Assertion (A) : Sodium metal is stored under Kerosene. Reason (R) : Metallic sodium melts when exposed to air.

Question

(a) Both A and R are true and R is the
correct explanation of A.
(b) Both A and R are true but R is not the
correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.

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Priyanka QNA 3 years 2021-12-06T14:18:12+00:00 1 Answer 57 views Enlightened 0

Answer ( 1 )

  1. Priyanka QNA
    0
    2021-12-06T14:18:51+00:00
    Reply

    Ans : (c) Assertion (A) is true but reason
    (R) is false.
    Sodium is a very reactive metal. It is kept
    in kerosene to prevent it from coming in
    contact with oxygen and moisture present. If this happens, it
    will react with the
    moisture present in air and form
    sodium hydroxide.
    This is a strongly exothermic reaction,
    and lot of heat
    is generated.

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