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JEE Main201912 Apr 2019Evening ShiftChemistrySome Basic Concepts of ChemistryActual

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

Options

  1. A24 g of carbon and 1 g of hydrogen
  2. B18 g of carbon annd 7 g of hydrogen
  3. C22 g of carbon and 3 g of hydrogen
  4. D20 g carbon and 5 g of hydrogen

Correct answer

A. 24 g of carbon and 1 g of hydrogen

Step-by-step solution

2   m o l e of C O 2 contains 2   m o l e of carbon, Hence weight of carbon = 2 × 12 = 24   g . mass of Hydrogen = 25 - 24 = 1   g r a m

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