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NEET UG CHEMISTRY MCQ: ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES
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In Lassaigne’s test, a black colour is obtained if the organic compound contains sulphur. The black colour is due to
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Correct option: B
Option B () is correct because in Lassaigne's test, the black color indicates the presence of sulfur, which reacts with lead acetate to form lead sulfide ().
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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
Assertion (A) A mixture of o-nitrophenol and p-nitrophenol can be separated by steam distillation.
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 :