General Organic Chemistry - PYQ | Chemistry

The following effect is known as

The major product of the following reaction sequence is

Which of the following is not explained by hyperconjugation?

Which compound among the following is most reactive towards electrophilic reagents?

Identify the product of the following reaction.

Identify the ortho and para-directing groups towards aromatic electrophilic substitution reactions from the following list

$$\mathrm{\mathop { - OH}\limits_I \mathop { - CN}\limits_{II} \mathop { - C{O_2}H}\limits_{III} \mathop { - OC{H_3}}\limits_{IV} \mathop { - NHCOC{H_3}}\limits_V \mathop { - CHO}\limits_{VI}}$$

The compound or ion which is not aromatic in the following is

Arrange the following in decreasing order of their pK_b values

A. ,\(\mathrm{CH}_3 \mathrm{NH}_2\)

B. \((\mathrm{CH}_3)_3 \mathrm{~N}\)

C.

D.

From the following identify the groups that exhibit negative resonance $(-R)$ effect when attached to conjugated system

$$\begin{array}{ccccc} \text { Formyl } & \text { Amino } & \text { Alkoxy } & \text { Cyano } & \text { Nitro } \\ A & B & C & D & E \end{array}$$

The number of nucleophiles in the following list is

$$\mathrm{CH}_3 \mathrm{NH}_2, \mathrm{CH}_3 \mathrm{CHO}, \mathrm{C}_2 \mathrm{H}_4, \mathrm{CH}_3 \mathrm{SH}$$

Arrange the following in the correct order of their acidic strength.

Observe the following substances.

Ethanol, acetic acid, ethylamine, trimethylamine, salicylic acid. ethanal.

In the above list, the number of substances with H -bonding is

In compound $(X)$, hyperconjugation is present and in $(Y)$, resonance effect is present. What are $X$ and $Y$, respectively?

$$\text { Identify the most stable carbocation from the following }$$