Organic Chemistry Multiple Choice Questions and Answers

(1) Which of the following plant is the natural source of pyridine?

[A] Atropa belladonna

[B] Ocimum tenuiflorum

[C] Azadirachta indica

[D] Ficus religiose

Answer: Atropa belladonna

(2) Why is extraction of pyridine from coal tar or as a byproduct of coal gasification ineffective?

[A] Less concentration of desired compound

[B] This method is expensive

[C] Reactive is rare

[D] Dangerous procedure

Answer: Less concentration of desired compound

(3) Which of the following derivative of pyridine is mostly found in mycobacterium tuberculosis?

[A] Niacin

[B] Nicotinamide

[C] Nicotinic acid

[D] Strychnine

Answer: Nicotinic acid

(4) Mycobacterium tuberculosis and Escherichia coli produce nicotinic acid by condensation of which of the following compounds?

[A] Glyceraldehyde 3-phosphate

[B] Amino acid

[C] Pyrrole

[D] acetylene

Answer: Pyrrole

(5) Which of the following derivative of pyridine is mostly found in mammals?

[A] Nicotinamide

[B] Vitamin B6

[C] Nicotinic acid

[D] Strychnine

Answer: Nicotinic acid

(6) Mycobacterium tuberculosis and Escherichia coli produce nicotinic acid by condensation of which of the following compounds?

[A] Glyceraldehyde 3-phosphate

[B] Kynurenine

[C] Pyrrole

[D] Tryptophan

Answer: Pyrrole

(7) What is the name of the reaction given below when condensation of acrolein and acetaldehyde take place?

[A] Chichibabin synthesis

[B] Dealkylation of alkylpyridine

[C] Hantzsch pyridine synthesis

[D] Bonnemann cyclisation

Answer: Chichibabin synthesis

(8) In the synthesis of pyridine by Chichibabin synthesis, synthesis of acroloien is done which method?

[A] Knoevenagel Condensation

[B] Aldol condensation

[C] Dieckmann condensation

[D] Claisen condensation

Answer: Knoevenagel Condensation

(9) Which of the following reagent can’t be used as the reagent in the dealkylation of alkylpyridines in the pyridine synthesis?

[A] Vanadium oxide

[B] Nickel based catalyst

[C] Silver or platinum-based catalyst

[D] Copper catalyst

Answer: Copper catalyst

(10) Which of the following catalyst can be used in the synthesis of pyridine by Bönnemann cyclization?

[A] Vanadium oxide

[B] Nickel based catalyst

[C] Silver or platinum-based catalyst

[D] Cobalt catalyst

Answer: Cobalt catalyst

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Organic Chemistry Questions and Answers – Source of Pyridine Compounds | Organic Chemistry Multiple Choice Questions and Answers

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