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प्रश्न
Give a comparative difference between soaps and detergents. Give a reason. why detergents have an advantage over soap.
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उत्तर
Soaps are substances used with water, for cleaning and washing and are made from a compound of vegetable oils or animal fats along, with sodium or potassium hydroxide and generally have perfumes or colorants, added to them.
Whereas Detergents are synthetic water-soluble cleaning agents that unlike soap (which are prepared from vegetable oils or fats) are prepared from petroleum products along with sodium or potassium hydroxide.
Detergents have an advantage over ordinary soap
- Hard water is one which does not lather with soap, while soft water lathers easily.
- Ordinary soap when rubbed in hard water is wasted and lather forms only after all the insoluble salts in hard water are removed as scum.
- Synthetic detergents do not form scum and lather even in hard water.
संबंधित प्रश्न
What is ‘Philosopher’s stone’?
What is the main difference between alchemy and chemistry?
___________ deals with the study of matter and the changes it undergoes.
Write True or False against the following statement.
Enzymes secreted by our body are chemicals:
State the functions of the following basic glass apparatus:
Hard glass boiling tube
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
State the function of
The wooden handle at the end of the test tube holder.
State the method used for collecting the following gas:
Oxygen – a gas slightly soluble in water.
State the method used for collecting the following gas-
Ammonia – a gas highly soluble in water and lighter than air
Give reasons for the following
Alchemy was considered a pseudoscience.
