MCQ
In electroplating, the metal that is not used for plating is
  • $Fe$
  • B
    $Zn$
  • C
    $Ni$
  • D
    $Au$

Answer

Correct option: A.
$Fe$
a
It’s Obvious.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

$HBr$ reacts fastest with
At constant volume $5\,mol$ gas show increase in temperature by $3.5\,K$ on providing $437.5\,J$ heat then what will be the heat capacity for gas at constant pressure......$J\,K^{-1}\,mol^{-1}$
(image) $\xrightarrow{{\begin{array}{*{20}{c}}
  {AlC{l_3} + C{H_3} - C - Cl} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,} 
\end{array}}}$ major product
$80$ mole percent of $MgCl _2$ is dissociated in aqueous solution. The vapour pressure of $1.0$ molal aqueous solution of $MgCl _2$ at $38^{\circ} C$ is $.........\,mm\,Hg$. (Nearest integer)Given : Vapour pressure of water at $38^{\circ} C$ is $50\,mm\,Hg$
The work done in ergs for the reversible expansion of one mole of an ideal gas from a volume of $10 $litres to $20$  litres at ${25\,^o}C$ is
The best method to prepare cyclohexene from cyclohexanol is by using
A compound $X$ contains $32 \%$ of $A, 20 \%$ of $B$ and remaining percentage of $C$. Then, the empirical formula of $X$ is :

(Given atomic masses of $A=64 ; B=40 ; C=32 u$ )

What is the melting point of benzene if $\Delta {H_{fusion}}\, = \,9.95\,kJ/mol$ and $\Delta {S_{fusion}}\, = \,35.7\,J/K-mol$ ?
For the given reaction, which is not used to change the colour ?

${K_2}Cr_2{O_7}/{H^ + } + y \to \mathop {C{r^{ + 3}} + Others}\limits_{(green)\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} $

Equivalent mass of oxidizing agent in the reaction is $SO_2 + 2H_2S \to 3S + 2H_2O$ is