Home
Class 12
CHEMISTRY
The most abundant elements by mass in th...

The most abundant elements by mass in the body of a healthy human adult are:
Oxygen (61.4%), carbon (22.9%), hydrogen (10.0%) and Nitrogen (2.6%)
the weight which a 75 kg person would gain if all `.^(1)H` atoms are replaced by `.^(2)H` atoms is

A

15kg

B

37.5kg

C

7.5kg

D

10kg

Text Solution

Verified by Experts

The correct Answer is:
C
Mass of hydrogen in healthy human audlt `=75xx(10)/(100)`
=7.5kg
if `._(1)^(1)H` isotope is replaced by `._(1)^(2)H` the mass of hydrogen =15g
Net gain in mass `=15kg-7.5kg`
=7.5kg
Promotional Banner

Topper's Solved these Questions

  • BASIC PRINCIPLES

    OP TANDON|Exercise SET-2|7 Videos

  • BASIC PRINCIPLES

    OP TANDON|Exercise LEVEL B set1|52 Videos

  • BASIC PRINCIPLES

    OP TANDON|Exercise PRACTICE PROB.|58 Videos

  • ALDEHYDES AND KETONES

    OP TANDON|Exercise SINGLE INTEGER ANSWER TYPE QUESTIONS|10 Videos

  • BASIC PRINCIPLES OF ORGANIC COMPOUNDS (MECHANISM OF ORGANIC REACTIONS)

    OP TANDON|Exercise SINGLE INTEGER ANSWER TYPE QUESTIONS|4 Videos

Similar Questions

Explore conceptually related problems

A certain alkaloid has 70.8% carbon, 6.2% hydrogen, 4.1% nitrogen and the rest oxgen. What is its empirical formula :

An organic compound containing oxygen, carbon, Hydrogen and nitrogen contains 20% C, 6.7% H and 46.67% N. Its molecular weight was found to be 60. The molecular formula of the compound is

An organic compound contains 40% carbons atom 6.67% hydrogen atoms and remaining oxygen atoms by mass. The empirical formula will be-

The different pure samples of sugar contained 51.4% oxygen, 42.1% carbon and 6.5% hydrogen by weight. This data is supported by _______ .

Adenine is a substituted form of a heterocyclic nitrogenous base Purine. Adenine is found in both polymers DNA and RNA . Adenine is composed of the elements carbon, hydrogen and nitrogen and has molecular mass of 13.5 amu . Upon analysis, it was found that the ratio of % (by w.t. ) of carbon to that of total % (by wt ) of hydrgoen and nitrogen was found to be 4:5 respectively. The ratio of number of N atoms to hydrogen atoms is 1 : 1 . Now, answer the following questions: The amount of glucose (C_(6)H_(12)O_(6)) obtained when all the carbon in 36 mg of adenine is converted into glucose is :

Adenine is a substituted form of a heterocyclic nitrogenous base Purine. Adenine is found in both polymers DNA and RNA . Adenine is composed of the elements carbon, hydrogen and nitrogen and has molecular mass of 13.5 amu . Upon analysis, it was found that the ratio of % (by w.t. ) of carbon to that of total % (by wt ) of hydrgoen and nitrogen was found to be 4:5 respectively. The ratio of number of N atoms to hydrogen atoms is 1 : 1 . Now, answer the following questions: In one molecule of adenine :

In the atomic weight determination, Dalton suggested the formula of water as HO and the composition of water as hydrogen = 12% and oxygen = 87.5%, by weight. What should be the atomic weight of oxygen on H-scale, on the basis of this information?

OP TANDON-BASIC PRINCIPLES-OBJECTIVE QUE.
  1. Volume occupied by one molecule of water (density =1g//cm^(3)) is:

    Text Solution

    |

  2. 80g of oxygen contians as many atoms as in:

    Text Solution

    |

  3. A plant virus consists of uniform cylindrical particles of 150 overset...

    Text Solution

    |

  4. Common salt obtained from sea-water contains 95% NaCl by mass. The app...

    Text Solution

    |

  5. 10g hydrogen and 64 g oxygen were filled in a steel vessel and explode...

    Text Solution

    |

  6. An organic compound made of C , H and N contains 20% nitrogen. What wi...

    Text Solution

    |

  7. Given that the abundances of isotopes .^(54)Fe,.^(56)Fe and .^(57)Fe a...

    Text Solution

    |

  8. The number of atoms in 0.1 mol triatomic gas is: (N(A)=6.02xx10^(23)"m...

    Text Solution

    |

  9. Which of the following quantities has the least number of significant ...

    Text Solution

    |

  10. Prefix giga means:

    Text Solution

    |

  11. Calculate the massof oxygen obtained by complete decomposition of 10kg...

    Text Solution

    |

  12. In the DNA of E coli, the mole ratio of adenine to cytosine is 0.7. if...

    Text Solution

    |

  13. A gaseous hydrocarbon given upon combustion, 0.72g water and 3.08g of ...

    Text Solution

    |

  14. The ratio of masses of oxygen and nitrogen in a particular gaseous mix...

    Text Solution

    |

  15. 3.011xx10^(22) atoms of an element weighs 1:15gm. The atomic mass of t...

    Text Solution

    |

  16. A carbon compound contains 12.8% of carbon, 2.1% of hydrogen and 85.1%...

    Text Solution

    |

  17. At 300 K and 1 atm, 15mL of a gaseous hydrocarbon requires 375mL air c...

    Text Solution

    |

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

    Text Solution

    |

  19. If 3.01xx10^(20) molecules of H(2)SO(4) are removed from 98mg of H(2)S...

    Text Solution

    |

  20. 1g of Mg is burnt with 0.28g of O(2) in a closed vessel. Which reactan...

    Text Solution

    |