Chemistry Alkyl Halides Online Mcqs Test

Q: How can I prepare for Chemistry Alkyl Halides Online Mcqs Test?

You can prepare for Chemistry Alkyl Halides Online Mcqs Test by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. In SN1 reactions, the rate of reaction depends on:

Answer

Temperature only

Answer

Concentration of alkyl halide only

Answer

Concentration of nucleophile only

Answer

Both nucleophile and alkyl halide

Question 2

2. What is the molecular geometry of carbon in alkyl halides?

Answer

Trigonal planar

Answer

Trigonal bipyramidal

Answer

Tetrahedral

Question 3

3. Which reaction involves the complete removal of a halide ion and formation of an alkene?

Question 4

4. Which of the following halides is most likely to undergo an E2 reaction?

Answer

Methyl chloride

Answer

Secondary fluoride

Answer

Tertiary bromide

Answer

Primary chloride

Question 5

5. Why is fluoride a poor leaving group?

Answer

It is too reactive

Answer

It is neutral

Answer

It forms strong C–F bonds

Answer

It is unstable

Question 6

6. In an SN2 reaction, what happens to the stereochemistry of the carbon center?

Answer

Rearranged

Question 7

7. Which alkyl halide is least reactive in SN2 reactions?

Answer

Isopropyl chloride

Answer

Methyl iodide

Answer

Tert-butyl bromide

Answer

Ethyl bromide

Question 8

8. Which product is formed when 2-bromopentane reacts with NaOH under heat?

Answer

2-pentanol

Answer

Pentanoic acid

Question 9

9. Which type of alkyl halide is most reactive in SN1 reactions?

Question 10

10. Which product is formed in an E1 reaction from 2-butanol in acidic conditions?

Answer

Butanoic acid

Question 11

11. In E2 reactions, how many molecules are involved in the rate-determining step?

Question 12

12. Which of the following best describes the SN1 reaction mechanism?

Answer

Concerted elimination

Answer

Two-step with carbocation intermediate

Answer

One-step with inversion

Answer

Radical chain reaction

Question 13

13. Which of the following favors E2 over E1?

Answer

Strong base and heat

Answer

Polar protic solvent

Answer

Low temperature

Question 14

14. Which of the following is a secondary alkyl halide?

Answer

CH₃CH₂Cl

Answer

CH₃CHClCH₃

Answer

(CH₃)₃CCl

Question 15

15. In SN1 reactions, the rate of reaction depends on:

Answer

Both nucleophile and alkyl halide

Answer

Concentration of alkyl halide only

Answer

Concentration of nucleophile only

Answer

Temperature only

Question 16

16. Which mechanism is favored by tertiary halides in basic alcoholic medium?

Question 17

17. What is the leaving group in an alkyl halide reaction?

Answer

Alkyl group

Answer

Nucleophile

Answer

Halogen atom

Question 18

18. Which of the following describes Zaitsev's Rule?

Answer

The more substituted alkene is the major product

Answer

The least substituted product is formed

Answer

The halide leaves first

Answer

The most stable carbocation forms first

Question 19

19. Which factor increases the rate of SN1 reactions?

Answer

Polar protic solvent

Answer

Strong nucleophile

Answer

Polar aprotic solvent

Question 20

20. Which statement is true about E1 reactions?

Answer

One-step process

Answer

Occurs with strong bases only

Answer

Needs non-polar solvent

Answer

Carbocation intermediate is formed

Question 21

21. Which type of alkyl halide is most reactive in SN1 reactions?

Question 22

22. Which halogen is the most reactive in alkyl halides?

Question 23

23. Which of the following solvents favors SN2 reactions?

Answer

Acetic acid

Question 24

24. Which of the following is the correct IUPAC name for CH₃CH₂CH₂Cl?

Answer

Isopropyl chloride

Answer

Propyl chloride

Answer

1-chloropropane

Answer

2-chloropropane

Question 25

25. Which of the following solvents favors SN2 reactions?

Answer

Acetic acid

Question 26

26. Which is a characteristic of SN2 mechanism?

Answer

Inversion of configuration

Answer

Rearrangement possible

Answer

Carbocation intermediate

Answer

First-order kinetics

Question 27

27. Which of the following describes Zaitsev's Rule?

Answer

The more substituted alkene is the major product

Answer

The most stable carbocation forms first

Answer

The halide leaves first

Answer

The least substituted product is formed

Question 28

28. Which base is typically used in E2 reactions?

Question 29

29. Which type of solvent is preferred in SN1 reactions?

Answer

Polar aprotic

Answer

Polar protic

Question 30

30. Which of the following is a good leaving group?

Question 31

31. In an SN2 reaction, what happens to the stereochemistry of the carbon center?

Answer

Rearranged

Question 32

32. Which reaction involves the complete removal of a halide ion and formation of an alkene?

Question 33

33. Which base is typically used in E2 reactions?

Question 34

34. Which of the following halides will undergo SN1 reaction the fastest?

Answer

Isopropyl iodide

Answer

Tert-butyl bromide

Answer

Ethyl bromide

Answer

Methyl chloride

Question 35

35. Which of the following is the correct IUPAC name for (CH₃)₃CBr?

Answer

2-bromo-2-methylpropane

Answer

Tert-butyl bromide

Answer

2-bromobutane

Answer

1-bromobutane

Question 36

36. Which of the following will undergo racemization in SN1 reaction?

Answer

2-chloro-2-methylpropane

Answer

Methyl chloride

Answer

2-bromobutane

Answer

1-bromobutane

Question 37

37. Which of the following halides will undergo SN1 reaction the fastest?

Answer

Ethyl bromide

Answer

Methyl chloride

Answer

Isopropyl iodide

Answer

Tert-butyl bromide

Question 38

38. Which alkyl halide is least reactive in SN2 reactions?

Answer

Isopropyl chloride

Answer

Ethyl bromide

Answer

Methyl iodide

Answer

Tert-butyl bromide

Question 39

39. Which reaction mechanism involves two molecules in the rate-determining step?

Question 40

40. Which alkyl halide undergoes SN2 reaction most readily?

Answer

Isopropyl chloride

Answer

Methyl chloride

Answer

Ethyl chloride

Answer

Tert-butyl chloride

Question 41

41. Which of the following is a secondary alkyl halide?

Answer

(CH₃)₃CCl

Answer

CH₃CHClCH₃

Answer

CH₃CH₂Cl

Question 42

42. What is the hybridization of the carbon atom bonded to the halogen in alkyl halides?

Question 43

43. In SN2 reactions, the nucleophile attacks the substrate from the:

Answer

Front side

Question 44

44. What is the hybridization of the carbon atom bonded to the halogen in alkyl halides?

Question 45

45. Which type of substitution occurs with inversion of configuration?

Question 46

46. Which halogen is the most reactive in alkyl halides?

Question 47

47. Which condition favors SN2 over SN1?

Answer

Weak nucleophile

Answer

Tertiary alkyl halide

Answer

Strong nucleophile and primary alkyl halide

Answer

Polar protic solvent

Question 48

48. Which type of solvent is preferred in SN1 reactions?

Answer

Polar protic

Answer

Polar aprotic

Question 49

49. Which of the following halides is most likely to undergo an E2 reaction?

Answer

Secondary fluoride

Answer

Tertiary bromide

Answer

Methyl chloride

Answer

Primary chloride

Question 50

50. In an E2 reaction, the base removes:

Answer

A β-hydrogen

Answer

A hydrogen on the same carbon

Answer

The halogen

Answer

A methyl group

Question 51

51. Which product is expected when 2-chlorobutane undergoes SN2 with NaOH?

Answer

Butanoic acid

Question 52

52. Which type of substitution occurs with inversion of configuration?

Question 53

53. In SN2 reactions, the nucleophile attacks the substrate from the:

Answer

Front side

Question 54

54. The stability of carbocations follows the order:

Answer

Tertiary > Secondary > Primary

Answer

Methyl > Tertiary > Secondary

Answer

Secondary > Tertiary > Primary

Answer

Primary > Secondary > Tertiary

Question 55

55. What is the general formula for alkyl halides?

Question 56

56. Which reaction mechanism involves two molecules in the rate-determining step?

Question 57

57. Which of the following is a good leaving group?

Question 58

58. Which condition favors SN2 over SN1?

Answer

Tertiary alkyl halide

Answer

Weak nucleophile

Answer

Strong nucleophile and primary alkyl halide

Answer

Polar protic solvent

Question 59

59. Which product is expected when 2-chlorobutane undergoes SN2 with NaOH?

Answer

Butanoic acid

Question 60

60. Which mechanism is favored by tertiary halides in basic alcoholic medium?

Question 61

61. What is the molecular geometry of carbon in alkyl halides?

Answer

Tetrahedral

Answer

Trigonal bipyramidal

Answer

Trigonal planar

Question 62

62. Which condition favors elimination over substitution?

Answer

Strong base and heat

Answer

Cold temperature

Answer

Nonpolar solvent

Question 63

63. Which statement is true about E1 reactions?

Answer

Carbocation intermediate is formed

Answer

One-step process

Answer

Occurs with strong bases only

Answer

Needs non-polar solvent

Question 64

64. In E2 reactions, how many molecules are involved in the rate-determining step?

Answer 132

It is neutral

Answer 133

It is too reactive

Answer 134

It is unstable

Answer 135

It forms strong C–F bonds

Answer 136

2-bromobutane

Answer 137

Methyl chloride

Answer 138

2-chloro-2-methylpropane

Answer 139

1-bromobutane

Answer 140

Polar aprotic solvent

Answer 141

Polar protic solvent

Answer 142

Strong nucleophile

Answer 143

2-pentanol

Answer 144

Pentanoic acid

Answer 145

Alkyl group

Answer 146

Halogen atom

Answer 147

Nucleophile

Answer 148

Acid hydrolysis

Answer 149

1-bromobutane

Answer 150

2-bromobutane

Answer 151

Tert-butyl bromide

Answer 152

2-bromo-2-methylpropane

Answer 153

Rearrangement

Answer 154

Backside attack

Answer 155

One-step reaction

Answer 156

Propyl chloride

Answer 157

2-chloropropane

Answer 158

Isopropyl chloride

Answer 159

1-chloropropane

Answer 160

Butanoic acid

Answer 161

A β-hydrogen

Answer 162

A hydrogen on the same carbon

Answer 163

The halogen

Answer 164

A methyl group

Answer 165

One-step reaction

Answer 166

Backside attack

Answer 167

Rearrangement

Answer 168

Ethyl chloride

Answer 169

Tert-butyl chloride

Answer 170

Isopropyl chloride

Answer 171

Methyl chloride

Answer 172

Rearrangement possible

Answer 173

First-order kinetics

Answer 174

Carbocation intermediate

Answer 175

Inversion of configuration

Answer 176

One-step with inversion

Answer 177

Radical chain reaction

Answer 178

Two-step with carbocation intermediate

Answer 179

Concerted elimination

Answer 180

Low temperature

Answer 181

Strong base and heat

Answer 182

Polar protic solvent

Answer 183

Methyl > Tertiary > Secondary

Answer 184

Tertiary > Secondary > Primary

Answer 185

Primary > Secondary > Tertiary

Answer 186

Secondary > Tertiary > Primary

Answer 187

Acid hydrolysis

Answer 188

Strong base and heat

Answer 189

Cold temperature

Answer 190

Nonpolar solvent

Total Questions:	84
Time Allowed:	40 Minutes
Total Marks:	84
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	Chemistry Test ECAT Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Chemistry Interview Question Answer

Chemistry Alkyl Halides Online Mcqs Test

Important Chemistry Alkyl Halides Question and Answer

Chemistry Alkyl Halides Practice Test Online With Explanation

Uncategorized

How to Score High in Chemistry Alkyl Halides Online Mcqs Test?

Key Preparation Tips:

You May Also Like

Mustansar Khan

Leave a Reply Cancel reply

Important Chemistry Alkyl Halides Question and Answer

Chemistry Alkyl Halides Practice Test Online With Explanation

Uncategorized

How to Score High in Chemistry Alkyl Halides Online Mcqs Test?

Key Preparation Tips:

You May Also Like

Latest Updates

Mustansar Khan

Leave a Reply Cancel reply