Which one of the following compounds gives acetone (CH₃)₂C=O as one of the products of

1.  

2.  

3. 

4.   

Trans-cyclohexane-1,2-diol can be obtained by the reaction of cyclohexane with:

(1) KMnO₄                                       

(2) OsO₄

(3) peroxy formic acid/H₃O⁺             

(4) SeO₂

$\underset{\left(2\right) {\mathrm{NaBH}}_4, {\mathrm{HO}}^{-}}{\overset{\left(1\right) ({\mathrm{CF}}_2{\mathrm{CO}}_2{)}_2\mathrm{Hg}, {\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}}{\to }} \underset{(100\%)}{\left(P\right)}$; Product (P) is :

1.  

2.   

3.  

4.   

What is the major product expected form the following reaction?

1.		2.
3.		4.

$\underset{2. {\mathrm{NaHSO}}_3}{\overset{1. {\mathrm{OsO}}_4}{\to }}$ Product of the reaction is :

1.    

2. 

3.      

4. 

Addition of OsO₄ to cyclopentene generates:
(1) Achiral product

(2) Racemic product

(3) Meso product

(4) Optically active product

The major product of the following reaction is:

${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2 + \mathrm{HBr} \stackrel{({\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CO}{)}_2{\mathrm{O}}_2}{\to }$

1.  ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Br}$

2.  ${\mathrm{CH}}_3\mathrm{CH}\left(\mathrm{Br}\right)-{\mathrm{CH}}_3$

3.  ${\mathrm{BrCH}}_2-\mathrm{CH}={\mathrm{CH}}_2$

4. 

Which series of reactions will achieve the following transformation?

1                          2   

(a) Cl₂/CCl₄         Br₂                           

(b)   HBr             Cl₂/CCl₄

(c) Cl₂/CCl₄         NBS/hv                     

(c)   NBS/hv        Cl₂/CCl₄

The principal organic product formed in the reaction given below is:-

CH₂=CH(CH₂)₈COOH+HBr→...
                                  peroxide

1. CH₃-CHBr(CH₂)₈COOH

2. CH₂=CH(CH₂)₈COBr

3. CH₂BrCH₂(CH₂)₈COOH

4. CH₂=CH(CH₂)₇CHBrCOOH

When 2-butyne is treated with H₂ Pd-BaSO₄, the product formed will be:

1. cis-2-Butene

2. trans-2-Butene

3. 1-Butene

4. 2-Hydroxy butane