Home
Class 12
CHEMISTRY
The molecular weight of a gas is 45. Its...

The molecular weight of a gas is `45`. Its density at STP is

A

22.4

B

11.2

C

5.7

D

`2.0`

Text Solution

Verified by Experts

The correct Answer is:
D

The density of gas `=("molecular wt. of metal")/("volume")`
`=45/22.4=2" gm litre"^(-1)`
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) The mole concept|43 Videos
  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) Chemical stochiometry|42 Videos
  • SOME BASIC CONCEPTS OF CHEMISTRY

    ERRORLESS |Exercise JEE Section (Matrix Match type questions)|3 Videos
  • SOLUTION

    ERRORLESS |Exercise JEE SECTION (JEE (Advanced)2018) (Numeric answer type questions)|3 Videos
  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS |Exercise JEE section (JEE (Advanced) 2018) Numeric answer type questions|2 Videos

Similar Questions

Explore conceptually related problems

What is the molecular weight of a gas whose density 40^(@)C and 785 mm of Hg pressure is 1.3 g L^(-1) ?

If 'v' is the velocity of sound in a gas , then 'v' is directly proportional to (here M , d and T represents molecular weight of gas , density of gas and its temperature , respectively.)

Molecular mass of a gas is 78 . Its density at 98 ^(@)C and 1 atm will be

The density of gas A is twice that of B at the same temperature the molecular weight of gas B is twice that of A. The ratio of pressure of gas A and B will be :

The density of a gas A is thrice that of a gas B at the same temperature. The molecular weight of gas B is twice that of A. What will be the ratio of the pressure acting on B and A?

Calcaulate the molecular weight of HF , if density of HF gas is 3.17 g//L at 300K and 1.0 atm . Comment of the result .

The vapour density of a gas A is twice that of a gas B. If the molecular weight of B is M, the molecular weight of A will be:

ERRORLESS -SOME BASIC CONCEPTS OF CHEMISTRY-Ordinary Thinking (Objective Questions) Atomic, Molecular and Equivalent masses
  1. 100 mL of PH(3) on decomposition produced phosphorus and hydrogen. The...

    Text Solution

    |

  2. Which of the following has least mass

    Text Solution

    |

  3. The molecular weight of a gas is 45. Its density at STP is

    Text Solution

    |

  4. A bivalent metal has an equivalent mass of 32. The molecular mass of t...

    Text Solution

    |

  5. 1 amu is equal to

    Text Solution

    |

  6. 1.25g of a solid dibasic acid is completely neutralised by 25mL of 0.2...

    Text Solution

    |

  7. 1.24 g P is present in 2.2 g

    Text Solution

    |

  8. The atomic weights of two alements A and B are 40 and 80 reapectively....

    Text Solution

    |

  9. If N(A) is Avogadro's number then number of valence electrons in 4.2 g...

    Text Solution

    |

  10. The number of molecule at NTP in 1 ml of an ideal gas will be

    Text Solution

    |

  11. The specific heat of a metal os 0.16 its approximate atomic weight wou...

    Text Solution

    |

  12. What volume of NH(3) gas at STP would be needed to prepare 100 ml of 2...

    Text Solution

    |

  13. Caffeine has a molecular weight of 194. If it contains 28.9 % by mass ...

    Text Solution

    |

  14. A 400 mg iron capsule contains 100 mg of ferrous fumarate, (CHCOO)(2)F...

    Text Solution

    |

  15. A gaseous mixture contain CH(4) and C(2)H(6) in equimolecular proporti...

    Text Solution

    |

  16. One gram of hydrogen is found to combine with 80 g of bromine one gram...

    Text Solution

    |

  17. Assertion: Molecular weight of oxygen is 16. Reason: Atomic weight o...

    Text Solution

    |

  18. Assertion : Equivalent weight of a base =("Molecular weight")/("Acidit...

    Text Solution

    |

  19. Assertion : One atomic mass unit (amu) is mass of an atom equal to exa...

    Text Solution

    |

  20. Assertion : Molecular mass of A is M/4 if the molecular mass of B is M...

    Text Solution

    |