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11th Chemistry Weekly Test - 3 ( Haloalkanes and Haloarenes )

MABS Institution

11th Chemistry Weekly Test - 3 ( Haloalkanes and Haloarenes )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

acetone \(\overset { i){ CH }_{ 3 }Mgl }{ \underset { ii){ H }_{ 2 }O/{ H }^{ -1 } }{ \longrightarrow } } X,\) X is

2-propanol
2-methyl-2-propanol
1-propanol
acetonol

Which of the following compounds will give racemic mixture on nucleophilic substitution by OH- ion?

(i)
(ii) and (iii)
(iii)
(i) and (ii)

Which of the following is secondary alkyl halide?

Iso butyl chloride
Isopentyl chloride
Neopentyl chloride
Isopropyl chloride

Which one of the following is used to test primary amines?

Schiff's test
Carbylamine test
Dye test
Silver mirror test

Match the list I with list II and select the correct answer using the code given below the lists

List-I List-II

A Chloromycetin 1 Malaria

B Thyroxine 2 Typhoid Fever

C Chloroquine 3 Anaesthetic

D Halothane 4 Goitre

A B C D

1 2 3 4
A B C D

3 1 4 2
A B C D

2 3 1 4
A B C D

4 2 3 1

Which one of the following reacts with CH₃MgI followed by hydrolysis to yield tert. butyl alchol?

CH₃CHO
HCHO
CH₃COOC₂H₅
CH₃COCH

.CH₃ - CH = CH₂\(\overset { HBr }{ \underset { peroxide }{ \longrightarrow } } \)? The above reaction undergoes

Electrophilic substitution
Nucleophilic substitution
Markovnikov's addition
Anti-Markovnikov's addition

The name of C₂F₄Cl₂ is ___________

Freon – 112
Freon – 113
Freon – 114
Freon – 115

Which one of the following reacts with CH3MgI followed by hydrolysis and gives isopropyl alcohol?

CH₃COCHO₃
CH₃CHO
HCHO
CNCl

Which of the following pair functional groups represents ambident nucleophiles?

-SH & - OH
CN & -NO₂
-Br & -Cl
-O- &-CHO

With respect to the position of – Cl in the compound CH₃ – CH = CH – CH₂ – Cl, it is classified as

Vinyl
Allyl
Secondary
Aralkyl

Assertion: In mono haloarenes, electrophilic substitution occurs at ortho and para positions.
Reason: Halogen atom is a ring deactivator.

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false

\({ CH }_{ 3 }-{ CH }_{ 3 }-Br\overset { KCN }{ \longrightarrow } X\overset { dil.HCl }{ \underset { \triangle }{ \longrightarrow } } Z\) Z is

CH₃CH₂COOH
CH₃COOH
CH₃COCI
CH3CONH2

Which one of the following reacts with CH₃MgI followed by acid hydrolysis to yield acetic acid?

CNCI
CH₃COOC₂H₅
HCOOC₂H₅
CO₂

___________is used in fire extinguishers

CCl₂ = CCl₂
CHCl = CCl₂
CH₂ = CCl₂
CCl₄

How many isomers are possible for the formula C₄H₉Cl?

3
2
4
5

Arrange the following compounds in increasing order of their density
A) CCl₄
B) CHCl₃
C) CH₂Cl₂
D) CH₃Cl

D < C < B < A
C > B > A > D
A < B < C < D
C > A > B > D

Match the compounds given in Column I with suitable items given in Column II

Column I
(Compound) Column II
(Uses)

A. Iodoform 1. Fire extinguisher

B. Carbontetra chloride 2. Insecticide

C. CFC 3. Antiseptic

D. DDT 4. Refrigerants

A → 2 B → 4 C →1 D →3
A → 3 B → 2 C → 4 D → 1
A → 1 B → 2 C →3 D → 4
A → 3 B → 1 C →4 D → 2

________________is used in the treatment of goitre

Halothane
Benzoquinone
Chloromycetin
Thyroxine

The reactivity of alcohols with haloacid is _________.

3° > 2° > 1°
1° > 2° > 3°
2° > 3° > 1°
3° > 1° > 2°

In the reaction X is ________.

The treatment of ethyl formate with excess of RMgX gives

\(R-\underset { \overset { || }{ O } }{ C } -R\)
\(R-\underset { \overset { | }{ OH } }{ CH } \quad R\)
R- CHO
R- O- R

Which of the following reagent is helpful to differentiate ethylene dichloride and ethylidene chloride?

Zn / methanol
KOH / ethanol
aqueous KOH
ZnCl₂ / Con HCl

Identify the compound possessing highest boiling point.

1 - Chloropentance
2 - Chloropentane
3 - Chloropentance
Tetra chloromethane

The IUPAC name for CH₃-C - CH - CH₃ CH₃ CI CH₃

2-Bromo-3-chloro-2,4-dimethyl pentane
3-Bromo':'2-chloro-2,4-dimethyl pentane
2-Bromo-3-chloro-2,4-dimethyl propane
None of the above

The IUPAC name of is

2-Bromo pent – 3 – ene
4-Bromo pent – 2 – ene
2-Bromo pent – 4 – ene
4-Bromo pent – 1 – ene

Which one of the following compounds does not undergo nucleophilic substitution reactions at all?

Ethyl bromide
Vinyl chloride
Benzyl chloride
Isopropyl chloride

Markovnikov's rule is followed for the addition of HCI to_______________.

symmetrical alkene
unsymmetrical alkene
symmetrical alkane
unsymmetrical alkane

The major products obtained when chlorobenzene is nitrated with HNO₃ and con H₂SO₄.

1-chloro-4-nitrobenzene
1-chloro-2-nitrobenzene
1-chloro-3-nitrobenzene
1-chloro-1-nitrobenzene

Freon-12 is manufactured from tetrachloro methane by

Wurtz reaction
Swarts reaction
Haloform reaction
Gattermann reaction

When alkyl halides are heated with dry Ag₂O, they give

diethyl ether
ester
ketone
aldehyde

Which ofthe following halogen exchange reaction will occur in acetone?

R-I +NaCI
R-F + KCI
R-CI +NaI
R- F +AgBrv

The order of stability of the carbonium ion is__________.

1°> 2°>3°
2°> 3°>1°
2°> 1°>3°
3°>2°>1^o

The______________readily undergoes addition reaction with HBr.

(CH₃)₂ C = CH₂
CI- CH = CH - CI
CH₂ = CH - CI
CH3 - CH = CH₂

u200bu200bu200bu200bu200bu200bu200bIdentify the correct order of boiling point of halo alkanes?

CH₃-CH₂-CH₂-CH₂CI>(CH₃)₃C-CI > CH₃-CH₂-\(\underset { \overset { | }{ Cl } }{ CH } \)-CH₃
CH₃-CH₂-CH₂-CH₂CI>CH₃-CH₂-\(\underset { \overset { | }{ Cl } }{ CH } \)-CH₃< (CH₃)₃C-CI

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