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Question

Which of the following methods is generally used for preparing Zn(NO3)2 salt?

1 : Neutralisation - insoluble base & dilute acid
2 : Neutralisation - alkali & dilute acid
3 : Simple displacement - active metal & dilute acid
4 : Direct combination
5 : Precipitation [double decomposition]

A
2
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B
3
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C
4
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D
5
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Solution

The correct option is C 3
Zinc metal with dilute nitric acid gives zinc nitrate.
So, simple displacement-active metal & dilute acid is the correct option for this.

Zn+2HNO3Zn(NO3)2+H2

Hence, the correct option is (B).

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