Home/ECAT/ECAT Chemistry Aliphatic Hydrocarbons Test Online

ECAT Chemistry Aliphatic Hydrocarbons Test Online

Mustansar KhanLast Updated: April 19, 2025

Chemistry Aliphatic Hydrocarbons MCQS Online Test

ECAT Chemistry Aliphatic Hydrocarbons Chapter Online Test

Total Questions:	64
Time Allowed:	30 Minutes
Total Marks:	64
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 Aliphatic Hydrocarbons Test

Page 1 of 3

Chemistry

1. When HBr is added to ethyne the product would be

Bromoethane

1-dibromocthene

1, 2 dibromoethane

Vinyl beromide

2. When HBr is added to 1-butene what would be the product

2-bromobuten

Cannot be predicted

Bromo butane

Bromu butane

3. When X₂ reacts with alkenes in the presence of water as a solvent, the ultimate product is

Any product

Bromonium ion

Vicinal dihalide

Halohydrin

4. Which is used for artificial ripening of fruit?

Ethene

Ethyne

Methane

Ethane

5. Which is the composition of Lindler’s Catalyst

Pd and CO₂

Pd(BaSO₄) poison with Quinoline

Pd + SO₂

Pd deactivated with sulphur compound

6. Marsh gas was the name given to

Propane

Ethane

Methane

Butane

7. The hydrocarbon in which all the four valencies of carbon atoms are fully utilized are called ___________

None of these

Alkanes

Alkynes

Alkenes

8. Ethylene hydrogen sulphate is obtained by reaction of H₂SO₄ with?

Ethylene

Ethanol

Ethyl chloride

Ethane

9. Vicinal dihalides on treatment with zinc dust gives

Alkanes

Alkenes

Alkynes

All above

10. A salt producing hydrocarbon among these compounds is

Ethane

Ethyne

Ethene

Methane

11. Reactivity due to pi-electrons is present in

Alkane

Alkyne

Both b & c

Alkene

12. Which of the following will be acidic

1-butyne

All of these

Propyne

Ethyne

13. Ethene is slightly ________ in taste

Sweet

Tasteless

Bitter

None of these

14. Paraffins are also called

Alkynes

Alkenes

None of these

Alkanes

15. When acetylene is passed through a copper tube at 300°C, it polymerizes to:

None of these

Polyacetylene

Polyethylene

Benzene

16. Which of the following method is most appropriate for the manufacture of methane?

Liquification of natural gas

Wurtz reaction

None of these

By reduction of CH2CL2

17. Which of the following all contain a carbonyl group?

Aldehydes, ketones, amines

Carboxylic acids, aldehydes, ketones

Alcohols, carboxylic acids, ethers

Alkanes, alkenes, alkynes

18. Alkyl halides undergo dehydrohalogenation by reaction with

KOHaq

KOHalc

Al₂O₃

19. Which of the following substances is used as an antiknock compound?

Ethyl acetate

Tetraethyl lead

Lead acetate

Lead tetrachloride

20. Alkenes and alkynes are

Unsaturated aliphatic hydrocarbons

Saturated aliphatic hydrocarbons

None of these

Unsaturated aromatic hydrocarbons

21. Acetylene is used in the manufacture of

Plastic

All above

Ethyl alcohol

Rubber

22. The order of reactivity of halogens in aliphatic substitution reactions is

F2 > Br2 > Cl2

Br2 > Cl2 > F2

Cl2 > Br2 > F2

Cl2 > Cl2 > Br2

23. Vinyl acetylene combines with HCl to form

Polyacetylene

Benzene

Chloroprene

Divinylacetylene

24. Which of the following hydrocarbons is liquid at room temperature?

Hexane

Butane

Ethene

Ethane

25. A fuel has the same knocking property as a mixture of 70 isooctane (2, 2, 4-trimethyl pentane) and 30% n-heptane by volume the octane number of the fuel is

100

Page 2 of 3

26. When one hydrogen atom of alkane is removed then it is called

Alkyl

Saturated hydrocarbon

Aldehyde

Alkene

27. Octane number is zero for

n-Heptane

n-Hexane

Isooctane

Isoheptane

28. The reaction

is known as

Kolb’s reaction

Sabalier’s Senderen reaction

Wolf Kishner reaction

Wurt’z reaction

29. When water is added to ethylene what would be the product

Acetaldehyde

Vinyl alcohol

Acetone

Formaldehyde

30. Alkenes ________ the colour of basic solution of KMnO4.

Charge

None of these

Discharged

Nil

31. “Each different compound should have a different name” was published by IUPAC system of nomenclature in

1979

1947

1830

1892

32. The process in which orbitals of different energies and shapes mix with each other to give equivalent hybrid orbitals is called

Isomerization

Polymerization

Hybridization

None of these

33. Which of the following is Bayer’s reagent

aqBr₂ water

Alkaline KMnO₄

Acidic KMnO₄

Neutral permanganate

34. When acetylene is passed through a copper but at 300°C, it polymerizes to:

None of these

Polyacetylene

Polyethylene

Benzene

35. Ethylene is a __________ molecule

Nil

Polar

Nonpolar

None of these

36. Which reaction is used as test for the presence of alkenes?

Polymerization

Combustion

Catalytic hydrogenation

Reaction of Cold dilute alkaline KMnO₄

37. General formula of alkyne is

CnH2n + 2

CnH2n – 2

CnH2n + 2

CnH2n

38. Alkanes are also known as

Saturated hydrocarbon

Paraffins

Unsaturated hydrocarbon

Both a and c

39. How can you prepare methane from carboxylic acid

Kolp’s electrolytic method

It is possible with all of the above

By grignard’s reagent

By decarbxylic of monocarboxylic acid

40. Alkenes combines readily with electrophilic reagents such as halogens

Gem dihalides

Vinyl halide

Vicinal dihalides

Haloalkanes

41. Alkyl halides when reduced with nascent hydrogen in the presence of Zn + HCl, are converted to

Alkenes

Alkynes

Alcohol

Alkanes

42. Hydrocarbon which is liquid at room temperature is:

Pentane

Ethane

Propane

Butane

43. Ethylene polymerizes at 100 atm pressure at 400°C give

Polyalcohol

Polypropylene

Polyethylene

Polylienzene

44. Which of the following is the most reactive

Ethyne

Benzene

Ethene

Ethane

45. Kolb’s electrolysis of sod. Salt of butanoic acid gives

Isobutene

Butane

Ethylene

n-haxane

46. Which one of the following reagent distinguishing ethylene from acetylene?

Cl₂ dissolved in CCl₄

Ammonical Cu₂Cl₂

Aqueous alkaline KMnO₄

Conc. H₂SO₄

47. Hydrogenolysis results in the formation of

Alkane

Alkene

Aldehydes

Alkyne

48. When H₂SO₄ is heated with excess of ethanol at 140°C, the major product is

Ether

Ketone

Alcohol

Ethane

49. To what Organic Family does the following molecule belong? CH₂=CH–CH₃

Carboxylic acid

Alkyne

Alcohol

Alkene

50. Hydrogenation of alkenes/alkynes in the presence of Ni as catalyst at 300°C results in the formation of corresponding alkanes. This reaction is known as

Sabatier – Sendrens reaction

Haloform reaction

Kolbes reaction

Cannizaro’s reaction

Page 3 of 3

51. The elimination of HX from adjacent carbon atoms is called

Halogenation

Dehydrohalogenation

Hydrohalogenation

Hydration

52. What test can be used to test presence of unsaturation is alkenes?

Baeyer’s reagent

Lindler’s reagent

Siemen’s reagent

Stadler’s reagent

53. The reaction/method that does not give an alkane is

Dehydrohalogenation of an alkyl halide

Hydrolysis of alkyl magnesium bromide

Catalytic hydrogenation of alkanes

Wurtz reaction

54. A compound of carbons and hydrogen used in welding is

CH₄

C₂H₄

C₂H₂

C₂H₆

55. When ethane is passed through a dilute solution of KMnO₄, the pink colour changes to

Red

Blue

Colourless

Green

56. Acetylene gives

White ppt. with both

White ppt. with ammonical AgNO3 and red ppt. with ammonical Cu(NO3)2

White ppt. with ammonical AgNo3 and red ppt. with ammonical Cu2Cl2

Red ppt. with both

57. Acetylene on reacting with ammonical silver nitrate gives

Silver mirror

Silver acetylide

Silver acetate

Silver metal

58. Calcium carbide reacts with water to produce

None of above

Nil

Acetylene

Ethane

59. Mustard gas has a formula

S (CH₂)₂ Cl₂

S (CH₃)₃ Cl₂

S (CH₂)₄ Cl₂

S (CH₂)₃Cl

60. Alkanes containing a methyl group on main chain at 2nd carbon are called

neo-alkane

iso-alkane

branched-alkane

normal-alkane

61. Metallic ethynides are formed by the reaction of ___________ with ammonical silver nitrate or ammonical cuprous chloride

Ethene

Benzene

Acetylene

Ethanoic acid

62. Alkenes are produced from dehalogenation of

Trihalo alkane

Vicinal dihalo alkane

Vicinal trihalo alkane

Dihalo alkane

63. Which of the following Compounds will form a hydrocarbon on reaction with Grignard’s reagent?

CH₃COOCH₃

CH₃CH₂CH

CH₃CHO

CH₃COCH₃

64. Ethylene combines with water in the presence of H₂SO₄ + HgSO₄ and forms

Ethyl alcohol

Ethyl chloride

Carboxylic acid

None of these

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

ECAT Chemistry Environmental Chemistry Test Online
ECAT Chemistry Common Chemical Industries in Pakistan Test O...
ECAT Chemistry Macro-Molecules Test Online
ECAT Chemistry Carboxylic Acid Test Online
ECAT Chemistry Aldehydes and Ketones Test Online
ECAT Chemistry Alcohols Phenols And Ethers Test Online
ECAT Chemistry Alkyl Halides Test Online
ECAT Chemistry Aromatic Hydrocarbons Test Online
ECAT Chemistry Fundamental Principles of Organic Chemistry T...
ECAT Chemistry Transition Elements Test Online

Mustansar KhanLast Updated: April 19, 2025

Facebook Twitter Reddit WhatsApp Share via Email Print

ECAT Chemistry Aliphatic Hydrocarbons Test Online

Chemistry Aliphatic Hydrocarbons MCQS Online Test

ECAT Chemistry Aliphatic Hydrocarbons Chapter Online Test

ECAT Chemistry Aliphatic Hydrocarbons Test

Chemistry

You Might Also Like

Mustansar Khan

Leave a Reply Cancel reply

Chemistry Aliphatic Hydrocarbons MCQS Online Test

ECAT Chemistry Aliphatic Hydrocarbons Chapter Online Test

ECAT Chemistry Aliphatic Hydrocarbons Test

Chemistry

You Might Also Like

Mustansar Khan

Your Related

NUST Rawalpindi ECAT Chemistry Entry Test Preparation Online

ECAT Mathematics Trigonometric Identities Online Test

ECAT Mathematics Introduction to Analytic Geometry Online Test

ECAT Mathematics Vectors Chapter Online Test

UET Lahore, Taxila ECAT Statistics Entry Test Online Preparation

NED-Karachi ECAT Physics Entry Test Online Preparation

Leave a Reply Cancel reply