Question

Which of the following statements is correct?
1 When a salt is dissolved in water neutralisation reaction takes place.
2 KNO3 when dissolved in water will give solution having pH <7.
3 When CuSO, is dissolved in water, it gives a solution having pH <7.
4 Aqueous solution Na2CO3 pH = 7.​

Answer 1

Answer:

3

Explanation:

Answer 2

Answer:

3. When CuSO, is dissolved in water, it gives a solution having pH <7.

Explanation:

It will be happened, because CuSO is acidic in nature.

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