Chemistry, asked by radharanikarmakar0, 10 months ago

Answer the following questions in one or two words/sentences:

1. Name the following:

(a) A metal that is brittle

(b) A metal that is a bad conductor of electricity

(c) A metal that suffers from corrosion

(d) A metal that is the most abundant on the Earth's crust

(e) A metal that is used in fireworks

2. How can be rusting prevented (5 points)?

3. What is rust? Write the chemical formula for rust.

4. What is galvanization?

5. What are the characteristic features of chlorine gas (colour + odour)?

6. Write one use of each of the following:

(a) Helium. (b) Neon. (c) Argon

7. Justify the following statements:

(a) Silver can be used to make electrical cables.

(b) Sodium can be cut with a knife.

Answers

Answered by Anonymous

3)=Fe2O3

The chemical formula of rust is Fe2O3. This is an oxide of iron. Formation of rust occurs when the iron is exposed longer time to the water in presence of sun and air or in absence of sun forms rust on iron. Rust is generally brownish red in colour.
4)=Galvanization or galvanizing (also spelled galvanisation or galvanising) is the process of applying a protective zinc coating to steel

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Answered by Anonymous

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The chemical formula of rust is Fe2O3. This is an oxide of iron. Formation of rust occurs when the iron is exposed longer time to the water in presence of sun and air or in absence of sun forms rust on iron. Rust is generally brownish red in colour.

4)=Galvanization or galvanizing (also spelled galvanisation or galvanising) is the process of applying a protective zinc coating to steel

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Hope it helps... ¯\_(ツ)_/¯

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