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12th Chemistry Weekly Test - 4 ( Organic Nitrogen Compounds )

St. Britto Hr. Sec. School - Madurai

12th Chemistry Weekly Test - 4 ( Organic Nitrogen Compounds )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

The gas leaked from storage tank of the union Carbide plant in Bhopal gas tragedy was

Phosgene
methyl isocyanide
methyl isocyanate
methyl isothiocyanide

Which one of the following will not undergo Hofmann bromamide reaction

CH₃CONHCH₃
CH₃CH₂CONH₂
CH₃CONH₂
C₆H₅CONH₂

Which of the following reagent can be used to convert nitrobenzene to aniline

Sn / HCl
ZnHg / NaOH
Sn / HCl LiA1H₄
All of these

An organic compound C₇H₉N answers . carbylamine reaction but produces primary alcohol with nitrous add. The compound maybe

p-toludine
o-toluidine
benzylamine
m-toludine

Nitromethane condenses with acetaldehyde to give

nitro propane
1-nitro-2-propanol
2-nitro-1 -propanol
3-nitro propanol

Which one of the following is the most basic?

Ammonia
Methylamine
Dimethylamine
Aniline

Assertion(A): Ethyl amine gives positive carbylamine and mustard oil reaction.

Reason (R) : Ethyl amine is a 1^o amine.

(A) and (R) are true and (R) is the correct explanation.of (A)
Both (A) and (R) are true but (R) does not explain (A)
(A) is true but (R) is false
Both (A) and (R) are false

Bromo ethane reacts with silver nitrite to give

C₂H₅NO₂
C₂H₅-O-NO
C₂H₅Ag+NaBr
C₂H₅NC

The nitro group can be reduced to primary amino group by _____________

Sn / conc. HCl
Zn dust
Zn I NH₄Cl
Zn / NaOH

Aniline + benzoylchloride \(\xrightarrow [ ]{ \quad NaOH\quad } \) C₆H₅ - NH- COC₆H₅ this reaction is known as

Friedel - crafts reaction
HVZ reaction
Schotten- Baumann reaction
None of these

An organic compound 'A' with molecular formula C₃H₉N neither give nitrogen nor yellow oily liquid with HNO₂.Then A is

CH₃CH₂-CH₂-NH₂
CH₃-CH₂- NH -CH₃
All of these

When nitromethane is reduced with Zn dust + NH₄ Cl in neutral medium, we get

CH₃NH₂
C₂H₅NH₂
CH₃NHOH
C₂H₅COOH

The compound which gives an oily nitrosoamine on reaction with nitrous acid at low temperature is _______________

C₂H₅NH₂
(CH₃)₂NH
(CH₃)₃N
(CH₃)₂CHNH

Nitrobenzene on reaction with fuming nitric acid at 80-100°C forms which one of the following products?

1,4 - dinitrobenzene
2,4,6 - tirnitrobenzene
1,2 - dinitrobenzeqe
1,3 - dinitrobenzene

Secondary nitro alkanes react with nitrous acid to form

red solution
blue solution
green solution
yellow solution

Oxidation of aniline with acidified K₂Cr₂O₇ gives ___________

p-benzoquinone
benzoic acid
benzaldehyde
benzyl alcohol

The product formed when an aldehyde reacts with a primary amine is ____________

Carboxylic acid
Carbylamine
Schiff's base
Azodyes

Identify the amide which will not undergo Hofmann bromamide reaction

CH₃CONHCH₃
CH₃CH₂CONH₂
CH₃CONH₂
both (b) and (c)

When aniline reacts with acetic anhydride the product formed is

o - aminoacetophenone
m-aminoacetophenone
p - aminoacetophenone
acetanilide

The basic character of amines is due to the

tetrahedral structure
presence of nitrogen atom
lone pair of electrons on nitrogen atom
high electronegativity of nitrogen

C₆H₅CHO +Methylamine \(\longrightarrow \) Y + H₂ SO₄\(\longrightarrow \)p pamino benzene sulphonic acid. Then X andY are

Schiff's Base, C₆H₅NH₂
C₆H₆, C₆H₅CHO
benzal- N- methyl amine, Toluene
None ofthese

CH₃CH₂Br\(\xrightarrow [ \Delta ]{ \ \quad aq\ NaOH\quad \ } A\xrightarrow [ \Delta ]{ KMnO_{ 4 }/H^{ + } } \)

B\(\xrightarrow [ \Delta ]{ \quad \quad NH_{ 3 }\quad \quad } C\xrightarrow [ ]{ Br_{ 2 }/NaOH } D\)

'D' is

bromomethane
\(\alpha \) - bromo sodium acetate
methanamine
acetamide

Oxidation of aniline with acidified potassium dichromate give~

p-benzo quinone
benzoic acid
benzaldehyde
benzyl alcohol

The order of basic strength for methyl substituted amines in aqueous solution is

N(CH₃)₃ > N(CH₃)₂H > N(CH₃)\(\\H_2\) > \(\\NH_3\)
N(CH₃)\(\\H_2\) > N(CH₃)₂H > N(CH₃)₃ >NH₃
NH₃> N(CH₃)H₂ > N(CH₃)₂H > N(CH₃)₃
N(CH₃)₂H > N(CH₃)H₂> N(CH₃)₃> NH₃

Tertiary amine is less basic than secondary amine because of

delocalisation of 1t electrons
resonance effect
inductive effect
steric effect

The isomerism exhibited by 1-nitro butane and 1-nitro - 2- methyl propane is _____________

chain
tautomerism
position
functional

The reaction between benzene diazonium chloride and benzene in the presence of NaOH is ________________

Perkin's reaction
Gattermann's reaction
Sandmeyer reaction
Gomberg-Bachmann reaction

Aniline treated with H₂SO₄forms _______________

S-diphenyl urea
acetanilide
m-amino benzene sulphonic acid
sulphanilic acid

Assertion(A): Aniline decolourises bromine water with the formation of white precipitate which is TNT.

(A) and (R) are true and (R) is the correct explanation.of (A)
Both (A) and (R) are true but (R) does not explain (A)
(A) is true but (R) is false
Both (A) and (R) are false

Primary amine acts as

Electrophile
Lewis base
Lewis acid
Free radical

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