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प्रश्न
Give two examples of the following substance.
Building materials
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उत्तर
Two examples of Building materials:
1. Cement
2. Steel
3. Glass
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संबंधित प्रश्न
Give two examples of the following substance.
Food preservatives
What is the contribution of chemistry in following field?
Clothing
What is the contribution of chemistry in following field?
Medicines
Name the scientists who discovered the following:
Safety lamp
Food items like jams and pickles are protected by using ___________.
Write True or False against the following statement.
D.D.T. is an important fertiliser:
State the contributions of John Dalton – towards the development of Chemistry.
Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
Food processing is an important procedure for obtaining marketable food products.
Select the correct name from the choices given below for the following case.
A synthetic fibre used in clothing.
