Question

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Answer 1

Answer:

Acid turns blue litmus red and bases turns red litmus blue

Answer 2

Answer:

Question 2 ..

Explanation:

Manure --

1. Prepared in fields.

2. Provides a lot of humus to soil.

3. Is relatively less rich in plant nutrition.

4. Is a natural substance obtained by the decomposition of cattle dung and plant residues.

Fertilizers ---

1. Is a man made inorganic salt.

2. Prepared in factories.

3. Does not provide any humus to soil.

4. Are very rich in plant nutrition like nitrogen, phosphorus and potassium.

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