Amines Test

Result

Amines Test - 79

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Which of the following is most basic ?

A

B

C

D

Solution
Question 2
1 / -0

In the Gabriel's phthalimide synthesis, phthalimide is treated first with

A
$$C_2H_5I / KOH$$

B
Ethanolic Na

C
Ethanol and $$H_2SO_4$$

D
Ether and $$LiAlH_4$$

Solution
Question 3
1 / -0

The correct order of decreasing basicity of the following compounds is:

A
$$I > II > III > IV$$

B
$$II > I > III > IV$$

C
$$III > IV > I > II$$

D
$$II > I > IV > III$$

Solution

The order of decreasing basicity of the given compounds is (C) $$III > IV > I > II.$$

As the $$−NH_2$$ group has a lone pair of electrons on nitrogen to donate to electron-deficient species.

Hence, its power to donate electrons is increased when an electron donation group $$(+R, +I)$$ is attached and its donating power is decreased when an electron-withdrawing group is attached at its para position.

Since $$NO_2$$ is an electron-withdrawing group hence it decreases the electron density over $$−NH_2$$ group hence it decreases the basicity.

On the other hand $$−OCH_3 (+M \text{ effect})$$ group increases the electron density more than the $$CH_3\ group (+I \text{effect}).$$
Question 4
1 / -0

$$(RCO)_2 NH$$ is

A
Primary amine

B
Secondary amine

C
Secondary amide

D
Tertiary amide

Solution

$$R-\overset {\overset {\displaystyle O}{||}}{C}-NH_2 \Rightarrow \text {Primary amide}$$

$$(R-\overset {\overset {\displaystyle O}{||}}{C})_2-NH \Rightarrow \text {Secondary amide}$$

Option C is correct.
Question 5
1 / -0

$$ C_{3}H_{9}N $$ represents

A
Primary amine

B
Secondary amine

C
Tertiary amine

D
All of these

Solution

$$C_{3}H_{9}N$$ can form all the 3 amines.

$$CH_{3}\underset{1^{o} amine}{CH_{2}CH_{2}}-NH_{2},CH_{3}-\underset{2^{o} amine}{CH_{2}-NH}-CH_{3}$$
Question 6
1 / -0

Rank the following compound in the order of decreasing basicity.

A
$$I, \ II,\ III$$

B
$$III, \ II, \ I$$

C
$$II, \ I, \ III$$

D
$$III, \ I, \ II$$

Solution

$$III$$ is the stronger base due to lack of delocalisation of lone pair of electron. $$II$$ is weaker base than $$I$$ due to electron withdrawing resonance effect of $$-NO_2$$.
Question 7
1 / -0

Triaminobenzene is a

A
$$2^{o}$$ amine

B
$$3^{o}$$ amine

C
$$1^{o}$$ amine

D
Quarternary salt

Solution

All nitrogen represents $$1^oC$$ amine in the Triaminobenzene.
Option C is correct.
Question 8
1 / -0

Urotropine is

A
Hexamethylene tetramine

B
Hexaethylene tetramine

C
Hexamethylene diamine

D
None of these

Solution

$$\text{Urotropin is hexa-methylene tetramine .It is used as a medicine to treat urinary infections.}$$
Question 9
1 / -0

When aniline is treated with sodium nitrate and hydrocholric acid at O.C, it gives

A
Phenol and $$ N_{2} $$

B
Diazonium salt

C
Hydrazo compound

D
No reaction take place

Solution

$$C_{6}H_{5}NH_{2} \xrightarrow {NaNO_{2} + HCl\,O^{\circ}C} C_{6}H_{5}N_{2}Cl$$
Option B is correct.
Question 10
1 / -0

Action of diazomethane on phenol liberates

A
$$ O_2 $$

B
$$ H_2 $$

C
$$ N_2 $$

D
$$ CO_2 $$

Solution

Option C is correct.