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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.
Fungicides
Name the scientists who discovered the following:
Atoms
Name the scientists who discovered the following:
Oxygen
Name the scientists who discovered the following:
Elements
Fill in the blank:
Inert gases were discovered by ___________
Write True or False against the following statement.
Antibiotics are used as preservatives:
Write True or False against the following statement.
D.D.T. is an important fertiliser:
State the contributions of Dimitri Mendeleev
Explain the term ‘cosmetics’ ‘talc’. Name a few main ingredients in cosmetics the role they play.
Give reasons for the following
Ordinary soap is wasted in hard water.
