323205
Which reaction is used in Zeisel's method of detection and estimation of alkoxy group?
1 Alkyl halide + sodium alkoxide
2 Natural products + excess of HI
3 Ether
4 Alcohol + acid
Explanation:
In Zeisel's method the compound is heated with excess HI, forming an alcohol and iodomethane. The iodomethane is distilled off and added into an acidic solution of silver nitrate where it precipitates silver iodide which is then filtered, weighed and the number of iodine atoms as well as the number of methoxy groups can be calculated.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323206
When p-nitrobromobenzene reacts with sodium ethoxide, the product obtained is
1 p-nitroanisole
2 ethyl phenyl ether
3 p-nitrophenetole
4 no reaction occurs.
Explanation:
In general aryl halides are highly stable and do not take part in Williamson's synthesis, but presence of strong electron withdrawing group like makes the bond weaker and facilitates the substitution of by .
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323207
The ether that undergoes electrophilic substitution reactions is
1
2
3
4
Explanation:
Only alkyl aryl ethers, e.g., undergoes electrophilic substitution reactions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323208
Phenol reacts with to give
1 benzamide
2 benzoic acid
3 aniline
4 None of the above
Explanation:
Phenol reacts with ammonia in the presence of anhydrous to give aniline.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323209
Which among the following is obtained as major product in the reaction stated below?
323205
Which reaction is used in Zeisel's method of detection and estimation of alkoxy group?
1 Alkyl halide + sodium alkoxide
2 Natural products + excess of HI
3 Ether
4 Alcohol + acid
Explanation:
In Zeisel's method the compound is heated with excess HI, forming an alcohol and iodomethane. The iodomethane is distilled off and added into an acidic solution of silver nitrate where it precipitates silver iodide which is then filtered, weighed and the number of iodine atoms as well as the number of methoxy groups can be calculated.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323206
When p-nitrobromobenzene reacts with sodium ethoxide, the product obtained is
1 p-nitroanisole
2 ethyl phenyl ether
3 p-nitrophenetole
4 no reaction occurs.
Explanation:
In general aryl halides are highly stable and do not take part in Williamson's synthesis, but presence of strong electron withdrawing group like makes the bond weaker and facilitates the substitution of by .
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323207
The ether that undergoes electrophilic substitution reactions is
1
2
3
4
Explanation:
Only alkyl aryl ethers, e.g., undergoes electrophilic substitution reactions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323208
Phenol reacts with to give
1 benzamide
2 benzoic acid
3 aniline
4 None of the above
Explanation:
Phenol reacts with ammonia in the presence of anhydrous to give aniline.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323209
Which among the following is obtained as major product in the reaction stated below?
323205
Which reaction is used in Zeisel's method of detection and estimation of alkoxy group?
1 Alkyl halide + sodium alkoxide
2 Natural products + excess of HI
3 Ether
4 Alcohol + acid
Explanation:
In Zeisel's method the compound is heated with excess HI, forming an alcohol and iodomethane. The iodomethane is distilled off and added into an acidic solution of silver nitrate where it precipitates silver iodide which is then filtered, weighed and the number of iodine atoms as well as the number of methoxy groups can be calculated.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323206
When p-nitrobromobenzene reacts with sodium ethoxide, the product obtained is
1 p-nitroanisole
2 ethyl phenyl ether
3 p-nitrophenetole
4 no reaction occurs.
Explanation:
In general aryl halides are highly stable and do not take part in Williamson's synthesis, but presence of strong electron withdrawing group like makes the bond weaker and facilitates the substitution of by .
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323207
The ether that undergoes electrophilic substitution reactions is
1
2
3
4
Explanation:
Only alkyl aryl ethers, e.g., undergoes electrophilic substitution reactions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323208
Phenol reacts with to give
1 benzamide
2 benzoic acid
3 aniline
4 None of the above
Explanation:
Phenol reacts with ammonia in the presence of anhydrous to give aniline.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323209
Which among the following is obtained as major product in the reaction stated below?
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CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323205
Which reaction is used in Zeisel's method of detection and estimation of alkoxy group?
1 Alkyl halide + sodium alkoxide
2 Natural products + excess of HI
3 Ether
4 Alcohol + acid
Explanation:
In Zeisel's method the compound is heated with excess HI, forming an alcohol and iodomethane. The iodomethane is distilled off and added into an acidic solution of silver nitrate where it precipitates silver iodide which is then filtered, weighed and the number of iodine atoms as well as the number of methoxy groups can be calculated.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323206
When p-nitrobromobenzene reacts with sodium ethoxide, the product obtained is
1 p-nitroanisole
2 ethyl phenyl ether
3 p-nitrophenetole
4 no reaction occurs.
Explanation:
In general aryl halides are highly stable and do not take part in Williamson's synthesis, but presence of strong electron withdrawing group like makes the bond weaker and facilitates the substitution of by .
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323207
The ether that undergoes electrophilic substitution reactions is
1
2
3
4
Explanation:
Only alkyl aryl ethers, e.g., undergoes electrophilic substitution reactions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323208
Phenol reacts with to give
1 benzamide
2 benzoic acid
3 aniline
4 None of the above
Explanation:
Phenol reacts with ammonia in the presence of anhydrous to give aniline.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323209
Which among the following is obtained as major product in the reaction stated below?
323205
Which reaction is used in Zeisel's method of detection and estimation of alkoxy group?
1 Alkyl halide + sodium alkoxide
2 Natural products + excess of HI
3 Ether
4 Alcohol + acid
Explanation:
In Zeisel's method the compound is heated with excess HI, forming an alcohol and iodomethane. The iodomethane is distilled off and added into an acidic solution of silver nitrate where it precipitates silver iodide which is then filtered, weighed and the number of iodine atoms as well as the number of methoxy groups can be calculated.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323206
When p-nitrobromobenzene reacts with sodium ethoxide, the product obtained is
1 p-nitroanisole
2 ethyl phenyl ether
3 p-nitrophenetole
4 no reaction occurs.
Explanation:
In general aryl halides are highly stable and do not take part in Williamson's synthesis, but presence of strong electron withdrawing group like makes the bond weaker and facilitates the substitution of by .
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323207
The ether that undergoes electrophilic substitution reactions is
1
2
3
4
Explanation:
Only alkyl aryl ethers, e.g., undergoes electrophilic substitution reactions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323208
Phenol reacts with to give
1 benzamide
2 benzoic acid
3 aniline
4 None of the above
Explanation:
Phenol reacts with ammonia in the presence of anhydrous to give aniline.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323209
Which among the following is obtained as major product in the reaction stated below?