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NEET UG CHEMISTRY MCQ: ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES
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Arrange the following in order of reactivity towards sulphonation with fuming sulphuric acid
a) Benzene b) Toluene c) Methoxy benzene d) Chloro benzene
a) Benzene b) Toluene c) Methoxy benzene d) Chloro benzene
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Correct option: B
c > b > a > d
Option B (c > b > a > d) is correct because methoxybenzene (c) is the most activating group due to the +M effect of -OCH3, followed by toluene (b) with a +I effect of -CH3, then benzene (a), and finally chlorobenzene (d) which is deactivating due to the -I effect of -Cl.
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The number of different substitution products possible when ethane is allowed to react with bromine is sunlight are :
Correct order of stability is
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Reason (R) -nitrophenol is steam volatile whereas onitrophenol is not steam volatile. An organic compound having carbon, hydrogen and sulphur contains 4% of sulphur. The minimum molecular weight of the compound is Increasing order of acid strength is
a) Phenol b) 3-Nitrophenol
c) 3,5-dinitro phenol 4) 2,4,6-trinitro phenol Isobutyl chloride is :
Reason (R) -nitrophenol is steam volatile whereas onitrophenol is not steam volatile. An organic compound having carbon, hydrogen and sulphur contains 4% of sulphur. The minimum molecular weight of the compound is Increasing order of acid strength is
a) Phenol b) 3-Nitrophenol
c) 3,5-dinitro phenol 4) 2,4,6-trinitro phenol Isobutyl chloride is :