MCQ
Highest $pH =14$ is given by
- A$0.1\,M\,{H_2}S{O_4}$
- B$0.1\,M\,NaOH$
- ✓$1\,N\,NaOH$
- D$1\,N\,HCl$
$[O{H^ - }] = 1;\,\,pOH = 0$; $pH + pOH = 14$
$pH = 14 - 0 = 14$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| List $I$ (Fuels) | List $II$ (Composition) |
| $A.$ Water gas | $i.$ A mixture of $CO$ and $N_2$ |
| $B.$ Producer gas | $ii.$ Methane |
| $C.$ Coal gas | $iii.$ A mixture of $CO$ and $H_2$ |
| $D.$ Natural gas | $iv.$ A mixture of $CO$, $H_2$, $CH_4$ and $CO_2$ |
$A\,-\,B\,-\,C\,-\,D$ Respectively


$CaCO _3( s ) \rightleftharpoons CaO ( s )+ CO _2( g )$
For this equilibrium, the correct statement(s) is (are)
$(A)$ $\Delta H$ is dependent on $T$
$(B)$ $K$ is independent of the initial amount of $CaCO _3$
$(C)$ $K$ is dependent on the pressure of $CO _2$ at a given $T$
$(D)$ $\Delta H$ is independent of the catalyst, if any