The major product of the following reaction is:

 +  Alc.KOH $\to$  ?   

1. Butene

2. But-2-ene

3. Butane 

4. But-1-yne

${}_{}$

In the above reaction, X is:

1. ${\mathrm{HNO}}_3$ 

2. ${\mathrm{O}}_2$

3. ${\mathrm{O}}_3$

4. ${\mathrm{KMnO}}_4$

Which of the following compounds with molecular formula, ${\mathrm{C}}_5{\mathrm{H}}_{10}$ yields acetone on ozonolysis?

1. 2-methyl-2-butene

2. 3-methyl-1-butene

3. Cyclopentane

4. 2-methyl-1-butene

Gammexane (a $\mathrm{\gamma }$-isomer) is:

1. BHC
2. Benzene hexachloride
3. Lindane
4. All of the above

Ozonolysis (${\mathrm{O}}_3$, ${\mathrm{H}}_2{\mathrm{O}}_2$) of, ${\mathrm{CH}}_3-\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}-\mathrm{C}\equiv \mathrm{C}-{\mathrm{CH}}_3$ gives :

1.  ${\mathrm{CH}}_3\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}\mathrm{COOH}$+ ${\mathrm{CH}}_3\mathrm{COOH}$

2. ${\mathrm{CH}}_3\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}\mathrm{CHO}$ + ${\mathrm{CH}}_3\mathrm{CHO}$

3. ${\mathrm{CH}}_3\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}\mathrm{CHO}$ + ${\mathrm{CH}}_3\mathrm{COOH}$

4. none of the above

In a reaction, 

${\mathrm{CH}}_2={\mathrm{CH}}_2$$\underset{\mathrm{acid}}{\overset{\mathrm{Hypochlorous}}{\to }}$M$\stackrel{\mathrm{R}}{\to }$$\underset{{\mathrm{CH}}_2\mathrm{OH}}{\underset{|}{{\mathrm{CH}}_2\mathrm{OH}}}$

M = molecules, R = reagent. M and R are

1. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Cl}$ and NaOH

2. ${\mathrm{CH}}_2\mathrm{Cl}.{\mathrm{CH}}_2\mathrm{OH}$ and aq. ${\mathrm{NaHCO}}_3$

3. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$ and HCl

4.  and heat

An alkene, obtained by the dehydration of an alcohol (A), on ozonolysis gives two molecules of acetaldehyde for every molecule of alkene. The alcohol (A) is:

1. ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}$ 

2. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

3. ${\mathrm{CH}}_3\mathrm{CH}={\mathrm{CHCH}}_2\mathrm{OH}$   

4.  

When 3,3-dimethyl-2-butanol is heated with conc.${\mathrm{H}}_2{\mathrm{SO}}_4$, the major product obtained is -

1. 2,3-Dimethyl-2-butene

2. 3,3-Dimethyl-2-butene

3. 2,3-Dimethyl-1-butene

4. Cis and trans-isomers of 2,3-Dimethyl-2-butene

During ozonolysis of ${\mathrm{CH}}_2={\mathrm{CH}}_2$ if hydrolysis is made in absence of Zn dust the products formed are:

1. HCHO                                  2. HCOOH 

3. ${\mathrm{CH}}_3\mathrm{OH}$                                4. ${\mathrm{CH}}_2{\mathrm{OHCH}}_2\mathrm{OH}$