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Air is a mixture of various gases. One o...

Air is a mixture of various gases. One of the gases is 21% part of the air and is essential for the survival of human beings. This gas is

A

nitrogen

B

Oxygen

C

ozone

D

argon

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • Statement: The taste of food contributes to the intake of nourishment which is essential for the survival of human beings. Assumptions: I. Human beings take food for the enjoyment of its taste. II. Human beings experience the taste of food.

    A
    if only assumption is implicit,
    B
    if only assumption II implicit,
    C
    if either l or II is implicit,
    D
    if neither I nor II is implicit, and d if both I and II are implicit

  • In a mixture of gases, the pressure exerted by the individual gas is called

    A
    total pressure
    B
    partial pressure
    C
    individual pressure
    D
    osmotic pressure

  • Which of the following gases are heavier than air ?

    A
    Argon
    B
    Fluorine
    C
    Neon
    D
    Moist air

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