Which of the following salt does give positive test for nitrate ion ?

K N O_{3}

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N a N O_{3}

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M g {(N O_{3})}_{2}

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none of these

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Solution

The correct options are
A $N a N O_{3}$
B $K N O_{3}$
D $M g {(N O_{3})}_{2}$
As $K N O_{3}, N a N O_{3}, M g (N O_{3})_{2}$ contains nitrate ion which on making original solution, can dissociate to give nitrate ion, so can give positive test for this nitrate ion.

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Similar questions

Choose the correct answer :

(a) The nitrate salt which does not give a mixture of $N O_{2}$ and $O_{2}$ on heating is :

(i) $A g N O_{3}$ , (ii) $K N O_{3}$ ,

(iii) $C u (N O_{3})_{3}$ , (iv) $Z n (N O_{3})_{2}$ .

(b) The chemical used in the brown ring test is :

(i) $C u S O_{4}$ , (ii) $F e S O_{4}$

(iii) $F e_{2} (S O_{4})_{3}$ (iv) $Z n S O_{4}$ .

(i) NO, (ii) $N_{2} O,$

(iii) $N O_{2}$ (iv) $N_{2} O_{5}$ .

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