Which of the following has most acidic proton?

1. CH₃COCH₃                             

2. (CH₃)₂C=CH₂

3. CH₃COCH₂COCH₃                   

4. (CH₃.CO)₃CH

Which one of the following can be oxidised to the corresponding carbonyl compound?   [2004]

1. 2-hydroxy propane

2. Ortho-nitro phenol

3. propane

4. 2-methyl-2-hydroxy propane

Dry distillation of barium salt of Hexane-1,6-dicarboxylic acid gives:

1. 

2. 

3. 

4. 

Polarisation of electrons in acrolein may be written as             

1. $\stackrel{\mathrm{\delta }+}{\mathrm{C}}{\mathrm{H}}_2=\mathrm{CH}-\mathrm{CH}=\stackrel{\mathrm{\delta }-}{\mathrm{O}}$

2. $\stackrel{\mathrm{\delta }+}{\mathrm{C}}{\mathrm{H}}_2=\stackrel{\mathrm{\delta }+}{\mathrm{C}}\mathrm{H}-\mathrm{CH}=\stackrel{}{\mathrm{O}}$

3. $\stackrel{\mathrm{\delta }+}{\mathrm{C}}{\mathrm{H}}_2=\stackrel{}{\mathrm{C}}\mathrm{H}-\mathrm{CH}=\stackrel{\delta +}{\mathrm{O}}$

4. $\stackrel{\mathrm{\delta }+}{\mathrm{C}}{\mathrm{H}}_2=\mathrm{CH}-\stackrel{\mathrm{\delta }+}{\mathrm{C}}\mathrm{H}=\mathrm{O}$

Consider the following reaction;

CH₃Br + Mg $\stackrel{\mathrm{Ether}}{\to }$A$\stackrel{\mathrm{HCHO}}{\to }$B$\stackrel{\mathrm{HOH}}{\to }$C

compound C is:

1. acetic acid

2. acetaldehyde

3. ethyl alcohol

4. formic acid

The conversion of CH₃OH to CH₃COOH can be brought in by:

1. K₂Cr₂O₇/H⁺                           

2. CO + Rh

3. KMnO₄                                   

4. H₃PO₄

Benzaldehyde and acetaldehyde can be distinguished by:

1. Iodoform test

2. 2,4 - DNP test

3. ${\mathrm{NH}}_3$ reaction

4. Wolff-Kishner's reduction

Fehling's solution is:

1. Acidified copper sulphate solution

2. Ammoniacal cuprous chloride solution

3. Copper sulphate, Rochelle salt + NaOH

4. None of the above

Which compounds will not reduce Fehling's solution?

1. Methanal                                 

2. Ethanal

3. Trichloroethanal                       

4. Benzaldehyde

Acetaldehyde normally reacts with                

1. only electrophiles

2. only nucleophiles

3. only free radicals

4. both electrophiles and nucleophiles