Home/ECAT/ECAT Chemistry Alkyl Halides Test Online

ECAT Chemistry Alkyl Halides Test Online

Mustansar KhanLast Updated: April 19, 2025

Chemistry Alkyl Halides MCQS Online Test

ECAT Chemistry Alkyl Halides Chapter Online Test

Total Questions:	61
Time Allowed:	30 Minutes
Total Marks:	61
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	ECAT Entry Test Chemistry Online Test Interview Questions about Chemisttry All Universities Entrance Test Recruitments Tests

ECAT Chemistry Alkyl Halides Test

Please wait...

Page 1 of 3

Chemistry

1. The reaction of alcohol with SOCl₂ in the presence of pyridine as catalyst gives

Benzene

Acids

Acid chloride

Alkyl halide

2. When ethyl iodide ad n-propyl iodide are allowed to react with sodium metal in ether, the number of alkanes that could be produced is

Three alkanes

Only one

Two alkanes

Four alkanes

3. In SN₁ mechanism the product has a configuration

50% inversion and 50% retention

May be inverted or not

Not inverted

100% inversion

4. When CO₂ is made to react with ethyl magnesium bromide followed by and hydrolysis the product formed is

Ethanoic acid

Propanoic acid

Propane

Propanol

5. A leaving group is a

Electrophile

Neucleophile

Positively charged

May have positive or negative charge

6. Coenzymes are the species which increases the activity of enzymes. They are chemically

Non – metals

Organic acids

Metal ions

Organic bases

7. Bond energy order of C-X bond is

C – Cl > C – Br > C – I > C – C

C – I > C – Br > C – CI > C – F

None of these

C – F > C – Cl > C – Br > C – l

8. Which of the following reacts with chloroform and base to form phenyl isocyanide?

Phenol

Aniline

Nitrobenzene

Chlorobenzene

9. Ethyl bromide reacts with sodium to produce

Ethane

Butane

None of these

Ethyl sodium

10. C – X bond is strong in:

CH₃F

CH₃Cl

CH₃I

CH₃Br

11. In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to

Two carbon atoms

One or no carbon atom

Three carbon atoms

Only one carbon atom

12. A molecule of polysaccharide on hydrolysis produces __________ molecules of monosacharides

100

2 – 10

Many

Few

13. Iodine number of an oil indicates its

Purity

Molecular weight

Degree of unsaturation

Acidic strength

14. The reaction between primary amine, chloroform and alcoholic caustic potash is called

Cannizzaro’s reaction

Frankland reaction

Carbylamine reaction

Wurtz reaction

15. As ester is prepared by

Aldehyde and alcohol

Carboxylic acid and alcohol

Two alcohols

Ketone and alcohol

16. Which of the following does not give iodoform test?

Benzophenone

Acetophenone

Ethanol

Ethanal

17. Ketones react with G.R to produce

3° alcohol

1° alcohol

Carboxylic acid

2° alcohol

18. Electrophile is

Proton donor

Electron donor

Electron deficient

Electron rich

19. Grignard reagent is reactive due to?

The presence of Mg atom

None of these

The polarity of C-Mg bond

The presence of halogen atom

20. Rancidfication of fats and oils is due to

Hydrolysis reaction

Hydrogenation reaction

Oxidation reaction

Both a and b

21. The reaction of 4-bromobenzyl chloride with NaCN in ethanol leads to

4-Cyanobenzyle cyanide

4-Bromobenzyl cyanide

4-Cyanobenzyl chloride

4-Bromo 2-cyanobenzyl chloride

22. Monohalo derivatives of alkanes are called

Imide

Alkyl halide

Alkenes

Amides

23. Halogens on treating with silver salts of acids give

Alcohols

Phenol

Esters

Alkyl halide

24. The final product formed by distilling ethyl alcohol with excess of Cl₂ and Ca(OH)₂ is

CCl₃CHO

CHCl₃

(CH₃)₂O

CH₃CHO

25. Which of the following compounds on oxidation gives benzoic acid?

Chlorobenzene

Chlorotoluene

Benzyl chloride

Chlorophenol

Page 2 of 3

26. SN₂ reaction is a

Any order

First order reaction

3rd order reaction

2nd order reaction

27. The chloroform reacts with NaOH to give

Sodium oxalate

HCOONa

CH₃OH

CH₃COONa

28. SN² is a

Two step mechanism

Single step mechanism

Unimolecular

Any one

29. Which one of the following molecules does not form alcohol when reacts with Grignard reagent?

Formaldehyde

Propanone

Carbon dioxide

Acetaldehyde

30. The optimum pH value for the enzymes “pepsin” is:

1.4

31. Which of the following with aqueous KOH will give acetaldehyde?

1, 1-Dichloroethane

1, 2-Dichloroethane

Ethyl chloride

Chloroacetic acid

32. The most reactive compound for electrophilic nitration will be

Nitrobenzene

Chlorobenzene

Benzoic acid

Benzyl chloride

33. In SN reaction the substrate is

Nucleophile

An alcohol

Alkyl halide

Electrophite

34. Replacement of Cl of Chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-Dinitrochlorobenzene is readily replaced because

NO₂ makes the electron rich ring at ortho and para positions

NO₂ withdraws electrons at metaposition

NO₂ withdraws electrons at ortho and para positions

NO₂ donate electrons at m-position

35. Iodoethane reacts with sodium in ether, the product formed is

Butane

Propyne

Butene

Pentene

36. Cl₂ reacts with CS₂ in presence of AlCl₃ to form

CHCl₃

C₂H₆

C₂H₅Cl

CCl₄

37. Elimination bimolecular reaction involves

Third order kinetics

Second order kinetics

Zero order kinetics

First order kinetics

38. The rate of E₁ reaction depends upon

Concentration of substrate

The concentration of substrate as well as nucleophile

None of these

The concentration of nucleophile

39. Rate = K [Alkyl halide]¹ [nucleophile]¹ this is a rate expression for

E₁ mechanism

SN₂ mechanism

None of these

SN₁ mechanism

40. Benzene hexachloride is used as

Insecticide

Antimalerial drug

Dye

Antibiotic

41. Keratomalacia is caused due to the deficiency of vitamin

42. Which one is least electronegative?

43. Aniline is a derivative of

Alkane

Aromatic hydrocarbon

Alicyclic

Alkene

44. Reaction of ethylamine with chloroform in alcoholic KOH produces

CH₃OH

CH₃NC

C₂H₅CN

C₂H₅NC

45. SN₂ reaction can be best carried out with

All of these

3° alkyl halide

1° alkyl halide

2° alkyl halide

46. What happens when CCl₄ is treated with AgNO₃ solution?

A white ppt. of AgCl will form

NO₂ will be evolved

CCl₄ will dissolve in AgNO₃ solution

Nothing will happen

47. In primary alkyl halides halogen atom is attached with that carbon which is further attached with how many carbons

Two

Four

One

Three

48. Which of the following compounds gives trichloromethane on distilling with bleaching power?

Phenol

Methanol

Methanal

Ethanol

49. Methanol reaction with G.R to produce

3° alcohol

Carboxylic acid

1° alcohol

2° alcohol

50. Which of the following reagent cannot be used for preparing alkyl chloride from alcohol?

PCl₂

HCl + anhyd. ZnCl₂

SOCl₂

NaCl

Page 3 of 3

51. For the carbylamine reaction we need hot alc. KOH and

Any amin and chloroform

A primary amine and chloroform

A mono alkyl amine and trichloro-methane

Chloroform and Ag powder

52. Alkyl halides on treatment with metallic Na give

Alkynes

Alkenes

Aldehyde

Alkynes

53. The fat soluble vitamins are

A and D

C and D

A and B

B and C

54. Ethyl chloride on treatment with aqueous alkali gives

Ethene

Ethane

Ethanal

Ethanol

55. DDT is formed from

Choral and Chlorobenzene

Chlorobenzene and chlorine

Chloral and Benzene

Benzene and Chlorobenzene

56. For which mechanism, the first step involved is the same

W₁ and E₂

E₁ and E₂

E₁ and SN₁

E₂ and SN₂

57. The reaction of excess Grignard reagent with an ester of formic acid, HCO₂R, gives:

A tertiary alcohol

A secondary alcohol

A primary alcohol

Methano

58. When alkyl halides are heated with aqueous solution of ammonia at about 100°C, amines are formed, This reaction is known as

Clemensen reaction

Wurtz reaction

Hoffmans reaction

Williamson’s synthesis

59. The alkyl halide is converted into an alcohol by

Elimination

Substitution

Dehydrohalogenation

Addition

60. Aryl halides are less reactive towards nucleophile substitution reactions as compared to alkyl halides due to

Resonance stabilization

The formation of less stable carbonium ion

The inductive effect

Larger carbon – halogen bond

61. The rate of E₁ reaction depends upon

None of these

The concentration of substrate as well as nucleophile

The concentration of substrate

The concentration of nucleophile

You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.

UET Peshawar Entry Test 2025 Registration Online ETEA Test D...
ECAT Statistics Test Set 17
ECAT Statistics Test Set 16
ECAT Statistics Test Set 15
ECAT Statistics Test Set 14
ECAT Statistics Test Set 13
ECAT Statistics Test Set 12
ECAT Statistics Test Set 11
ECAT Statistics Test Set 10
ECAT Statistics Test Set 9

Mustansar KhanLast Updated: April 19, 2025

Facebook Twitter Reddit WhatsApp Share via Email Print

ECAT Chemistry Alkyl Halides Test Online

Chemistry Alkyl Halides MCQS Online Test

ECAT Chemistry Alkyl Halides Chapter Online Test

ECAT Chemistry Alkyl Halides Test

Chemistry

You Might Also Like

Mustansar Khan

Leave a Reply Cancel reply

Chemistry Alkyl Halides MCQS Online Test

ECAT Chemistry Alkyl Halides Chapter Online Test

ECAT Chemistry Alkyl Halides Test

Chemistry

You Might Also Like

Mustansar Khan

Your Related

ECAT Computer File Handling in “C” Test Online

ECAT Computer Science Table and Query Test Online

ECAT Physics Alternating Current Test Online

ECAT Mathematics Introduction to Analytic Geometry Online Test

Mehran University Sindh ECAT English Entry Test Online Preparation

ECAT English Sentence Completion Online Test

Leave a Reply Cancel reply