MCQ
Sucrose is
- ALaevorotatory
- ✓Dextrorotatory
- CRacemic mixture
- DOptically inactive

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$ {\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)\right]^{+}+\mathrm{NH}_3 \rightleftharpoons\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+} ; \mathrm{k}_2=1.7 \times 10^{-3}}$
then the formation constant of $\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}$is
Statement $I : CeO _{2}$ can be used for oxidation of aldehydes and ketones.
Statement $II :$ Aqueous solution of $EuSO _{4}$ is a strong reducing agent.
In the light of the above statements, choose the correct answer from the options given below
| gas | $Ar$ | $Ne$ | $Kr$ | $Xe$ |
| $a /\left( atm \,dm ^{6} \,mol ^{-2}\right)$ | $1.3$ | $0.2$ | $5.1$ | $4.1$ |
| $b /\left(10^{-2} \,dm ^{3}\, mol ^{-1}\right)$ | $3.2$ | $1.7$ | $1.0$ | $5.0$ |
Which gas is expected to have the highest critical temperature?
The compound $[P]$ is :
