The reaction that does not give benzoic acid as the major product is:
1. | \(\xrightarrow{K_2Cr_2O_7}\) | 2. | \(\xrightarrow[(ii)H_3O^+]{(i)NaOCl}\) |
3. | \(\xrightarrow{PCC}\) | 4. | \(\xrightarrow{KMnO_4/H^+}\) |
An acid that forms an anhydride (X) on heating and an acid imide (Y) on strong heating with ammonia is:
1. | 2. | ||
3. | 4. |
A yellow precipitate with iodine and alkali is given by:
(i). Methyl acetate
(ii). Acetamide
(iii). 2-Hydroxypropane
(iv). Acetophenone
1. (i), and (ii)
2. (ii), and (iii)
3. (iii), and (iv)
4. (iv), and (i)
Consider the following reaction:
The product 'A' is:
1.
2.
3.
4.
Match the compounds given in List-I with List-II and select the suitable option from the code given below:
List-I | List-II |
(a) Benzaldehyde |
(i) Phenolphthalein |
(b) Phthalic anhydride |
(ii) Benzoin condensation |
(c) Phenyl benzoate |
(iii) Oil of wintergreen |
(d) Methyl salicylate |
(iv) Fries rearrangement |
Codes:
(a) | (b) | (c) | (d) | |
1. | (ii) | (i) | (iv) | (iii) |
2. | (iv) | (i) | (iii) | (ii) |
3. | (iv) | (ii) | (iii) | (i) |
4. | (ii) | (iii) | (iv) | (i) |
What is the name of the below mentioned reaction?
\(\small{\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}+\mathrm{CH}_3 \mathrm{COCl} \stackrel{\text { Pyridine }}{\longrightarrow} \mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5+\mathrm{HCl}}\)
1. Acetylation
2. Cannizzaro reaction
3. Cross aldol condensation
4. Decarboxylation
Select the correct option based on statements below:
Assertion (A): | Aldehydes and ketones both react with Tollen’s reagent to form a silver mirror. |
Reason (R): | Both aldehydes and ketones contain a carbonyl group. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | (A) is false but (R) is true. |
Select the correct option based on statements below:
Assertion (A): | Aromatic aldehydes and formaldehydes undergo the Cannizzaro reaction. |
Reason (R): | Aromatic aldehydes are almost as reactive as formaldehyde. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Select the correct option based on statements below:
Assertion (A): | The α -hydrogen atom in carbonyl compounds is less acidic. |
Reason (R): | The anion formed after the loss of the α -hydrogen atom is resonance stabilized. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
Select the correct option based on statements below:
Assertion (A): | Compounds containing —CHO group are easily oxidised to corresponding carboxylic acids. |
Reason (R): | Carboxylic acids can be reduced to alcohol by treatment with LiAlH4. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |