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

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

The correct order of the relative stability of the following carbanions is

I. $\mathrm{HC} \equiv \mathrm{C}^{-}$

II. $\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}_2^{-}$

III. $\mathrm{H}_2 \mathrm{C}=\mathrm{CH}^{-}$

IV. $\left(\mathrm{C}_6 \mathrm{H}_5\right)_2 \mathrm{CH}^{-}$

$$\text { Identify the correct decreasing order of acidic strength. }$$

The order of circled $\mathrm{C}-\mathrm{H}$ bond dissociation energy in the following compound is