Grease stains are removed from clothes by using ________.

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Solution

Grease stains contain fats or oily substances in them.
Chemically, these are non-polar substances.
According to the concept of like dissolves like, a non-polar substance is dissolved in a non-polar solvent and a polar substance is dissolved in a polar solvent.
As grease is non-polar, it gets dissolved in petrol which is also non-polar and hence leaves the clothes. Moreover, petrol is volatile and evaporates due to which it is used in dry-cleaning of clothes.
Therefore, grease stains are removed from clothes by using petrol.

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Similar questions

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.

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

X + H_{2} O \to Y

Y

X

Y

Give reasons for the following:
Ammonia solution is used to remove oil and grease stains from clothes

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