NEET

(II) > (IV) > (I) > (III)
(I) >(II) >(III) > (IV)
(II) >(I) > (IV) > (III)
(I) >(III) > (II) > (IV)

Solution

Hyper conjugation involves overlap of the following orbitals

?-?
?- π
p- p
π-π

Solution

The number of stereoisomers obtained by bromination of trans-2-butene is

1
2
3
4

Solution

a
b
c
d

Solution

Due to similar charges on adjacent atoms, the structure(a) is east stable.

The correct order of increasing basicity of the given conjugate bases (R = CH₃) is

a
b
c
d

Solution

a
b
c
d

Solution

In option (b) the complex formed is with benzene where as in other cases it is formed with nitrobenzene with –NO2 group in different position (o^-, m^-, p^-). The complex formed with nitrobenzene in any position of–NO₂ group is less stable than the complex formed with benzene so the correct answer is (b). The most stable complex has lowest energy.

S, S
R, R
R, S
S, R

Solution

The absolute configuration is (R, R)(using priority rules to get the absolute configuration)So the correct answer is (b).

Which one of the following conformations of cyclohexane is chiral?

Boat
Twist boat
Rigid
Chair

Solution

Chiral conformation will not have plane of symmetry.Since twist boat does not have plane of symmetry it is chiral.

a
b
c
d

Solution

UnAttempted

0

Attempted

0

Correct

0

Wrong

0

Attempted

Correct

UnAttempted

Wrong