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Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - JEE MCQ


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23 Questions MCQ Test 35 Years Chapter wise Previous Year Solved Papers for JEE - Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced

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Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 1

The compound which on reaction with aqueous nitrous acid at low temperature produces an oily nitrosamine is

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 1

NOTE : Secondary amines (aliphatic as well as aromatic) react with nitrous acid to form Nnitrosoamines.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 2

Acetamide is treated separately with the following reagents.

Which one of these would give methylamine?

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 2

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Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 3

Carbylamine test is performed in alcoholic KOH by heating a mixture of :

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 3

NOTE : Only primary aliphatic and aromatic amines give this test.

CHX3 + RNH2 + 3KOH → RNC + 3 KX + 3H2O

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 4

The compound that is most reactive towards electrophilic nitration is :

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 4

TIPS/Formulae : Toluene has electron-donating methyl group. Hence reacts fastest while others have either electron withdrawing groups (i.e. – COOH or – NO2 etc.) or no substituent.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 5

If two compounds have the same empirical formula but different molecular fomulae they must have

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 5

TIPS/Formulae : Empirical Formula = n × Molecular formula
Solution : Since the molecular formula is n times the empirical formula, therefore, different compounds having the same empirical formula must have different molecular weights.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 6

Amongst the following, the most basic compound is :

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 6

In benzylamine, electron pair on nitrogen is not delocalised due to lack of conjugation; while in all other compounds it is delocalised and hence lesser available for protonation.


Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 7

The formation of cyanohydrin from a ketone is an example of :

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 7

TIPS/Formulae : The addition is initiated by the attack of CN group which is a nucleophile.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 8

Butanonitrile may be prepared by heating :

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 8

TIPS/Formulae : In the formation of cyanohydrin number of carbon atoms in parent chain increases by one.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 9

In the reaction p-chlorotoluene with KNH2 in liq. NH3,the major product is:

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 9


Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 10

The most unlikely representation of resonance structures of p-nitrophenoxide ion is

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 10

N can't have more than 8 electrons in its valence shell as it does not have any d orbital. In (c), N has 10 electrons.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 11

Among the following, the strongest base is

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 11

Aliphatic amines are more basic than aromatic amines because in aliphatic amines electron pair on nitrogen is not involved in resonance.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 12

The correct order of basicities of the following compounds is

2. CH3 - CH2 - NH2

3. (CH3)2NH

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 12


The protonated form of II would be III which is more stable because here the contributing structures (III) and (IV) are equivalent.

In   the availability of electron pair increases due to the +I effect of two CH3 groups while in  CH3CH2NH2, +I effect of only one ethyl group is operative. In  the electron availability on nitrogen decreases due to resonance as shown below


Therefore, the order of basic strength would be 1 > 3 > 2 > 4.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 13

Compound 'A' (molecular formula C3H8O) is treated with acidified potassium dichromate to form a product 'B' (molecular formula C3H6O). 'B' forms a shining silver mirror on warming with ammonical silver nitrate. 'B' when treated with an aqueous solution of H2NCONHNH2.HCl and sodium acetate gives a product 'C'. Identify the structure of 'C'.

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 13

NOTE :  Reaction of (B) indicates that it is an aldehyde which thus should be C2H5CHO or CH3CH2CHO, hence C should be CH3CH2CH = NNHCONH2

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 14

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 14


Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 15

The product A will be

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 15

Two moles of NH2 ions will abstract two moles of most acidic hydrogen out of the four moles of hydrogen present per mole of the acidic compound. The acidic strength is in the order:

–COOH > –OH (phenolic having NO2 group) > –OH (phenolic) > alkynic H.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 16

Benzamide on reaction with POCl3 gives

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 16

NOTE : POCl3 is a dehydrating agent . Hence

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 17

The major product obtained when Br2/Fe is treated with

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 17

TIPS/Formulae :– NH is an activating group where as  group is a deactivating group.
Hence electrophilic substitution will be governed by the ring having 

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 18

In the compound given below the correct order of the acidity of the positions X, Y and Z is

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 18

(i) Position (X) is most acidic due to – COOH group.
(ii) –NH3+ group at position Y is more acidic than at Z because of presence of electron withdrawing – COOH group in close proximity. Hence – NH3+ group at position Z is least acidic.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 19

When benzenesulfonic acid and p-nitrophenol are treated with NaHCO3, the gases released respectively are

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 19

None of the given options is correct. Benzene sulphonic acid, being stronger acid than carbonic acid, would liberate CO2 when treated with sodium bicarbonate, but p-nitrophenol, being less acidic than carbonic acid, will not liberate CO2.

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 20

In the following reaction, 

CH3 NH2 + CHCl3+ KOH → Nitrogen containing compound + KCl + H2O.

The nitrogen containing compound is

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 20

This is an example of carbylamine reaction

CHCl3 + RNH2+ KOH 

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 21

The correct stability order of the following resonance structures is




Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 21

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 22

The major product of the following reaction is

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 22

 

Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 23

Amongst the compounds given, the one that would form a brilliant colored dye on treatment with NaNO2 in dil. HCl followed by addition to an alkaline solution of β-naphthol is

Detailed Solution for Test: Single Correct MCQs: Compounds Containing Nitrogen | JEE Advanced - Question 23

Only primary aromatic amines undergo diazotisation followed by coupling.

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