The correct IUPAC name of the compound given below is:

     

In the following groups,

$\begin{array}{cccc}-\mathrm{OAc},& -\mathrm{OMe},& -{\mathrm{OSO}}_2\mathrm{Me},& -{\mathrm{OSO}}_2{\mathrm{CF}}_3\\ \mathrm{I}& \mathrm{II}& \mathrm{III}& \mathrm{IV}\end{array}$

the order of leaving group ability is

Amongst the following, the most basic compound is

The maximum number of isomers (including stereoisomers) that are possible on monochlorination of the following compound is:

How many of the following compounds exhibit tautomerism ?

How many alcohols from the following set gives geometric isomers on dehydration?

1. propan$-2-$ol

2. $2-$methyl propan$-1-$ol

3. pentan$-2-$ol

4. ethanol

5. propan$-1-$ol

6. $2-$methyl propan$-2-$ol

7. butan$-1-$ol

8. butan$-2-$ol

9. hexan$-3-$ol