Aldehydes, Ketones and Carboxylic Acids

The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds: [figure]

1. III > II > I
2. II > I > III
3. I > III > II
4. I > II > III

Clemmensen reduction of a ketone is carried out in the presence of which of the following?

1. Glycol with KOH
2. Zn-Hg with HCl
3. LiAlH4
4. H2 and Pt as catalyst

Following compounds are given (i) CH3CH2OH (ii) CH3COCH3 (iii) CH3- CH3 |CHOH (iv) CH3OH Which of the above compound(s), on being warmed with iodine solution and NaOH, will give iodoform?

1. (i), (iii) and (iv)
2. Only (ii)
3. (i), (ii) and (iii)
4. (i) and (ii)

Which one of the following compounds will be most readily dehydrated?

1. [figure]
2. [figure]
3. [figure]
4. [figure]

In a set of reactions, ethylbenzene yielded a product D. [figure] D would be

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Which of the following reactions will not result in the formation of carbon-carbon bonds?

1. Reimer-Tiemann reaction
2. Cannizzaro reaction
3. Wurtz reaction
4. Friedel-Crafts acylation

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

1. CH3COOCH3
2. CH3CONH2
3. CH3COOCOCH3
4. CH3COCl

Propionic acid with Br2/P yields a dibromo product. Its structure would be

1. [figure]
2. CH2(Br)-CH2-COBr
3. [figure]
4. CH2(Br)-CH(Br)-COOH

A strong base can abstract an α-hydrogen from

1. ketone
2. alkane
3. alkene
4. amine

The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of

1. Acid anhydride > Amide > Ester > Acyl chloride
2. Acyl chloride > Ester > Acid anhydride > Amide
3. Acyl chloride > Acid anhydride > Ester > Amide
4. Ester > Acyl chloride > Amide > Acid anhydride.