MCQ
Aqua regia is a mixture of
- ✓$3HCl + 1HN{O_3}$
- B${H_3}P{O_4} + {H_2}S{O_4}$
- C$3HN{O_3} + 1HCl$
- D$HCl + C{H_3}COOH$
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$1.\,Zn|Z{n^{2 + }}\,\left( {1\,M} \right)||C{u^{2 + }}\left( {1\,M} \right)|Cu$
$2.\,Zn|Z{n^{2 + }}\,\left( {0.1\,M} \right)||C{u^{2 + }}\left( {1\,M} \right)|Cu$
$3.\,Zn|Z{n^{2 + }}\,\left( {1\,M} \right)||C{u^{2 + }}\left( {0.1\,M} \right)|Cu$
are represented by $E_1,\,E_2,\,E_3$. Which of the following statement is true?