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D and F Block Elements question

2017 · Shift 2 · Q12

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PYQ Library
JEE Advanced
Chemistry
D and F Block Elements
2017 · Shift 2 · Q12

D and F Block Elements question

2017 · Shift 2 · Q12

JEE AdvancedChemistryD and F Block ElementsMCQ+3 / −0.75

Which of the following combination will produce

{H_2}

gas ?

A
Fe metal and conc. $HN{O_3}$
B
$Cu$ metal and conc. $HN{O_3}$
C
$Zn$ metal and $NaOH(aq)$
D
Au metal and $NaCN\left( {aq} \right)$ in the presence of air

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