0.3780 grams of an organic chloro compound gave 0.5740 grams of silver chloride in Carius estimation. % of chlorine present in the compound is -

In the Carius method, 0.468 grams of an organic sulphur compound gives 0.668 grams of barium sulphate.  The percentage of sulphur in the given compound is -

The most stable carbocation among the following is-
1. $({CH_3})_3C\overset{+}{C}H_2$
2. $({CH_3})_3\overset{+}{C}$
3. ${CH_3}CH_2\overset{+}{C}H_2$
4. $({CH_3})\overset{+}{C}HCH_2CH_3$

${\mathrm{O}}_2{\mathrm{NCH}}_2{\mathrm{CH}}_2{\mathrm{O}}^{-}$ is more stable than ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{O}}^{-}$ because :

Alkyl groups act as electron donors when attached to a π system due to:

An electrophile among the following is :

Which of the following reactions is an elimination reaction?

Geometrical isomerism can be shown by:

1.
2.
3.
4.

Free radical formation will take place in :

1.
2.
3.
4.