

2mole

of carbon, Hence weight of carbon

= 2 \times 12 = 24g

.
mass of Hydrogen

= 25 - 24 = 1gram

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