AIEEE 2011 | Aldehydes, Ketones and Carboxylic Acids Question 232 | Chemistry

Trichloroacetaldehyde was subjected to Cannizzaro’s reaction by using NaOH. The mixture of the products contains sodium trichloroacetate and another compound. The other compound is :

Trichloromethanol

2, 2, 2-Trichloropropanol

Chloroform

2, 2, 2-Trichloroethanol

AIEEE 2010

MCQ (Single Correct Answer)

-1

One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 u. The alkene is

propene

1–butene

2–butene

ethene

AIEEE 2009

MCQ (Single Correct Answer)

-1

A liquid was mixed with ethanol and a drop of concentrated H₂SO₄ was added. A compound with a fruity smell was formed. The liquid was :

CH₃OH

HCHO

CH₃CO CH₃

CH₃COOH

AIEEE 2009

MCQ (Single Correct Answer)

-1

In Cannizzaro reaction given below
2PhCHO $$\buildrel {\mathop {:OH}\limits^{\left( - \right)} } \over \longrightarrow $$ PhCH₂OH + $$PhC\mathop O\limits^{..} $$₂^(-)
the slowest step is :

the transfer of hydride to the carbonyl group

the abstraction of proton from the carboxylic group

the attack of $$:\mathop {OH}\limits^{( - )} $$ at the carboxyl group

the deprotonation of Ph CH₂OH

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