Name the solution used for removing grease stains from woolen clothes.

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Solution

The aqueous solution of Ammonia( $N H_{3}$ ) can be used to remove fats and grease present in clothes.
The aqueous Ammonia can dissolve these impurities from clothes.
The reaction is, $o i l / g r e a s e (s) + \underset{A m m o n i a}{N H_{3} (l)} \to \underset{s o l u b l e i n w a t e r}{O i l / g r e a s e (l)}$
So, the solution used to remove stains and grease from woolen clothes is Ammonia solution.

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Give reasons for the following :

(a) Liquid ammonia is used as a refrigerant in ice plants.

(b) Aqueous solution of ammonia is used for removing grease stains from woollen clothes.

(d) Aqueous solution of ammonia conducts electricity.

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