HARD
7th CBSE
IMPORTANT
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Write a short note on hydrochloric acid.
Important Questions on Chemistry in Daily Life
HARD
7th CBSE
IMPORTANT
What are fertilisers? How are they classified? Explain the classification of fertilisers with an example.
HARD
7th CBSE
IMPORTANT
Name three organic compounds which are used as food materials. Mention their constituents and uses.
HARD
7th CBSE
IMPORTANT
How is cement manufactured? Mention the areas of application of cement.
HARD
7th CBSE
IMPORTANT
Carbonate of a metal with atomic number , on thermal decomposition, forms corresponding oxide and a gas. Identify the metallic carbonate and the products.
HARD
7th CBSE
IMPORTANT
Carbonate of a metal with atomic number , on thermal decomposition, forms corresponding oxide and a gas. The gas liberated on passing through water under pressure forms a homogenous mixture which helps in the digestion of food. Give reasons.
HARD
7th CBSE
IMPORTANT
How is glass manufactured? Mention different types of glass, their ingredients, properties and application.
HARD
7th CBSE
IMPORTANT
What are the different kinds of soap? What are the raw materials used for the manufacture of different kinds of soap? Mention their applications.
HARD
7th CBSE
IMPORTANT
Name the metal which is used in the manufacture of high voltage electric transmission wire.
