MCQ
The compound ‘$A$’ having formula ${C_8}{H_{10}}$ (aromatic) which gives $1$ mononitro substitute and $3$ nitrosubstitute compound is
- A$m-$Xylene
- ✓$p-$Xylene
- C$o-$Xylene
- DEthyl benzene
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| List $I$ | List $II$ |
| $A.$ Invertase | $I.$ Starch into maltose |
| $B.$ Zymase | $II.$ Maltose into glucose |
| $C.$ Diastase | $III.$ Glucose into ethanol |
| $D.$ Maltase | $IV.$ Cane sugar into glucose |
Choose the most appropriate answer from the options given below
$\mathrm{A}+\mathrm{B} \rightleftharpoons 2 \mathrm{C}$
the value of equilibrium constant is $100$ at $298\, \mathrm{~K}$. If the initial concentration of all the three species is $1\, \mathrm{M}$ each, then the equilibrium concentration of $\mathrm{C}$ is $\mathrm{X} \times 10^{-1} \,\mathrm{M}$. The value of $\mathrm{x}$ is $.....$ (Nearest integer)
Statement $(I)$ : $A$ Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities.
Statement $(II)$ : Blood is naturally occurring buffer solution whose $\mathrm{pH}$ is maintained by $\mathrm{H}_2 \mathrm{CO}_3 / \mathrm{HCO}_3$ concentrations.
In the light of the above statements, choose the correct answer from the options given below.
$(I)$ Acetaldehyde
$(II)$ Acetone
$(III)$ Di-tert-butylketone
$(IV)$ Methyl-tert-butyl ketone