General Organic Chemistry - Organic Chemistry - Chemistry Previous Year Questions

The correct order of the stability of the following compounds based upon hyperconjugation is

$$\text { Consider the following three resonance structures }$$

The correct order of their stabilities is

The delocalisation of $\sigma$ electrons of C-H bond of an alkyl group with the $\pi$ electrons of benzene is observed in

$$\text { Hybridisations of carbon-2 in } P \text { and } Q \text { are respectively. }$$

For the following radicals, the correct order of their stability is

Among the compounds

(i) $\mathrm{H}-\mathrm{C} \equiv \mathrm{C}-\mathrm{COOH}$

(ii) $\mathrm{CH}_2=\mathrm{CH}-\mathrm{COOH}$

(iii) $\mathrm{CH}_3-\mathrm{CH}_2 \mathrm{COOH}$ and

(iv) $\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{OH}$

The correct order of acid strength is

From the following compounds, the ones which contain both $s p$ and $s p^2$ hybridised carbons are

$$\text { Which of the following lacks hyperconjugative stability? }$$