Advertisements
Advertisements
प्रश्न
Name the scientists who discovered the following:
Safety lamp
Advertisements
उत्तर
A scientist who discovered Safety lamp: : Sir Humphry Davy
APPEARS IN
संबंधित प्रश्न
Give two examples of the following substance.
Chemical war weapons
What is the contribution of chemistry in following field?
Clothing
What is the contribution of chemistry in following field?
Cosmetics
Name the scientists who discovered the following:
Atoms
State the contributions of John Dalton – towards the development of Chemistry.
Differentiate between natural fibres & synthetic fibres.
Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
Preservatives are added to food or beverages.
Give reasons for the following
Titanium dioxide is an important ingredient in cosmetics.
Give reasons for the following
Cosmetics may contain preservatives, as one of their ingredients.
