Sahana Ansari and Neha Miglani Solutions for Chapter: Sample Question Paper 2, Exercise 3: SAMPLE QUESTION PAPER 2

 What is meant by resonance energy?

Classify the following reaction in one of the reaction types studied in this unit.

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Br}+{\mathrm{HS}}^{-}\stackrel{ }{\to }{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{SH}+{\mathrm{Br}}^{-}$

Classify the following reaction in one of the reaction types studied in this unit.

${\left({\mathrm{CH}}_3\right)}_2\mathrm{C}={\mathrm{CH}}_2+\mathrm{HCl}\stackrel{ }{\to }{\left({\mathrm{CH}}_3\right)}_2\mathrm{CCl}-{\mathrm{CH}}_3$

Classify the following reaction in one of the reaction types studied in this unit.

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Br}+{\mathrm{HO}}^{-}\stackrel{ }{\to }{\mathrm{CH}}_2={\mathrm{CH}}_2+{\mathrm{Br}}^{-}+{\mathrm{H}}_2\mathrm{O}$

What are electrophiles and nucleophiles? Explain with examples.

Arrange the following:

${\mathrm{C}}_6{\mathrm{H}}_5\stackrel{+}{\mathrm{C}}{\mathrm{HCH}}_3, {\mathrm{C}}_6{\mathrm{H}}_5\stackrel{+}{\mathrm{C}}\mathrm{HCH}={\mathrm{CH}}_2, {\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2{{\mathrm{CH}}_2}^{+}, {\mathrm{C}}_6{\mathrm{H}}_5\stackrel{+}{\mathrm{C}}{\left({\mathrm{CH}}_3\right)}_2$ in order of increasing stability.

Arrange the following:

${\mathrm{CH}}_3{{\mathrm{CH}}_2}^{+}, {\mathrm{C}}_6{\mathrm{H}}_5\stackrel{+}{\mathrm{C}}{\mathrm{H}}_2, {\left({\mathrm{CH}}_3\right)}_3\stackrel{+}{\mathrm{C}}, {\mathrm{CH}}_2={{\mathrm{CHCH}}_2}^{+}$ in order of decreasing stability.

Arrange the following:

$\mathrm{CH}\equiv {\mathrm{C}}^{-}, {\left({\mathrm{CH}}_3\right)}_2{\mathrm{CH}}^{-}, {\mathrm{CH}}_3{{\mathrm{CH}}_2}^{-}, {{\mathrm{CH}}_3}^{-}, {\mathrm{CH}}_2={\mathrm{CH}}^{-}, {\mathrm{C}}_6{\mathrm{H}}_5{{\mathrm{CH}}_2}^{-}$ in order of increasing stability.