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प्रश्न
How are 1 - nitropropane, 2-nitropropane and 2-methyl 2- nitropropane are distinguished from each other using nitrous acid?
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उत्तर
1-Nitropropane reacts with nitrous acid to form blue-coloured nitrosonitroalkanes which dissolve in NaOH to give red solution.
2-Nitropropane reacts with nitrous acid to form blue-coloured nitrosonitroalkanes which are further insoluble in NaOH because of the absence of the alpha hydrogen atom.
2-Methyl2-nitropropane does not react with nitrous acid because it has no alpha-hydrogen atom.
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संबंधित प्रश्न
What is the action of nitrous acid on primary nitroalkane?
Describe a method for the identification of primary, secondary and tertiary amines. Also write chemical equations of the reactions involved.
Give a plausible explanation for the following:
Why do primary amines have higher boiling points than tertiary amines?
When primary amine reacts with CHCl3 in alcoholic KOH, the product is _______.
(A) aldehyde
(B) alcohol
(C) cyanide
(D) an isocyanide
What is the action of Benzene Sulphonyl Chloride on primary, secondary and tertiary
amines?
What is the action of nitrous acid on secondary nitroalkane?
Describe Hinsberg method for the identification of primary, secondary and tertiary amines. Also write the chemical equations of the reactions involved.
Which of the following reactions will not give a primary amine?
On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, the organic compound formed is ______.
Primary, secondary and tertiary amines may be separated by using ______.
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Arrange the following in the increasing order of their boiling points:
A: Butanamine
B: N, N-Dimethylethanamine
C: N- Etthylethanaminamine
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Isocyanide reaction involves the intermediate formation of ______.
The presence of primary amines can be confirmed by ______.
Which of the following is not a correct statement for primary aliphatic amines?
Match List I with List II.
| List I | List II | ||
| (A) | Benzenesulphonyl chloride | (I) | Test for primary amines |
| (B) | Hoffmann bromamide reaction | (II) | Anti Saytzeff |
| (C) | Carbylamine reaction | (III) | Hinsberg reagent |
| (D) | Hoffmann orientation | (IV) | Known reaction of Isocyanates |
Choose the correct answer from the options given below:
In the reaction \[\ce{C6H5NH2 + CHCl3 + 3KOH -> A + 3B + 3C}\] the product A is:
Carbylamine test is the distinguishing test for ______.
Among dimethylamine (pKb = 3.27) and diethylamine (pKb = 3.0), which one is more basic?
