Advertisements
Advertisements
प्रश्न
Give a comparative difference between soaps and detergents. Give a reason. why detergents have an advantage over soap.
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 science?
What kind of experiments did Alchemists do?
Choose the correct alternative from the choices given below for the following statement:
Trinitrotoluene is used as
State the functions of the following basic glass apparatus:
Round bottom flask
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
State the method used for collecting the following gas-
Ammonia – a gas highly soluble in water and lighter than air
‘Alchemists are older words for Chemists’. Discuss the statement in brief.
State what are – ‘stain removals’. Name three important stain removers & give their prime functions.
Select the correct name from the choices given below for the following case.
Predecessors to the modern Chemist who created the ‘Philosopher's stone’.
A philosopher’s stone is not exactly a stone.
