FST 1
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TEST SERIES (CHEMISTRY FST)

263902 Which of the following res onance structure is the major contributor of the resonnance hybrid \(\mathrm{CH}_2-\mathrm{CH}_2 \stackrel{-}{\mathrm{CH}}-\mathrm{O}-\mathrm{CH}_2 \leftrightarrow \mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}=\mathrm{C} \mathrm{CH}_2 \)

1 I
2 II
3 Both have equal contribution
4 they are not resonance structure
NCERT-XI-275
TEST SERIES (CHEMISTRY FST)

263904 B is:

1
2
3
4 None of these
NCERT-XII-343
TEST SERIES (CHEMISTRY FST)

263905 In the reaction :

1 Ethylidene bromide
2 Bromoform
3 Ethylene dibromide
4 Ethanoyl bromide
NCERT-XI-282
TEST SERIES (CHEMISTRY FST)

263906 Given below are two statements: Statement I: Adehyde and ketones are generally prepared by oxidation of primary and secondary alcohol respectively. Statement II : Treating a nitrile with grignard reagent followed by hydrolysis yields an alcohol. In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct.
NCERT-XII-356
TEST SERIES (CHEMISTRY FST)

263907 Which of the following has the lowest nucleophilicity:

1 \(\mathrm{F}^{-}\)
2 \(\mathrm{OH}^{-}\)
3 \(\mathrm{CH}_3^{-}\)
4 \(\mathrm{NH}_2^{-}\)
NCERT-XII-273
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TEST SERIES (CHEMISTRY FST)

263902 Which of the following res onance structure is the major contributor of the resonnance hybrid \(\mathrm{CH}_2-\mathrm{CH}_2 \stackrel{-}{\mathrm{CH}}-\mathrm{O}-\mathrm{CH}_2 \leftrightarrow \mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}=\mathrm{C} \mathrm{CH}_2 \)

1 I
2 II
3 Both have equal contribution
4 they are not resonance structure
NCERT-XI-275
TEST SERIES (CHEMISTRY FST)

263904 B is:

1
2
3
4 None of these
NCERT-XII-343
TEST SERIES (CHEMISTRY FST)

263905 In the reaction :

1 Ethylidene bromide
2 Bromoform
3 Ethylene dibromide
4 Ethanoyl bromide
NCERT-XI-282
TEST SERIES (CHEMISTRY FST)

263906 Given below are two statements: Statement I: Adehyde and ketones are generally prepared by oxidation of primary and secondary alcohol respectively. Statement II : Treating a nitrile with grignard reagent followed by hydrolysis yields an alcohol. In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct.
NCERT-XII-356
TEST SERIES (CHEMISTRY FST)

263907 Which of the following has the lowest nucleophilicity:

1 \(\mathrm{F}^{-}\)
2 \(\mathrm{OH}^{-}\)
3 \(\mathrm{CH}_3^{-}\)
4 \(\mathrm{NH}_2^{-}\)
NCERT-XII-273
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TEST SERIES (CHEMISTRY FST)

263902 Which of the following res onance structure is the major contributor of the resonnance hybrid \(\mathrm{CH}_2-\mathrm{CH}_2 \stackrel{-}{\mathrm{CH}}-\mathrm{O}-\mathrm{CH}_2 \leftrightarrow \mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}=\mathrm{C} \mathrm{CH}_2 \)

1 I
2 II
3 Both have equal contribution
4 they are not resonance structure
NCERT-XI-275
TEST SERIES (CHEMISTRY FST)

263904 B is:

1
2
3
4 None of these
NCERT-XII-343
TEST SERIES (CHEMISTRY FST)

263905 In the reaction :

1 Ethylidene bromide
2 Bromoform
3 Ethylene dibromide
4 Ethanoyl bromide
NCERT-XI-282
TEST SERIES (CHEMISTRY FST)

263906 Given below are two statements: Statement I: Adehyde and ketones are generally prepared by oxidation of primary and secondary alcohol respectively. Statement II : Treating a nitrile with grignard reagent followed by hydrolysis yields an alcohol. In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct.
NCERT-XII-356
TEST SERIES (CHEMISTRY FST)

263907 Which of the following has the lowest nucleophilicity:

1 \(\mathrm{F}^{-}\)
2 \(\mathrm{OH}^{-}\)
3 \(\mathrm{CH}_3^{-}\)
4 \(\mathrm{NH}_2^{-}\)
NCERT-XII-273
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TEST SERIES (CHEMISTRY FST)

263902 Which of the following res onance structure is the major contributor of the resonnance hybrid \(\mathrm{CH}_2-\mathrm{CH}_2 \stackrel{-}{\mathrm{CH}}-\mathrm{O}-\mathrm{CH}_2 \leftrightarrow \mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}=\mathrm{C} \mathrm{CH}_2 \)

1 I
2 II
3 Both have equal contribution
4 they are not resonance structure
NCERT-XI-275
TEST SERIES (CHEMISTRY FST)

263904 B is:

1
2
3
4 None of these
NCERT-XII-343
TEST SERIES (CHEMISTRY FST)

263905 In the reaction :

1 Ethylidene bromide
2 Bromoform
3 Ethylene dibromide
4 Ethanoyl bromide
NCERT-XI-282
TEST SERIES (CHEMISTRY FST)

263906 Given below are two statements: Statement I: Adehyde and ketones are generally prepared by oxidation of primary and secondary alcohol respectively. Statement II : Treating a nitrile with grignard reagent followed by hydrolysis yields an alcohol. In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct.
NCERT-XII-356
TEST SERIES (CHEMISTRY FST)

263907 Which of the following has the lowest nucleophilicity:

1 \(\mathrm{F}^{-}\)
2 \(\mathrm{OH}^{-}\)
3 \(\mathrm{CH}_3^{-}\)
4 \(\mathrm{NH}_2^{-}\)
NCERT-XII-273
Join With Us for More Updates
TEST SERIES (CHEMISTRY FST)

263902 Which of the following res onance structure is the major contributor of the resonnance hybrid \(\mathrm{CH}_2-\mathrm{CH}_2 \stackrel{-}{\mathrm{CH}}-\mathrm{O}-\mathrm{CH}_2 \leftrightarrow \mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}=\mathrm{C} \mathrm{CH}_2 \)

1 I
2 II
3 Both have equal contribution
4 they are not resonance structure
NCERT-XI-275
TEST SERIES (CHEMISTRY FST)

263904 B is:

1
2
3
4 None of these
NCERT-XII-343
TEST SERIES (CHEMISTRY FST)

263905 In the reaction :

1 Ethylidene bromide
2 Bromoform
3 Ethylene dibromide
4 Ethanoyl bromide
NCERT-XI-282
TEST SERIES (CHEMISTRY FST)

263906 Given below are two statements: Statement I: Adehyde and ketones are generally prepared by oxidation of primary and secondary alcohol respectively. Statement II : Treating a nitrile with grignard reagent followed by hydrolysis yields an alcohol. In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement I and Statement II are incorrect
2 Statement I is correct but Statement II is incorrect
3 Statement I is incorrect but Statement II is correct
4 Both Statement I and Statement II are correct.
NCERT-XII-356
TEST SERIES (CHEMISTRY FST)

263907 Which of the following has the lowest nucleophilicity:

1 \(\mathrm{F}^{-}\)
2 \(\mathrm{OH}^{-}\)
3 \(\mathrm{CH}_3^{-}\)
4 \(\mathrm{NH}_2^{-}\)
NCERT-XII-273