Electron Displacement Effects or Polar Effects
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317286 Which among the following functional groups exhibits \(-\mathrm{R}\) effect?

1 \(-\mathrm{CO}-\)
2 \(-\mathrm{Br}\)
3 \(-\mathrm{OR}\)
4 \(-\mathrm{NHR}\)
MHTCET - 2021
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317287 \({\rm{C - C}}\) bond-lengths \(\mathrm{x}\) and \(\mathrm{y}\) in benzene are
supporting img

1 \({\rm{x > y}}\)
2 \({\rm{x < y}}\)
3 \({\rm{x = y}}\)
4 Data insufficient
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317288 Polarization of electrons is acrolein may be written as

1 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8-}{\mathrm{O}}\)
2 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\stackrel{8-}{\mathrm{C}} \mathrm{H}=\mathrm{O}\)
3 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\stackrel{8+}{\mathrm{C}} \mathrm{H}-\mathrm{CH}=\mathrm{O}\)
4 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8+}{\mathrm{O}}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317289 Which of the following substituents has \({\rm{ + M}}\) (Mesomeric) effect?

1 \(-\mathrm{CN}\)
2 \(-\mathrm{CHO}\)
3 \(-\mathrm{NH}_{2}\)
4 \(-\mathrm{NO}_{2}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317290 Consider the following compounds,
(I)
supporting img
(II)
supporting img
(III)
supporting img
(IV)
supporting img
The order of basic strength of their conjugate base is

1 II \(>\) I \(>\) IV \(>\) III
2 II \(>\) IV \(>\) I \(>\) III
3 III \(>\) IV \(>\) I \(>\) II
4 III \(>\) IV \(>\) II \(>\) I
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317286 Which among the following functional groups exhibits \(-\mathrm{R}\) effect?

1 \(-\mathrm{CO}-\)
2 \(-\mathrm{Br}\)
3 \(-\mathrm{OR}\)
4 \(-\mathrm{NHR}\)
MHTCET - 2021
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317287 \({\rm{C - C}}\) bond-lengths \(\mathrm{x}\) and \(\mathrm{y}\) in benzene are
supporting img

1 \({\rm{x > y}}\)
2 \({\rm{x < y}}\)
3 \({\rm{x = y}}\)
4 Data insufficient
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317288 Polarization of electrons is acrolein may be written as

1 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8-}{\mathrm{O}}\)
2 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\stackrel{8-}{\mathrm{C}} \mathrm{H}=\mathrm{O}\)
3 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\stackrel{8+}{\mathrm{C}} \mathrm{H}-\mathrm{CH}=\mathrm{O}\)
4 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8+}{\mathrm{O}}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317289 Which of the following substituents has \({\rm{ + M}}\) (Mesomeric) effect?

1 \(-\mathrm{CN}\)
2 \(-\mathrm{CHO}\)
3 \(-\mathrm{NH}_{2}\)
4 \(-\mathrm{NO}_{2}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317290 Consider the following compounds,
(I)
supporting img
(II)
supporting img
(III)
supporting img
(IV)
supporting img
The order of basic strength of their conjugate base is

1 II \(>\) I \(>\) IV \(>\) III
2 II \(>\) IV \(>\) I \(>\) III
3 III \(>\) IV \(>\) I \(>\) II
4 III \(>\) IV \(>\) II \(>\) I
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317286 Which among the following functional groups exhibits \(-\mathrm{R}\) effect?

1 \(-\mathrm{CO}-\)
2 \(-\mathrm{Br}\)
3 \(-\mathrm{OR}\)
4 \(-\mathrm{NHR}\)
MHTCET - 2021
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317287 \({\rm{C - C}}\) bond-lengths \(\mathrm{x}\) and \(\mathrm{y}\) in benzene are
supporting img

1 \({\rm{x > y}}\)
2 \({\rm{x < y}}\)
3 \({\rm{x = y}}\)
4 Data insufficient
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317288 Polarization of electrons is acrolein may be written as

1 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8-}{\mathrm{O}}\)
2 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\stackrel{8-}{\mathrm{C}} \mathrm{H}=\mathrm{O}\)
3 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\stackrel{8+}{\mathrm{C}} \mathrm{H}-\mathrm{CH}=\mathrm{O}\)
4 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8+}{\mathrm{O}}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317289 Which of the following substituents has \({\rm{ + M}}\) (Mesomeric) effect?

1 \(-\mathrm{CN}\)
2 \(-\mathrm{CHO}\)
3 \(-\mathrm{NH}_{2}\)
4 \(-\mathrm{NO}_{2}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317290 Consider the following compounds,
(I)
supporting img
(II)
supporting img
(III)
supporting img
(IV)
supporting img
The order of basic strength of their conjugate base is

1 II \(>\) I \(>\) IV \(>\) III
2 II \(>\) IV \(>\) I \(>\) III
3 III \(>\) IV \(>\) I \(>\) II
4 III \(>\) IV \(>\) II \(>\) I
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317286 Which among the following functional groups exhibits \(-\mathrm{R}\) effect?

1 \(-\mathrm{CO}-\)
2 \(-\mathrm{Br}\)
3 \(-\mathrm{OR}\)
4 \(-\mathrm{NHR}\)
MHTCET - 2021
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317287 \({\rm{C - C}}\) bond-lengths \(\mathrm{x}\) and \(\mathrm{y}\) in benzene are
supporting img

1 \({\rm{x > y}}\)
2 \({\rm{x < y}}\)
3 \({\rm{x = y}}\)
4 Data insufficient
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317288 Polarization of electrons is acrolein may be written as

1 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8-}{\mathrm{O}}\)
2 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\stackrel{8-}{\mathrm{C}} \mathrm{H}=\mathrm{O}\)
3 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\stackrel{8+}{\mathrm{C}} \mathrm{H}-\mathrm{CH}=\mathrm{O}\)
4 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8+}{\mathrm{O}}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317289 Which of the following substituents has \({\rm{ + M}}\) (Mesomeric) effect?

1 \(-\mathrm{CN}\)
2 \(-\mathrm{CHO}\)
3 \(-\mathrm{NH}_{2}\)
4 \(-\mathrm{NO}_{2}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317290 Consider the following compounds,
(I)
supporting img
(II)
supporting img
(III)
supporting img
(IV)
supporting img
The order of basic strength of their conjugate base is

1 II \(>\) I \(>\) IV \(>\) III
2 II \(>\) IV \(>\) I \(>\) III
3 III \(>\) IV \(>\) I \(>\) II
4 III \(>\) IV \(>\) II \(>\) I
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317286 Which among the following functional groups exhibits \(-\mathrm{R}\) effect?

1 \(-\mathrm{CO}-\)
2 \(-\mathrm{Br}\)
3 \(-\mathrm{OR}\)
4 \(-\mathrm{NHR}\)
MHTCET - 2021
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317287 \({\rm{C - C}}\) bond-lengths \(\mathrm{x}\) and \(\mathrm{y}\) in benzene are
supporting img

1 \({\rm{x > y}}\)
2 \({\rm{x < y}}\)
3 \({\rm{x = y}}\)
4 Data insufficient
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317288 Polarization of electrons is acrolein may be written as

1 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8-}{\mathrm{O}}\)
2 \(\stackrel{8+}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\stackrel{8-}{\mathrm{C}} \mathrm{H}=\mathrm{O}\)
3 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\stackrel{8+}{\mathrm{C}} \mathrm{H}-\mathrm{CH}=\mathrm{O}\)
4 \(\stackrel{8-}{\mathrm{C}} \mathrm{H}_{2}=\mathrm{CH}-\mathrm{CH}=\stackrel{8+}{\mathrm{O}}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317289 Which of the following substituents has \({\rm{ + M}}\) (Mesomeric) effect?

1 \(-\mathrm{CN}\)
2 \(-\mathrm{CHO}\)
3 \(-\mathrm{NH}_{2}\)
4 \(-\mathrm{NO}_{2}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317290 Consider the following compounds,
(I)
supporting img
(II)
supporting img
(III)
supporting img
(IV)
supporting img
The order of basic strength of their conjugate base is

1 II \(>\) I \(>\) IV \(>\) III
2 II \(>\) IV \(>\) I \(>\) III
3 III \(>\) IV \(>\) I \(>\) II
4 III \(>\) IV \(>\) II \(>\) I