Q. In the mechanism for the reaction of HBr with t-butyl alcohol, pick out the correct statement.

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A

Formation of protonated alcohol in a slow step

B

Formation of is a slow step

C

Formation of from is a slow step

D

Formation of is a fast step

Solution:

The mechanism of this reaction is as follows
(fast)

Hence, formation on carbocation is slow step (R.D.S.).

Questions from NTA Abhyas 2022

1. An alkene on ozonolysis gives a mixture of two carbonyl compounds. Mixture on Clemmensen reduction gives just one alkane . is the lowest alkane which in pure form can not be prepared by standard Wurtz method. is

2. A cation is in the centre touches three anions. Assume that the anions also touch each other. The limiting radius ratio, is

3. Blue colour of alkali and alkaline earth metals in liquid is due to

4. Which of the following oxides is strongly basic?

5. In a box hydroiodic acid is taken. After equilibrium the concentration of is found to be . The concentration of at equilibrium in , is

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