Consider the following reaction,
Methanal + Grignard Reagent →
The structure of Grignard reagent is-
1. CH3CH2MgBr
2. (CH3)2CHMgBr
3. (CH3)2CH2CH2MgBr
4. (CH3)3CMgBr
1. CH3CH2CH2OH
2. CH3CH(OH)CH3
3. CH3CH(OH)CH2OH
4. CH3CH2CH3
Butan-1-ol and 2-Methylbutan-2-ol can be differentiated by :
1. HCl-ZnCl2 at room temperature.
2. HBr
3. SOCl2
4. Both (2) and (3)
\(\text{1-Methylcyclohexanol}~ \mathrm{\xrightarrow[]{acid \ catalysed \ dehydration}} ~\text A\)
1. 2-Methylcyclohexene
2. 1-Methylcyclohexanol
3. 1-Methylcyclohexane
4. 1-Methylcyclohexene
Given below are two statements:
Assertion (A): | Ortho and para nitrophenols are more acidic than phenol. |
Reason (R): | Phenoxide ion formed by ortho and para nitrophenols are more stable than pehenoxide ion formed by phenol. |
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. |
Consider the two statements given below:
I. The given reaction is known as Kolbe’s reaction.
II. The given reaction is known as Reimer - Tiemann reaction.
1. Both statements I and II are true.
2. Statement I is true and statement II is false.
3. Both statements I and II are false.
4. Statement I is false, statement II is true.
In the given reaction,
product A and reaction name are respectively-
1. | 2-Ethoxy-3-methylpentane; Williamson synthesis reaction |
2. | 1-Ethoxy-3-methylpentane; Williamson synthesis reaction |
3. | 2-Ethoxy-3-methylpentane; Nucleophilic addition reaction |
4. | 1-Ethoxy-3-methylpentane; Nucleophilic addition reaction |
The appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene is-
1. | |
2. | |
3. | Both 1 and 2 are appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene |
4. | None of the above |
CH3−CH2−CH2−O−CH3 + HBr→ A + B
1. | ; CH3Br |
2. | CH3CH2CH2Br ; CH3OH |
3. | ; CH3OH |
4. | CH3CH2CH2Br; CH3Br |
Column I | Column II |
a. | i. Tertiary alcohol |
b. H2C=CH−CH2OH | ii. Primary alcohol |
c.
CH3−CH2−CH2−OH |
iii. Secondary alcohol |