Which of the following statement is not true about homolytic cleavage?
In homolytic cleavage the movement of a single electron takes place instead of an electron pair.
The organic reaction which proceed through homolytic bond cleavage are called ionic reactions or polar reactions
Homolytic cleavage results in the formation of neutral species which contains an unpaired electrons
None of the above
Which of the following has the maximum acidic strength ?
p-nitrophenol
p-nitrobenzoic acid
o-nitrobenzoic acid
m-nitrobenzoic acid
C.
o-nitrobenzoic acid
o-nitrobenzoic acid is the strongest acid among these. NO2 group is a powerful electron withdrawing group and it has most effect when present at o-position. It is also known as o-effect. Due to its electron withdrawing nature electron density on H-atom in -COOH group becomes very less, hence it can be easily donated.
A light greenish coloured salt was soluble in water. On passing H2S into the solution a black precipitate was obtained which dissolved readily in HCl The metal ion present is:
Co2+
Fe2+
Ni2+
Mn2+
What is 'X' in the following sequence ?
ArN2Cl Z Y X
Benzoic acid
Sodium benzoate
Benzaldehyde
Benzene
A salt on reacting with dil. H2S04 gives a reddish brown gas. The salt is:
KNO2
ZnBr2
NaNO3
FeCl3
The IUPAC name of the following compound is
2-ethylpentanol-4
3-methylhexanol-3
4-methylhexanol-2
4-ethylpentanol-2
Amongst the following, the compound that can most readily get sulphonated is :
benzene
toluene
nitrobenzene
chlorobenzene
(R)-2-Iodobutane is treated with NaI in acetone and allowed to stand for a long time. The product eventually formed is
(R)-2-iodobutane
(S)-2-iodobutane
(±)-2-iodobutane
(±)-1, 2-diiodobutane