$$
The ease of dehydrohalogen of alkyl halide with alcoholic KOH is
1. 3º > 2º > 1º
2. 3º < 2º < 1º
3. 3º > 2º < 1º
4. 3º < 2º > 1º

(CH₃)₃CCI + (CH₃)₃C${\mathrm{O}}^{-}$ K⁺ → Product

1. S_N Product will be more

2. E₂ Product will be more

3. Both will be the same

4. None of the above

Consider the following reaction:-

Which response contains all the correct statement about this process?
(1)Dehydration
(2)E₂ mechanism
(3)Carbon skeleton migration
(4)Most stable alkene will form
(5)Single-step reaction

(a)1,3        (b)1,2,3         (c)1,2,5          (d)1,3,4

$\underset{\mathrm{heat}}{\overset{{\mathrm{H}}_3{\mathrm{PO}}_4}{\to }}<mspace\; width="1em"></mspace>\mathrm{OH}<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>+$

In E₂ elimination, some compounds follow Hofmann's rule which means:

1. the double bond goes to the most substituted carbon

2. the compound is resistant to elimination

3. no double bond is formed

4. the double bond goes mainly towards the least substituted carbon

In which reaction product formation takes place by Saytzeff rule?

1. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-\stackrel{\stackrel{\mathrm{Br}}{|}}{\mathrm{C}}\mathrm{H}-{\mathrm{CH}}_3\stackrel{{\mathrm{CH}}_3\mathrm{ONa}/∆}{\to }$

2. ${\mathrm{CH}}_3-\underset{\underset{{\mathrm{CH}}_3}{|}}{\overset{\stackrel{\mathrm{OH}}{|}}{\mathrm{C}}}-{\mathrm{CH}}_3\stackrel{\mathrm{conc}.<mspace\; width="1em"></mspace>{\mathrm{H}}_2{\mathrm{SO}}_4/∆}{\to }$

3. ${\mathrm{CH}}_3-\underset{\underset{{\mathrm{CH}}_3}{|}}{\overset{\stackrel{\mathrm{Br}}{|}}{\mathrm{C}}}-{\mathrm{CH}}_3\stackrel{\mathrm{alc}.<mspace\; width="1em"></mspace>\mathrm{KOH}/∆}{\to }$

4. ${\mathrm{CF}}_3-{\mathrm{CHCl}}_2\stackrel{\mathrm{alc}.<mspace\; width="1em"></mspace>\mathrm{KOH}/∆}{\to }$