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The primitive atmosphere was reducing in...

The primitive atmosphere was reducing in nature.
Free oxygen was absent in the primitive atmosphere.

A

If both (A) and (R ) are true and (R ) is the correct explanation of (A).

B

If both (A) and (R ) are true but (R ) is not the correct explanation of (A).

C

If (A) is true but (R ) is false.

D

If both (A) and (R ) are false.

Text Solution

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The correct Answer is:
A
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Primitive atmosphere was reducing/oxidising.

Free ____ gas was ___ in the primitive earth's atmosphere.

Knowledge Check

  • Primitive atmoshpere was reducing because:

    A
    Hydrogen atoms were few
    B
    Hydrogen, atoms were active and in greater number
    C
    Nitrogen atom were more
    D
    Oxygen atoms were more

  • Gases found in primitive atmosphere are

    A
    `CH_(4), NH_(3), H_(2), H_(2)O`
    B
    `CH_(4), NH_(3), CO_(2), H_(2)O`
    C
    `CH_(4), H_(2)O, CO_(2)`
    D
    `CH_(2), O_(2), CO_(2)`

  • Gases present in the primitive earth were

    A
    methane, ammonia, oxygen and water vapour
    B
    methane, ammonia, carbon dioxide and chlorine
    C
    methane, ammonia, hydrogen, carbon dioxide
    D
    methane, ammonium oxide, hydrogen peroxide, carbon dioxide

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    Gases found in primitive atmosphere were,

    Assertion : The primitive atmosphere was reducing one i.e., without oxygen. Reason : In the atmosphere, oxygen was involved in forming ozone.

    Which was not present in primitive atomsphere?

    The most primitive of monerans are

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