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CBSE - Class 12 Chemistry Amines Worksheet

Arrange the following:
(ii) In increasing order of basic strength:
\(C_{6}H_{5}NH_{2}\), \(C_{6}H_{5}N(CH_{3})_{2}\), \((C_{2}H_{5})_{2}NH\) and \(CH_{3}NH_{2}\)

Why cannot aromatic primary amines be prepared by Gabriel phthalimide synthesis?

Arrange the following:
(i) In decreasing order of the \(pK_{b}\) values:
\(C_{2}H_{5}NH_{2}\), \(C_{6}H_{5}NHCH_{3}\), \((C_{2}H_{5})_{2}NH\) and \(C_{6}H_{5}NH_{2}\)

Give plausible explanation for each of the following:
(ii) Why do primary amines have higher boiling point than tertiary amines?

Give the structures of A, B and C in the following reactions:

Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines.
(i) \((CH_{3})_{2}CHNH_{2}\)

Give the structures of A, B and C in the following reactions:

Write short notes on the following:
(i) Carbylamine reaction

Give plausible explanation for each of the following:
(i) Why are amines less acidic than alcohols of comparable molecular masses?

10.

Write short notes on the following:
(vii) Gabriel phthalimide synthesis.

11.

Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines.
(ii) \(CH_{3}(CH_{2})_{2}NH_{2}\)

12.

How will you convert:
(i) Ethanoic acid into methanamine

13.

Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines.
(iii) \(CH_{3}NHCH(CH_{3})_{2}\)

14.

Give the structures of A, B and C in the following reactions:

15.

Accomplish the following conversions:
(i) Nitrobenzene to benzoic acid

16.

Arrange the following:
(vi) In increasing order of solubility in water:
\(C_{6}H_{5}NH_{2}\), \((C_{2}H_{5})_{2}NH\), \(C_{2}H_{5}NH_{2}\).

17.

This is an Annual Report of an Indian company. How would you categorize it in terms of market capitalisation?

Small cap

Mid Cap

Large Cap

Hard to say

18.

Which financial statement should a trader be most concerned with?

Balance Sheet

Cash Flow

Annual Earnings

Quarterly Earnings

19.

Give plausible explanation for each of the following:
(iii) Why are aliphatic amines stronger bases than aromatic amines?

20.

Complete the following reactions:
(ii) \(C_{6}H_{5}N_{2}^{+}Cl^{-} + H_{3}PO_{2} + H_{2}O \rightarrow\)

Worksheet Answers

17.

Option C

Solution:

Here's an article to help you understand the classification better:

https://www.indiainfoline.com/article/news-personal-finance/difference-between-large-cap-mid-cap-and-small-cap-stocks-118022800227_1.html

18.

Option D

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