Acetone reacts with iodine $\left({\mathrm{I}}_2\right)$ to form iodoform in the presence of

(a) Ca${\mathrm{CO}}_3$          (b) NaOH          (c) KH           (d) Mg${\mathrm{CO}}_3$

Which of the following compounds with molecular formula, C₅H₁₀ yields acetone on ozonolysis? 

(a) 2-methyl-2-butene

(b) 3-methyl-1-butene

(c) Cyclopentane

(d) 2-methyl-1-butene

Among acetic acid, phenol and n-hexanol which one of the following compound will react with NaHCO₃ solution to give sodium salt and CO₂?                                             

1. Acetic acid

2. n-hexanol

3. Acetic acid and phenol

4. Phenol

The reagent used for the separation of acetaldehyde from acetophenone is

1.  NaHSO₃         

2.  C₆H₅NHNH₂           

3.  NH₂OH             

4.  NaOH and I₂

Iodoform test is not given by

(a) 2-pentanone                 

(b) ethanol

(c) ethanal                         

(d) 3-pentanone

Two isomeric ketones 3-Pentanones and 2-pentanone can be distinguished by

1. I₂/NaOH only               

2. NaHSO₃ only

3. NaCN/HCl                     

4. both of (a) and (b)   

Products of the following reaction                                   

  CH₃C$\equiv$C.CH₂CH₃ $\underset{\left(\mathrm{ii}\right) \mathrm{hydrolysis}}{\overset{\left(\mathrm{i}\right) {\mathrm{O}}_3}{\to }}$ ... are

(a) CH₃CHO + CH₃CH₂CHO

(b) CH₃COOH + CH₃COCH₃

(c) CH₃COOH + HOOC.CH₂CH₃

(d) CH₃COOH + CO₂

Which alkene on ozonolysis gives CH₃CH₂CHO and CH₃COCH₃?                                          

(a) CH₃CH₂CH=C${<}_{{\mathrm{CH}}_3}^{{\mathrm{CH}}_3}$

(b) CH₃CH₂CH=CHCH₂CH₃

(c) CH₃CH₂CH=CHCH₃

(d) $$\begin{gathered} {\mathrm{CH}}_3-\underset{|}{\mathrm{C}}={\mathrm{CHCH}}_3 \\ {\mathrm{CH}}_3 \end{gathered}$$

The major organic product formed from the following reaction

 $\underset{\left(\mathrm{ii}\right) {\mathrm{LiAlH}}_4 \left(\mathrm{iii}\right) {\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{i}\right) {\mathrm{CH}}_3{\mathrm{NH}}_2}{\to }}$ ... is

1.                   

2.  

3.                 

4.  

Benzoic acid gives benzene on being heated with X and phenol gives benzene on being heated with Y. Therefore, X and Y are respectively                                                              

(a) sodalime and copper

(b) Zn dust and NaOH

(c) Cu and sodalime

(d) sodalime and zinc dust