MCQ
Aqueous solution of $HCl$ has the $pH = 4$. Its molarity would be
- A$4 \,M$
- B$0.4 \,M$
- ✓$0.0001\, M$
- D$10 \,M$
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${H_2}C = C{H_2}(g) + {H_2}(g) \to {H_3}C - C{H_3}(g)$ at $298 \,K$ will be ....$kJ$
$(A)$ $M$ and $N$ are non-mirror image stereoisomers
$(B)$ $M$ and $O$ are identical
$(C)$ $M$ and $P$ are enantiomers
$(D)$ $M$ and $Q$ are identical
| column $I$ Metals | column $II$ Coordination compounds |
| $a.$ $Co$ | $i.$ Wilkinson catalyst |
| $b.$ $Zn$ | $ii.$ Chlorophyll |
| $c.$ $Rh$ | $iii.$ Vitamin $B_{12}$ |
| $d.$ $Mg$ | $iv.$ Carbonic anhydrase |