Organic Nitrogen Compounds Book Back Practice Test

12th Standard Chemistry — Organic Nitrogen Compounds: Book Back Online Practice Test

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Which of the following nitro compounds can show tautomerism?

A.Nitroethane B.2-Methyl-2-nitropropane C.Nitrobenzene D.None of these

Which of the following reactions does not yield aniline?

A.degradation of benzamide with Br2 / NaOH B.potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution C.reduction of nitrobenzene with Ni or Pt D.reduction of nitrobenzene by Sn / HCl

Which one of the following will not undergo Hofmann bromamide reaction?

A.CH3CONHCH3 B.CH3CH2CONH2 C.CH3CONH2 D.C6H5CONH2

Assertion : Acetamide on reaction with KOH and bromine gives acetic acid Reason : Bromine catalyses hydrolysis of acetamide.

A.if both assertion and reason are true and reason is the correct explanation of assertion B.if both assertion and reason are true but reason is not the correct explanation of assertion C.assertion is true but reason is false D.both assertion and reason are false

In the following sequence of reactions, CH3CH2Br --aq. NaOH--> A --KMnO4/H+--> B --NH3/heat--> C --Br2/NaOH--> D the product D is:

A.bromomethane B.alpha-bromo sodium acetate C.methanamine D.acetamide

Which one of the following nitro compounds does not react with nitrous acid?

A.CH3-CH2-CH2-NO2 B.(CH3)2CH-CH2NO2 C.(CH3)3CNO2 D.CH3-C(O)-CH(CH3)-NO2

Aniline reacts with benzoyl chloride in the presence of NaOH to give benzanilide. This reaction is known as:

A.Friedel-Crafts reaction B.Hell-Volhard-Zelinsky reaction C.Schotten-Baumann reaction D.None of these

The product formed by the reaction of an aldehyde with a primary amine is:

A.carboxylic acid B.aromatic acid C.Schiff's base D.ketone

Which of the following reactions is not correct?

A.CH3CH2NH2 --HNO2--> CH3CH2OH + N2 B.(CH3)2N-C6H5 --NaNO2/HCl--> (CH3)2N-N=NCl C.CH3CONH2 --Br2/NaOH--> CH3NH2 D.None of these

Q10

When aniline reacts with acetic anhydride, the product formed is:

A.o-aminoacetophenone B.m-aminoacetophenone C.p-aminoacetophenone D.acetanilide

Q11

The correct order of basic strength for methyl-substituted amines in aqueous solution is:

A.N(CH3)3 > N(CH3)2H > N(CH3)H2 > NH3 B.N(CH3)H2 > N(CH3)2H > N(CH3)3 > NH3 C.NH3 > N(CH3)H2 > N(CH3)2H > N(CH3)3 D.N(CH3)2H > N(CH3)H2 > N(CH3)3 > NH3

Q12

In the reaction, [3-bromo-4-nitrobenzenediazonium chloride] --A--> [1-bromo-2-nitrobenzene] the reagent 'A' is:

The chemical reaction shows the deamination of 4-bromo-2-nitrobenzenediazonium chloride into 1-bromo-3-nitrobenzene in the presence of reagent A.

A.H3PO2 and H2O B.H+ / H2O C.HgSO4 / H2SO4 D.Cu2Cl2

Q13

In the following reaction sequence, C6H5NO2 --Fe/HCl--> A --NaNO2/HCl, 273K--> B --H2O, 283K--> C the product 'C' is:

A.C6H5-OH B.C6H5-CH2OH C.C6H5-CHO D.C6H5NH2

Q14

Nitrobenzene on reaction with concentrated \(\text{HNO}_3 / \text{H}_2\text{SO}_4\) at \(80\text{-}100^\circ\text{C}\) forms which one of the following products?

A.1,4-dinitrobenzene B.2,4,6-trinitrobenzene C.1,2-dinitrobenzene D.1,3-dinitrobenzene

Q15

A compound with molecular formula \(\text{C}_5\text{H}_{13}\text{N}\) reacts with \(\text{HNO}_2\) to give an optically active compound. The compound is:

A.pentan-1-amine B.pentan-2-amine C.N,N-dimethylpropan-2-amine D.diethyl methyl amine

Q16

Secondary nitroalkanes react with nitrous acid to form:

A.red solution B.blue solution C.green solution D.yellow solution

Q17

Which of the following amines does not undergo acetylation?

A.t-butylamine B.ethylamine C.diethylamine D.triethylamine

Q18

Which one of the following is most basic?

A.2,4-dichloroaniline B.2,4-dimethylaniline C.2,4-dinitroaniline D.2,4-dibromoaniline

Q19

When \(\text{C}_2\text{H}_5\text{ONO}\) is reduced with \(\text{Sn} / \text{HCl}\), the pair of compounds formed are:

A.Ethanol, hydroxylamine hydrochloride B.Ethanol, ammonium hydroxide C.Ethanol, hydroxylamine D.Ethylamine, water

Q20

What is the IUPAC name for the amine with structure \(\text{(CH}_3)_2\text{N-C(CH}_3\text{)(CH}_2\text{CH}_3)_2\)?

A.3-dimethylamino-3-methylpentane B.3-(N,N-diethyl)-3-aminopentane C.3-N,N-trimethylpentanamine D.N,N-dimethyl-3-methylpentan-3-amine

Q21

Identify the product 'P' in the following reaction sequence:

வேதி வினையினைக் காட்டும் படம் மற்றும் அதன் விளைபொருள் தேர்வுகள்.

A.(figure A)

B.(figure B)

C.(figure C)

D.(figure D)

Q22

Ammonium salt of benzoic acid is heated strongly with \(\text{P}_2\text{O}_5\) and the product so formed is reduced and then treated with \(\text{NaNO}_2 / \text{HCl}\) at low temperature. The final compound formed is:

A.Benzene diazonium chloride B.Benzyl alcohol C.Phenol D.Nitrosobenzene

Q23

Identify X in the sequence given below:

வேதி வினை வரிசை மற்றும் வினைப்பொருள் X-க்கான தேர்வுகள்.

A.(figure A)

B.(figure B)

C.(figure C)

D.(figure D)

Q24

Among the following, the reaction that proceeds through an electrophilic substitution, is:

A.(figure A)

B.(figure B)

C.(figure C)

D.(figure D)

Q25

The major product of the following reaction is:

வேதி வினையின் முதன்மை விளைபொருள் தேர்வுகள்.

A.(figure A)

B.(figure B)

C.(figure C)

D.(figure D)

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This free online practice test covers Organic Nitrogen Compounds from the 12th Standard Chemistry (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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