HaloAlkanes & HaloArenes Test

Result

HaloAlkanes & HaloArenes Test - 1

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Statement-1: 1-Chlorobutane on heating with alcoholic KOH undergoes dehydrohalogenation to yield 1-butene as the major product.

Statement-2: The reaction does not occur through carbocation intermediate but instead occurs by a concerted mechanism.

A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.

B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

C
Statement-1 is true but Statement-2 is false.

D
Statement-1 is false but Statement-2 is true.

Solution

Statement-2 correctly explains Statement-1.
Question 2
1 / -0

The C-I bond (in CH₃CH₂CH₂I )is formed by the overlapping of ____.

A
2sp³ – 2p_zorbitals

B
2sp³- 5p_zorbitals

C
2sp³ – 4p_zorbitals

D
2sp³ – 3p_zorbitals

Solution

Carbon belongs to 2nd period, while iodine belongs to 5th period, hence the C-I bond in CH₃CH₂CH₂I must be formed by the overlapping of 2sp³orbital of C with the 5p_z orbital of iodine.
Question 3
1 / -0

Although hexafluoroethane (C₂F₆, b.p. - 79°C) and ethane (C₂H₆, b.p. - 89°C) differ very much in their molecular weights, their boiling points differ only by 10°C. This is due to

A
Neither of the two

B
both (low polarizability) and (nearly similar size of F and H)

C
nearly similar size of F and H

D
low polarizability of F

Solution

Small difference in boiling points of C₂F₆ and C₂H₆ is due to the fact that (i) the F aton is only slightly larger than H, and (ii) F has low polarizability
Question 4
1 / -0

Statement-1: Grignard reagents are prepared in ethers but not in benzene.

Statement-2: Grignard reagents are soluble in benzene.

A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.

B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

C
Statement-1 is true but Statement-2 is false.

D
Statement-1 is false but Statement-2 is true.

Solution

The correct reason is: Grignard reagents are soluble in ether but not in benzene.