1.

Assertion (A) : Washing soda (Na_(2)CO_(3)) is a compounds. Reason (R ) : Sodium retains its property in washing soda.

Answer»

Both A and R are true and R is the correct explanation for A.
Both A and R are true but R is not the correct explanation for A.
A is true and R FALSE.
A is false and R is true.

Solution :Washing soda is a compound since the constituents combine chemically.
In a compound, constituents do not RETAIN their properties. Since sodium is the constituent of washing soda `(Na_(2)CO_(3))` it does not retain its properties


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