Multiple Choice Questions2-Phenylethylbromide when heated with NaOEt, elimination takes place. No deuterium exchange takes place when the reaction is carried out in C2H5OD solvent. The mechanism will be
E1 elimination
E2 elimination
E1 cB elimination
E2 or E1cB
For the following reactions,
i) CH3 CH2 CH2Br + KOH --> CH3CH=CH2 +KBr +H2O
ii) 
iii) 
(i) is elimination reaction, (ii) is substitution reaction, and (iii) is addition reaction.
(i) is elimination reaction, (ii) is addition reaction, (iii) is substitution reactions.
(i) is substitution, (ii) addition reaction (iii) is addition reactions
(i) is substitution, (ii) addition reaction (iii) is addition reactions
In which of the following compounds, the C-Cl bond ionisation shall give most stable carbonium ions?
C.
The stability of carbocation follow the order 3> 2> 1> methyl. More the number of alkyl group attached with the carbon atom carrying the positive charge greater would be the tendency to stabilise positive charge via inductive effect, and hence more stable. Due to the presence of benzene group, there is more resonance possibility than others hence it forms a more stable compound.
A single compound of the structure is
obtainable from ozonolysis of which of the following cyclic compound?
Which of the following is a correct electron displacement for a nucleophilic reaction to take place?
Given,
The enthalpy of hydrogenation of these compounds will be in the order as
I>II>III
I<II<III
II>III>I
II>III>I
Identity Z in the sequence of reactions.
CH3-(CH2)3-O-CH2CH3
(CH3)2CH2-O-CH2CH3
CH3(CH2)4-O-CH2CH3
CH3(CH2)4-O-CH2CH3
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