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Q. No.The correct IUPAC name of the given compound is-
1. 5-Oxohexanoic
2. 2-Oxohexan-5-oic
3. 5-Carboxylpentan-2-one
4. Hexan-2-on-6-oic
Subtopic: Aldehydes & Ketones: Preparation & Properties |
87%
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Match the items in column I with items in column II.
| Column I Reactions |
Column II Reagents |
| i. Hexan-1-ol to hexanal | a. (Diisobutyl)aluminiumhydride (DIBAL-H) |
| ii. Ethanenitrile to ethanal | b. Chromyl chloride in the presence of CS2 |
| iii. p-Fluorotoluene to p-fluorobenzaldehyde | c. PCC (Pyridinium chlorochromate) |
1. i=c; ii=a; iii=b
2. i=b; ii=c; iii=a
3. i=c; ii=b; iii=a
4. i=a; ii=b; iii=c
Subtopic: Aldehydes & Ketones: Preparation & Properties |
82%
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Consider the following reaction.
Benzyl alcohol + HBr → X \(\xrightarrow[]{KCN}\) Y \(\xrightarrow[]{H^{+}, \ H_{2}O}\) Z
The product Z is as follows:
1. 2-Phenylethanoic acid
2. 2-Phenylcarboxylic acid
3. 1-Phenylethanoic acid
4. None of the above
Benzyl alcohol + HBr → X \(\xrightarrow[]{KCN}\) Y \(\xrightarrow[]{H^{+}, \ H_{2}O}\) Z
The product Z is as follows:
1. 2-Phenylethanoic acid
2. 2-Phenylcarboxylic acid
3. 1-Phenylethanoic acid
4. None of the above
Subtopic: Carboxylic Acids: Preparation & Properties |
58%
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The conversion of 4-Methylacetophenone to benzene-1,4-dicarboxylic acid can be achieved by-
1. i. HCN; ii. H+/H2O
2. ii. LiAlH4; ii. H+/H2O
3. i. KMnO4/KOH; ii. dil. H2SO4
4. i. CH3MgBr; ii. H+/H2O
1. i. HCN; ii. H+/H2O
2. ii. LiAlH4; ii. H+/H2O
3. i. KMnO4/KOH; ii. dil. H2SO4
4. i. CH3MgBr; ii. H+/H2O
Subtopic: Carboxylic Acids: Preparation & Properties |
77%
From NCERT
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Subtopic: Carboxylic Acids: Preparation & Properties |
63%
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Butanal → Butanoic acid
The best reagent for a above transformation is-
1. Tollen's reagent
2. KMnO4
3. K2Cr2O7
4. All of the above
The best reagent for a above transformation is-
1. Tollen's reagent
2. KMnO4
3. K2Cr2O7
4. All of the above
Subtopic: Carboxylic Acids: Preparation & Properties |
79%
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Given below are two statements:
| Assertion (A): | But-2-ene to ethanal can be obtained by reductive ozonolysis. |
| Reason (R): | Allyl alcohol to propenal is a reduction reaction and can be achieved by using PCC reagent. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 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. |
Subtopic: Aldehydes & Ketones: Preparation & Properties |
From NCERT
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Select Chapter Topics:
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Q. No.
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