Which of the following compounds is not chiral?
1-chloro-2-methyl pentane
2-chloropentane
1-chloropentane
3-chloro-2-methyl pentane
The IUPAC name of the following compound is
3-ethyl-2-methylbutanal
2, 3-dimethylpentanal
2-ethyl-3-methylbutanal
2-ethyl-3-methylbutan-3-al
Which of the following is not a isomer of pentane?
n-pentane
2, 2-dimethyl 1-propane
2, 3-dimethyl 1-butane
2-methyl 1-butane
Which of the following group is sharp -ortho and -para directive?
-C6H5
-OH
CH3
-Cl
B.
-OH
All the groups are o- and p-directive. But in -OH group, lone pair of electron present at o- atom, increases electron density for electrophile at o- and p- positions. Thus, it is sharp o- and p- directive.