The radical  is aromatic because it has

The order of stability of the following tautomeric compound is

Among the following compounds the one that is most reactive towards electrophilic

nitration is

The correct order of decreasing acid strength of trichloroacetic acid (1), trifluoroacetic

acid (2), acetic acid (3) and formic acid (4) is

Which nomenclature is not according to IUPAC system?

The correct IUPAC name of the compound

 is

The Lassaigne's extract is boiled with a concentration HNO₃ while testing for halogens. By doing so it

Given is cyclohexanol (I), acetic acid (II), 2,4,6-trinitrophenol (III), and phenol (IV).

The order of decreasing acidic character will be

The most acidic compound among the following is-

The correct order of increasing reactivity of C-X bond towards nucleophile in the following

compounds is

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

Which one is most reactive towards electrophilic reagent?

The IUPAC name of the compound having the formula CH$\equiv$C-CH=CH₂ is

The relative reactivates of acyl compounds towards nucleophilic substitution are in the order of

Which one of the following is most reactive towards electrophillic attack?

A strong base can abstract an $\mathrm{\alpha }$-hydrogen from

The stability of carbanions in the following

is in the order of

(a) (1)>(2)>(3)>(4)

(b) (2)>(3)>(4)>(1)

(c) (4)>(2)>(3)>(1)

(d) (1)>(3)>(2)>(4)

If there is no rotation of plane polarized light by a compound in a specific solvent, thought to be chiral,

it may mean that:

For the following :

(i) I^-

(ii) Cl^-

(iii) Br^-

the increasing order of nucleophilicity would be :

Which compound is most reactive towards electrophilic substitution reaction?

 The double bond in the above mentioned compound that accept proton $\left({\mathrm{H}}^{+}\right)$ fastest is-