b-hydroxy butyraldehyde is an example of: 

(1) aldol

(2) diol

(3) hemiacetal

(4) acetal

A ketone reacted with C₂H₅MgBr reagent followed by hydrolysis gave a product which on dehydration gives an alken. The alkene on ozonolysis gave diethyl ketone and acetaldehyde. The ketone is:

(1) dimethyl ketone

(2) ethyl methyl ketone

(3) diethyl ketone

(4) ethyl propyl ketone

The reaction  produces:

1. 

2. 

3. 

4. 

Treatement of propionaldehyde with dil. NaOH gives:

(1) ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{COOCH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$

(2) ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CHOHCH}}_2{\mathrm{CH}}_2\mathrm{CHO}$

(3) ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CHOHCH}\left({\mathrm{CH}}_3\right)\mathrm{CHO}$

(4) ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{COCH}}_2{\mathrm{CH}}_2\mathrm{CHO}$

Which of the following will react with water ?

(1) CHCl₃

(2) CCl₃CHO

(3) CCl₄

(4) CH₂Cl.CH₂Cl

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

(1) MeCOCl

(2) MeCHO

(3) MeCOOMe

(4) MeCOOCOMe

In a Cannizzaro's reaction, the intermediate that will be best hydride donor is:

1. 

2. 

3. 

4. 

In the Cannizzaro's reaction given below,

$2\mathrm{Ph}-\mathrm{CHO}\stackrel{{\mathrm{OH}}^{-}}{\to }\mathrm{Ph}-{\mathrm{CH}}_2\mathrm{OH} + {\mathrm{PhCOO}}^{-}$

the slowest step is:

1. The attack of OH^- at the carbonyl group

2. The transfer of hydride to the carbonyl group

3. The abstraction of proton from the carboxylic acid

4. the deprotonation of Ph-CH₂OH

The aldol condensation of acetaldehyde results in hte formation of:

1. $$\begin{gathered} {\mathrm{CH}}_3 \mathrm{C} {\mathrm{CHCH}}_3 \\ \left|\right| | \\ \mathrm{O} \mathrm{OH} \end{gathered}$$

2. $$\begin{gathered} {\mathrm{CH}}_3 {\mathrm{CHCH}}_2 \mathrm{CH} \\ | || \\ \mathrm{OH} \mathrm{O} \end{gathered}$$

3. $$\begin{gathered} {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}—\mathrm{CH} \\ | || \\ \mathrm{OH} \mathrm{O} \end{gathered}$$

4. ${\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}+\mathrm{COOH}$

Wolff-Kishner's reaction is:

1. reduction of carbonyl compound into hydrocarbons

2. reduction of carbonyl compound into alcohols

3. reduction of nitrobenzene into aniline

4. reduction of carbohydrates to alcohol