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NEET Exam  >  NEET Tests  >  Test: Properties of Amines (February 28) - NEET MCQ

Test: Properties of Amines (February 28) - NEET MCQ


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10 Questions MCQ Test - Test: Properties of Amines (February 28)

Test: Properties of Amines (February 28) for NEET 2024 is part of NEET preparation. The Test: Properties of Amines (February 28) questions and answers have been prepared according to the NEET exam syllabus.The Test: Properties of Amines (February 28) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Properties of Amines (February 28) below.
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Test: Properties of Amines (February 28) - Question 1
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 Which one of the following is the weakest base in gaseous phase?

Detailed Solution for Test: Properties of Amines (February 28) - Question 1

 

As the number of alkyl group increases, due to +I effect the basicity of amines increases.

Test: Properties of Amines (February 28) - Question 2
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Which one of the following is a tertiary amine?

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The correct answer is Option B.


Aniline : 

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Test: Properties of Amines (February 28) - Question 3
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 Amines are basic in nature as they have:

Detailed Solution for Test: Properties of Amines (February 28) - Question 3

The correct answer is Option B.
Amines are basic in nature because the nitrogen atom in amines possesses a lone pair that can be donated.

According to the Lewis acid-base concept, amines can donate an electron pair, so they are Lewis bases.

Also, Brønsted-Lowry bases can accept a proton to form substituted ammonium ions.
So, amines are bases according to both the Lewis and the Brønsted-Lowry theories.

Test: Properties of Amines (February 28) - Question 4
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Which of the following amine liberates nitrogen gas on reaction with HNO2 ?
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The correct answer is Option D.
Only primary amines liberate nitrogen gas on reaction with HNO2.

Test: Properties of Amines (February 28) - Question 5
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Methylamine reacts with HNO2 to form _________.
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Test: Properties of Amines (February 28) - Question 6
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The reaction of primary amine with Chloroform and ethanoic solution of KOH is called:
Detailed Solution for Test: Properties of Amines (February 28) - Question 6

The carbylamine reaction, also known as Hoffman's isocyanide test is a chemical test for detection of primary amines. In this reaction, the analyte is heated with alcoholic potassium hydroxide and chloroform. If a primary amine is present, the isocyanide (carbylamine) is formed which are foul smelling substances.

Test: Properties of Amines (February 28) - Question 7
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Which of the following reaction is not given by aniline?
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Test: Properties of Amines (February 28) - Question 8
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Aniline on treatment with sodium hypochlorite gives:
Detailed Solution for Test: Properties of Amines (February 28) - Question 8

The correct answer is Option C.

Test: Properties of Amines (February 28) - Question 9
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 Which of the following has highest boiling point?
Detailed Solution for Test: Properties of Amines (February 28) - Question 9

The correct answer is Option D.

Because C4H9NH2 is primary amine and can form hydrogen bonding more than secondary amine (C2H5)2NH and tertiary amine C2H5N(CH3)2 . More hydrogen bonding  leads to strong bonding between the molecules, hence increases the boiling point.

Test: Properties of Amines (February 28) - Question 10
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Hoffmann Bromamide Degradation reaction is shown by __________.
Detailed Solution for Test: Properties of Amines (February 28) - Question 10

The Correct answer is option B
Hoffman bromamide degradation reaction is shown by ArCONH2​.
Where the aryl amide is converted to aryl amine in the presence of Br2​ and NaOH

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