The reaction of methyltrichloroacetate (Cl₃CCO₂Me) with sodium methoxide (NaOMe) generates

• carbocation

• carbene

• carbanion

• carbon radical

42.

Identify the correct method for the synthesis of the compound shown below from the following alternatives.

• 

• 

• 

• 

What is the end product for the reaction?

Number of chiral centers in the following image is/ are

• 1

• 2

• 3

• 4

In the following reaction

The main product (P) is

On Friedal Crafts acetylation, anisol yields

• 2-methoxyacetophenone

• 4-methoxyacetophenone

• Both (a) and (b)

• None of the above

Compound (A) when heated with ethyl magnesium iodide in dry ether forms an addition product, which on hydrolysis forms compound (B) Compound (B) on oxidation form 3-pantanone. Hence (A) and (B) are respectively 

• propanal, 3-pentanol

• pentanol, 3-pentanol

• ethanal, pentanol

• acetone, 3-pentanol

The false statements among the following are

I. A primary carbocation is less stable than a tertiary carbocation.

II. A secondary propyl carbocation is less stable than allyl carbocation.

III. A tertiary free radical is more stable than a primary free radical.

IV. Isopropyl carbanion is more stable than ethyl carbanion.

• I and II

• II and III

• I and IV

• II and IV

C₆H₅-NO₂ $\underset{\mathrm{NHCl}}{\overset{\mathrm{Zn}-\mathrm{dust}}{\to }}$ A $\underset{\mathrm{conc}. \mathrm{HCl}}{\overset{\mathrm{cold}}{\to }}$ B 

A and B respectively are

• 

• 

• 

• None of the above

X and Y in the above given reaction are

• picric acid, 2,4, 6-tribromophenol

• 5-nitrophenol acid, 5-bromosalicylic acid

• o-nitrophenol, o-bromophenol

• 3, 5-dinitrosalicylic acid, 3,5-dibromosalicylic acid