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Organic Chemistry Questions and Answers – Preparation of Nitro Compounds | Organic Chemistry Multiple Choice Questions and Answers

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Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) Which of the following is used as a reactant for the nitration of benzene to form nitrobenzene?
[A] HNO2
[B] HNO3
[C] Mixture of HNO2 AND HNO3
[D] Mixture of HNO2 and H2SO4 
Answer: Mixture of HNO2 AND HNO3
(2) What is the name of the following reaction?

[A] Ter meer reaction
[B] Riemer tiemann reaction
[C] Perkin condensation
[D] Ullmann reaction
Answer: Ter meer reaction

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(3) In Ter Meer reaction, a method of preparation of nitro compound, which of the following used as reagent?
[A] HNO2
[B] HNO3
[C] NaNO2
[D] RX (alkyl halide)
Answer: NaNO2
(4) What will be the product if 1,1-halonitroalkane undergoes nucleophilic aliphatic substitution reaction in presence of ethanol?
[A] 1,1-dinitro dimer
[B] 1,2-dinitro dimer
[C] 1.-nitro compound
[D] 2-nitrocompound
Answer: 1,1-dinitro dimer
(5) What will be the product if 1,1-halonitroalkane undergoes nucleophilic aliphatic substitution reaction in presence of potassiam hydroxide?
[A] 1,1-dinitro dimer
[B] 1,2-dinitro dimer
[C] 1.-nitro compound
[D] 2-nitrocompound
Answer: 1,2-dinitro dimer
(6) Which of the following is not a natural occurring nitro compound?
[A] Chloramphenicol
[B] 2-Nitrophenol
[C] 3-Nitropropionic acid
[D] nitrobenzene
Answer: nitrobenzene
(7) Which gives a meta-nitro compound as the main product upon nitration with a nitric acid-sulfuric acid mixture?

[A] (a)
[B] (b)
[C] (c)
[D] (d)
Answer: (c)
(8) Which combination of reagents used in the indicated order with benzene will give m-nitropropylbenzene?
[A] i) HNO3/H2SO4, ii) CH3CH2CH2Cl/AlCl3
[B] i) CH3CH2CH2Cl/AlCl3, ii) HNO3/H2SO4
[C] i) CH3CH2COCl/AlCl3, ii) HNO3/H2SO4, iii) H2NNH2/NaOH
[D] i) HNO3/H2SO4, ii) CH3CH2COCl/AlCl3, iii) H2NNH2/NaOH
Answer: i) HNO3/H2SO4, ii) CH3CH2COCl/AlCl3, iii) H2NNH2/NaOH
(9) Nitration of furan using acetyl nitrate also leads to a 2,5-addition product. How can this competing process be suppressed?
[A] By using concentrated nitric and sulfuric acids instead of acetyl nitrate
[B] By carrying out the reaction at higher temperatures
[C] By carrying out the nitration in the presence of pyridine
[D] By using nitric acid instead of acetyl nitrate
Answer: By carrying out the nitration in the presence of pyridine
(10) Predict the major product of the following reaction.

[A] o-nitrobenzaldehyde and p-nitrobenzaldehyde
[B] m-nitrobenzaldehyde
[C] o-formylbenzenesulfonic acid and p-formylbenzenesulfonic acid
[D] m-formylbenzenesulfonic acid
Answer: m-nitrobenzaldehyde

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