Home
Class 12
CHEMISTRY
Percentage of O2 by volume in the atmosp...

Percentage of `O_2` by volume in the atmosphere is

A

18

B

19

C

24.15

D

20.9

Text Solution

Verified by Experts

The correct Answer is:
D
Oxygen is about 21% by volume in the atmosphere.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THE OXYGEN FAMILY

    DINESH PUBLICATION|Exercise REVISION|143 Videos

  • THE OXYGEN FAMILY

    DINESH PUBLICATION|Exercise Selected Straight objective|34 Videos

  • THE NOBLE GASES

    DINESH PUBLICATION|Exercise Brain Teasers - 20|40 Videos

  • THE P-BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise Brain Storming Multiple Choice Questions (McQs)|9 Videos

Similar Questions

Explore conceptually related problems

20.0 mL of a mixture of oxygen (O_(2)) and ozone (O_(3)) was heated till ozone was completely decomposed. The mixture of cooling was found to have a volume of 21 mL. Calculate the percentage of ozone by volume in the mixture.

Give the percentage of O_(2) is atmospheric and alveolar air.

Knowledge Check

  • What is the percentage of oxygen by volume in the atmosphere?

    A
    `14%`
    B
    `23%`
    C
    `20.9%`
    D
    `79%`

  • The percentage of CO_2 in the atmosphere is

    A
    3%,
    B
    0.003
    C
    0.03%,
    D
    0.4

  • The CO_(2) content by volume, in the atmospheric air is about

    A
    `3.34%`
    B
    `4%`
    C
    `0.0314%`
    D
    `2.1%`

    • Similar Questions

    Explore conceptually related problems

    The percentage of nitrogen present in earth's atmosphere is

    A certain volume of H_(2) effuses from an apparatus in one minute. The same volume of ozonised oxygen (O_(3)+O_(2)) mixture took 246 sec to effuse from appratus under identical conditions. Percentage of O_(2) by mole in mixture is:

    The correct percentage of CO_(2) in atmosphere is

    For the conversion of O_(2) to O_(3) in the atmosphere, nitric oxide is

    Arrange the constituent gases of the atmosphere in descendingorder of their percentage to the total composition of the atmosphere. 1. Nitrogen 2. Oxygen 3. Argon 4. Carbon dioxide

    Home
    Profile