Question

Give a reaction to show that metals react with base.
OR
What are different forms of calcium carbonate? Name any two.
2. Why is ‘reuse' considered better than 'recycling' with reference to
management of resources?
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Answer 1

ANSWER-

1. reaction to show metal react with base-

Al + NaOH ---> NaAlO₂ + H₂O

The different forms of Calcium Carbonate are

a. EGG SHELL

b. CHALK

3. Reuse is better than recycle because-

1. Recycle needs some process to use the same material again.

2. Reuse save energy by using material again without any changes.

3. Reuse saves environmental pollution by not creating any waste.

4. Reuse saves cost as same material is used again with any process.