Heterocyclic Compounds Quiz 1
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Why is extraction of pyridine from coal tar or as a byproduct of coal gasification ineffective?
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Mycobacterium tuberculosis and Escherichia coli produce nicotinic acid by condensation of which of the following compounds?
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Which element is present as hetero atom in pyridine?
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Pyridine is a which type of heterocyclic compound from the following options?
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Which of the following is a not a five membered ring?
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When Lithiumtetrahydroborate in the presence of water reacts with pyridine, which product is formed?
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Electron-withdrawing groups inhibit the Chichibabin reaction. Which of the following statement is not true about this fact?
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What is the reactivity order in the following five membered heterocyclic compounds?
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Pyridine undergoes nucleophilic substitution with excess of NaNH2 at 100? to give which of the following?
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What is the product when thiophene reacts with Br2 in benzene?
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In the synthesis of pyridine by Chichibabin synthesis, synthesis of acroloien is done which method?
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Pyridine undergoes nucleophilic substitution with NaNH2 at 100? to give which of the following?
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The electron of Nitrogen participating in the resonance in pyridine is present in which orbital?
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Nucleophilic substitution reaction of pyridine is most effective in which of the conditions?
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Which of the following five membered rings is most resonance stabilized?
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What is the smallest angle in pyridine ring?
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What is name of the reaction when piperdine is converted by pyridine commercially?
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At which position of pyridine electrophilic substitution reaction is most preferred?
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By which of the following agent there will be incomplete reduction of pyridine?
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Five membered rings come under which category of heterocycle classification on the basis of chemical behavior?
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Which of the following derivative of pyridine is mostly found in mammals?
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What is the product when pyrrole reacts with Br2 in ethanol?
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How many number of resonating structure stabilises a pyridine molecule?
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Which of the following is the correct range for the bond length in the pyridine molecule?
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What is the greatest angle in pyridine ring?
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What is the dipole moment of the pyridine?
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Pyridine undergoes nucleophilic substitution with phenyl lithium at 100? to give which of the following?
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Which of the following plant is the natural source of pyridine?
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Which of the following electrophilic substitution reaction is not possible in pyridine?
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At which position of pyridine nucleophilic substitution reaction is most preferred?
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Which of the following derivative of pyridine is mostly found in mycobacterium tuberculosis?
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Which of the following is not true about the five membered rings?
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Which of the following reagent can?t be used as the reagent in the dealkylation of alkylpyridines in the pyridine synthesis?
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Pyridine come under which category of heterocycle classification on the basis of chemical behavior?
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When lithium aluminium hydride reacts with pyridine, which product is not formed?
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What will be the product if reaction with hydrogen gas in the presence of Raney nickel takes place?
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