MCQ
Change of $H$ into $ H^+$ is :
- ✓Oxidation of hydrogen
- BAcid base reaction
- CReduction of hydrogen
- DDisplacement reaction
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$(I)\,\,q + \mathrm{w}$ $(II)\,\, q$
$(III)\,\, \mathrm{w}$ $(IV)\,\, H - TS$
$2Al{(s)}+6HCl{(aq)} \rightarrow 2Al^{^{3+}}{(aq)}+6Cl^-{(aq)} +3H_2{(g)}$
Statement $I:$ Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement $II:$ The green colour observed is due to the formation of copper(I) metaborate.
In the light of the above statements, choose the most appropriate answer from the options given below :
$A : 3\,, 2\,, -2\,, +\, \frac{1}{2}$
$B : 3\,, 0\,, 0\,, + \,\frac{1}{2}$
What is true for $A$ and $B$