Home
Class 12
CHEMISTRY
An organic compound made of C, H and N c...

An organic compound made of C, H and N contains 20% of nitrogen. Its molecular weight is

A

70

B

140

C

100

D

65

Text Solution

Verified by Experts

The correct Answer is:
A
`%" of N"=("Mass of N")/("Molecular mass of compound")xx100`
the compound must contain at least one N-atom.
Hence, `20=(14)/("Molecular mass")xx100`
`"or Molecular mass"=(14)/(20)xx100=70`
Note. If two N atoms are present in the molecule, molecular mass would be 140.
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    PRADEEP|Exercise Competition (FOCUS) JEE (Main and Advanced)/Medical Entrance SPECIAL (II. Multiple Choice Question )|4 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    PRADEEP|Exercise Competition (FOCUS) JEE (Main and Advanced)/Medical Entrance SPECIAL (III. Multiple Choice Question )|6 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    PRADEEP|Exercise ANALYTICAL QUESTIONS AND PROBLEMS WITH ANSWERS/SOLUTIONS (PROBLEMS)|20 Videos

  • SOLUTIONS

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|31 Videos

  • SURFACE CHEMISTRY

    PRADEEP|Exercise IMPORTANT QUESTIONS (FOR BOARD EXAMINATION)|28 Videos

Similar Questions

Explore conceptually related problems

An organic compound made up of C, H , and N contains 20%N . The molecular mass of the organic compound is

An oxide of nitrogen contains 30.43% of nitrogen. The molecular weight of the compound is equal to 92 a.m.u. Calculate the molecular formula of the compound.

A compound has 20% of nitrogen by weight. If one molecule of the compound contains two nitrogen atoms, the molecular weight of the compound is

A substance is found to contain 7 % nitrogen. The minimum molecular weight of it, is

PRADEEP-SOME BASIC CONCEPTS OF CHEMISTRY-Competition (FOCUS) JEE (Main and Advanced)/Medical Entrance SPECIAL (I. Multiple Choice Question )
  1. A mixture of gases contains H(2) and O(2) gases in the ratio of 1:4 (w...

    Text Solution

    |

  2. Suppose the elements X and Y combine to form two compounds of XY(2) an...

    Text Solution

    |

  3. An organic compound made of C, H and N contains 20% of nitrogen. Its m...

    Text Solution

    |

  4. Percentage of Se in peroxidase anhydrase enzyme is 0.5% by weight (at....

    Text Solution

    |

  5. An alkaloid contains 17.28% of nitrogen and it's molecular mass is 162...

    Text Solution

    |

  6. The crystalline salt Na(2)SO(4).xH(2)O on heating loses 55.9 % of its ...

    Text Solution

    |

  7. 0.1 mol of a carbonhydrate with empirical formula CH(2)O contains 1 g ...

    Text Solution

    |

  8. The most abundant elements by mass in the body of a healthy human adul...

    Text Solution

    |

  9. The ration of mass per cent of C and H of an organic compound (C(x)H(y...

    Text Solution

    |

  10. In Haber process 30 litre of dihydrogen and 30 litres of dinitrogen we...

    Text Solution

    |

  11. For the formation of 3.65 g of hydrogen chloride gas, what volumes of ...

    Text Solution

    |

  12. The mass of carbon anode consumed (giving only carbon dioxide) in the ...

    Text Solution

    |

  13. The dehydration yield of cyclohexanol to cyclohexene is 75%. What woul...

    Text Solution

    |

  14. A mixture of CO(2) and CO is passed over red hot graphite when 1 mole...

    Text Solution

    |

  15. 3.28 g of a sample of pure copper when heated in presence of oxygen of...

    Text Solution

    |

  16. An ore contains 1.24% of the mineral argentite, Ag(2)S by mass. How ma...

    Text Solution

    |

  17. The decomposition of cetian mass of CaCO(3) gave 11.2dm^(3) of CO(2) g...

    Text Solution

    |

  18. 20.0 g of magnesium carbonate sample decomposes on heating to give car...

    Text Solution

    |

  19. A mixture of CaCl(2) and NaCl weighing 4.44 is treated with sodium car...

    Text Solution

    |

  20. A mixture of ethane and ethene occupies 41 L at atm and 500 K. The mix...

    Text Solution

    |