How will the following be converted? (Give chemical equation)
(a)[1.0]
Ethyl bromide to ethyl isocyanide
(b)[1.0]
Aniline to benzene diazonium chloride
(c)[1.0]
Benzene diazonium chloride to phenol
No answer yet.
Aliphatic Amines - ISC Class 12 Chemistry Questions with Answers, Page 2
33 past-paper questions on Aliphatic Amines from ISC Class 12 Chemistry papers (2027-2018), newest first, in full. Questions 21-33 are on this page, 20 to a page. Tap "Show answer" under a question to see its answer.
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State reasons for the following:
(i)[1.0]
Ethylamine is soluble in water whereas aniline is not soluble in water.
(ii)[1.0]
Aliphatic amines are stronger bases than aromatic amines.
No answer yet.
Identify the compounds [A], [B] and [C] in the following reactions:
(a)[1.5]
$\text{CH}_3\text{COOH} \xrightarrow[\Delta]{\text{NH}_3} [\text{A}] \xrightarrow{\text{Br}_2 + \text{KOH}} [\text{B}] \xrightarrow{\text{CHCl}_3 + \text{NaOH (alc)}} [\text{C}]$
(b)[1.5]
$\text{CH}_3\text{Br} \xrightarrow{\text{KCN}} [\text{A}] \xrightarrow{\text{LiAlH}_4} [\text{B}] \xrightarrow[273\text{ K}]{\text{HNO}_2} [\text{C}]$
No answer yet.
How will the following be converted? (Give chemical equations)
(a)[1.0]
Benzenediazonium chloride to Benzene
(b)[1.0]
Ethylamine to ethyl alcohol
(c)[1.0]
Methylamine to methyl isocyanide
No answer yet.
An organic compound ‘A’ on treatment with aq. $\text{KCN}$ produces compound ‘B’. Compound ‘B’ on reduction with $\text{Na}/\text{C}_2\text{H}_5\text{OH}$ gives compound ‘C’ with molecular formula $\text{C}_2\text{H}_7\text{N}$. Compound ‘C’ reacts with $\text{NaNO}_2$ and $\text{HCl}$ to form compound ‘D’. Compound ‘D’ on treatment with acetic acid in presence of conc. $\text{H}_2\text{SO}_4$ produces a sweet smelling compound ‘E’.
(i)[2.0]
Identify the compounds ‘A’ to ‘E’.
(ii)[1.0]
Name the reaction for the formation of compound ‘E’ from compound ‘D’.
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Identify the compounds A, B and C in the following reactions:
(a)[1.5]
$\text{C}_6\text{H}_5\text{NO}_2 \xrightarrow{\text{Sn} + \text{HCl}} \text{A} \xrightarrow[273\text{ K} - 278\text{ K}]{\text{NaNO}_2 + \text{HCl}} \text{B} \xrightarrow{\text{H}_2\text{O}} \text{C}$
(b)[1.5]
$\text{CH}_3\text{CN} \xrightarrow{\text{H}_2\text{O} / \text{H}^+} \text{A} \xrightarrow{\text{NH}_3 / \text{heat}} \text{B} \xrightarrow{\text{Br}_2 + \text{KOH}} \text{C}$
No answer yet.
(i)
Arrange the following in the increasing order of their basic strength: $\text{C}_2\text{H}_5\text{NH}_2$, $\text{C}_6\text{H}_5\text{NH}_2$, $(\text{C}_2\text{H}_5)_2\text{NH}$.
(ii)
What are the products formed when benzene diazonium chloride reacts with phenol in weak alkaline medium? (Give equation).
No answer yet.
Give balanced equation for each of the following:
(i)
Ethylamine and nitrous acid
(ii)
Aniline and acetyl chloride
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Primary amine when warmed with chloroform and alc. $\text{KOH}$ yields:
- (a)cyanides
- (b)isocyanides
- (c)benzene diazonium chloride
- (d)secondary amines
No answer yet.
State reasons for the following:
(i)
Ethylamine is soluble in water whereas aniline is insoluble in water.
(ii)
Aliphatic amines are stronger bases than aromatic amines.
No answer yet.
Complete and balance the following equations:
(i)
$\text{C}_6\text{H}_5\text{NH}_2 + \text{CH}_3\text{COCl} \rightarrow \text{________} + \text{___________}$
(ii)
$\text{C}_2\text{H}_5\text{NH}_2 + \text{HNO}_2 \rightarrow \text{________} + \text{___________} + \text{___________}$
No answer yet.
Arrange the following as directed:
(a)
Increasing order of basic strength:
Aniline, p – nitroaniline and p – toluidine.
(b)
Decreasing order of basic strength in gas phase:
$\text{C}_2\text{H}_5\text{NH}_2$, $(\text{C}_2\text{H}_5)_2\text{NH}$, $(\text{C}_2\text{H}_5)_3\text{N}$ and $\text{NH}_3$.
(c)
Increasing order of solubility in water:
$\text{C}_6\text{H}_5\text{NH}_2$, $(\text{C}_2\text{H}_5)_2\text{NH}$, $\text{C}_2\text{H}_5\text{NH}_2$.
No answer yet.
(a)
Arrange the following in the increasing order of their basic strength:
$\text{C}_2\text{H}_5\text{NH}_2$, $\text{C}_6\text{H}_5\text{NH}_2$, $(\text{C}_2\text{H}_5)_2\text{NH}$
(b)
Give a balanced chemical equation to convert methyl cyanide to ethyl alcohol.
(c)
What happens when benzene diazonium chloride reacts with phenol in weak alkaline medium? (Give balanced equation).
No answer yet.