NCERT Solutions for Chapter: Organic Chemistry – Some Basic Principles and Techniques, Exercise 1: Short Answer Type

Give three points of differences between inductive effect and resonance effect.

Which of the following compound will not exist as resonance hybrid. Give reason for your answer:

${\mathrm{CH}}_3\mathrm{OH}$

Which of the following compounds will not exist as resonance hybrid. Give reason for your answer:

(i) ${\mathrm{CH}}_3\mathrm{OH}$        (ii) $\mathrm{R}-{\mathrm{CONH}}_2$    (iii) ${\mathrm{CH}}_3\mathrm{CH}={\mathrm{CHCH}}_2{\mathrm{NH}}_2$

Which of the following compound will not exist as resonance hybrid. Give reason for your answer:

${\mathrm{CH}}_3\mathrm{CH}={\mathrm{CHCH}}_2{\mathrm{NH}}_2$

Why does ${\mathrm{SO}}_3$ act as an electrophile?

Resonance structures of propenal are given below. Which of these resonating structure is more stable? Give reason for your answer.

$$\begin{gathered} {\mathrm{CH}}_2 —\mathrm{CH} = \mathrm{CH}—\mathrm{O} \leftrightarrow \stackrel{\oplus }{\mathrm{C}}{\mathrm{H}}_2-\mathrm{CH}=\mathrm{CH}-\stackrel{⊝}{\mathrm{O}} \\ \mathrm{I} \mathrm{II} \end{gathered}$$

By mistake, an alcohol (boiling point $97°\mathrm{C}$) was mixed with a hydrocarbon (boiling point $68°\mathrm{C}$). Suggest a suitable method to separate the two compounds. Explain the reason for your choice.

Which of the two structures $\left(\mathrm{A}\right)$ and $\left(\mathrm{B}\right)$ given below is more stabilised by resonance? Explain.

$\left(\mathrm{A}\right)$ ${\mathrm{CH}}_3\mathrm{COOH}$  and $\left(\mathrm{B}\right)$ ${\mathrm{CH}}_3\mathrm{CO}\stackrel{⊝}{\mathrm{O}}$