MCQ
$D-$ glucose & $D-$ fructose can be differentiated by
- AFehling solution
- BTollens reagent
- CBenedict test
- ✓$Br_2 /H_2O$
$D-$ Fructose $\to$ No reaction.
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| List-I (Molecule) | List-II (Bond order) |
| (a) $Ne _2$ | (i) 1 |
| (b) $N _2$ | (ii) 2 |
| (c) $F _2$ | (iii) 0 |
| (d) $O _2$ | (iv) 3 |
$A$. All the transition metals except scandium form $MO$ oxides which are ionic.
$B$. The highest oxidation number corresponding to the group number in transition metal oxides is attained in $Sc _2 O _3$ to $Mn _2 O _7$.
$C$. Basic character increases from $V _2 O _3$ to $V _2 O _4$ to $V _2 O _5$.
$D$. $V _2 O _4$ dissolves in acids to give $VO _4^{3-}$ salts.
$E$. $CrO$ is basic but $Cr _2 O _3$ is amphoteric.
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