Advertisements
Advertisements
प्रश्न
Give reasons for the following
Ordinary soap is wasted in hard water.
Advertisements
उत्तर
Ordinary soap is wasted in hard water because hard water is one which does not lather with soap.
संबंधित प्रश्न
Give two examples of the following substance.
Food preservatives
What is the contribution of chemistry in following field?
Industry
What is the contribution of chemistry in following field?
Cosmetics
Name the scientists who discovered the following:
Elements
Write True or False against the following statement.
Antibiotics are used as preservatives:
Choose the correct alternative from the choices given below for the following statement:
Mortar is used as a
Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
Give reasons for the following
Titanium dioxide is an important ingredient in cosmetics.
Food processing is an important procedure for obtaining marketable food products.
Give reasons for the following
All medicines must be taken under proper doctors' supervision and in the correct dose.
