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Q. No.
Subtopic: Carboxylic Acids: Preparation & Properties |
88%
Level 1: 80%+
Hints
The IUPAC name for \(\mathrm{CH}_3 \mathrm{COCH}_2 \mathrm{COCH}_3\) is:
1. Pentane-2,4-dione
2. Pentane-1,4-dione
3. Pentane-2,2-dione
4. Pentane-3,4-dione
1. Pentane-2,4-dione
2. Pentane-1,4-dione
3. Pentane-2,2-dione
4. Pentane-3,4-dione
Subtopic: Aldehydes & Ketones: Preparation & Properties |
89%
Level 1: 80%+
Hints
The IUPAC name for PhCOPh is:
1. Diphenylmethanone
2. Benzophenone
3. Dibenzylmethanone
4. Dibenzylketone
1. Diphenylmethanone
2. Benzophenone
3. Dibenzylmethanone
4. Dibenzylketone
Subtopic: Aldehydes & Ketones: Preparation & Properties |
54%
Level 3: 35%-60%
Hints
The enolic form of acetone contains:
1. 9 sigma bonds, 1 pi-bond, and 2 lone pairs
2. 8 sigma bonds, 2 pi-bonds, and 2 lone pairs
3. 10 sigma bonds, 1 pi-bond, and 1 lone pair
4. 9 sigma bonds, 2 pi-bonds, and 1 lone pair
1. 9 sigma bonds, 1 pi-bond, and 2 lone pairs
2. 8 sigma bonds, 2 pi-bonds, and 2 lone pairs
3. 10 sigma bonds, 1 pi-bond, and 1 lone pair
4. 9 sigma bonds, 2 pi-bonds, and 1 lone pair
Subtopic: Aldehydes & Ketones: Preparation & Properties | Isomers & Reaction Mechanism |
78%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
The correct IUPAC name of the following compound is:
| 1. | 2-Ethylhex-3-en-4-one | 2. | 4-Methylhex-3-en-2-one |
| 3. | 4-Ethylpent-3-en-2-one | 4. | 3-Methylhex -3-en-4-one |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
87%
Level 1: 80%+
NEET - 2022
Hints
Match the common names given in Column I with the IUPAC names given in Column II.
| Column l (Common names) |
Column ll (IUPAC names) |
| A. Cinnamaldehyde | 1. Pentanal |
| B. Acetophenone | 2. Prop-2-enal |
| C. Valeraldehyde | 3. 1-Phenylethanone |
| D. Acrolein | 4. 3-Phenylprop-2-en-al |
Codes:
| A | B | C | D | |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 1 | 4 | 2 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 3 | 1 | 2 |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
74%
Level 2: 60%+
Hints
Incorrect match among the following is:
| 1. | PhCH2CH2COOH = 3-Phenylpropanoic acid |
| 2. | (CH3)2C=CHCOOH = 3-Methylbut-2-enoic acid |
| 3. |  = 2-Methylcyclopentan-1-oic acid |
| 4. |  = 2,4,6-Trinitrobenzoic acid |
Subtopic: Carboxylic Acids: Preparation & Properties |
52%
Level 3: 35%-60%
Hints
Match the items in column I with the items in column II.
| Column I | Column II | ||
| a. | 2-Hydroxycyclopentane carbaldehyde | i. |  |
| b. | Di-sec-butyl ketone | ii. |  |
| c. | α-Methoxypropionaldehyde | iii. |  |
| d. | 4-Fluoroacetophenone | iv. |  |
| 1. | a-iv; b-i; c-iii; d-ii | 2. | a-ii; b-iv; c-i; d-iii |
| 3. | a-iii; b-i; c-iv; d-ii | 4. | a-iv; b-iii; c-i; d-ii |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
91%
Level 1: 80%+
Hints
Select the correct option based on the statements below:
| Assertion (A): | The geometry of formaldehyde molecule is planar. |
| Reason (R): | Formaldehyde molecule contains sp2 hybridized carbon atom. |
| 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. | Both (A) and (R) are False. |
Subtopic: Carboxylic Acids: Preparation & Properties |
86%
Level 1: 80%+
Hints
Mark the name of the reaction associated with the following conversion
1. Stephen reaction
2. Gattermann-Koch reaction
3. Etard reaction
4. Rosenmund reaction
1. Stephen reaction
2. Gattermann-Koch reaction
3. Etard reaction
4. Rosenmund reaction
Subtopic: Name Reaction |
89%
Level 1: 80%+
NEET - 2023
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