Haloalkanes and Haloarenes Test 1

Result

Haloalkanes and 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

Which of the following is 4-bromopent-2-ene?

A

B

C

D

Solution

CH₃-CH=CH-CH(Br)-CH₃ is 4-bromopent-2-ene. [ According to priority order of functional groups =( double bond) comes before than that of halo (Br) group ]
Question 2
1 / -0

Metallic radii of some transition elements are given below. Which of these elements will have the highest density?

A
Cu

B
Co

C
Ni

D
Fe

Solution

On moving left to right along period, metallic radius decreases while mass increases. Decrease in metallic radius coupled with increase in atomic mass results in increase in density of metal.
Hence, among the given four choices Cu belongs to right side of Periodic Table in transition metal, and. it has highest density (89 g/cm³).
Question 3
1 / -0

The isomer of dichlorobenzene which has highest melting point:

A
o-dichlorobenzene

B
p-dichlorobenzene

C
m-dichlorobenzene

D
1,2 dichlorobenzene

Solution

p-Dichlorobenzene has higher melting point then o and m isomers because it is more symmetric in structure and fits perfectly in crystal lattice.
Question 4
1 / -0

Although haloalkane are polar in nature, yet they are slightly soluble in water. Which characteristic behavior is responsible for such kind of property?

A
Attraction between halogen and water is less than the attraction between original water molecules.

B
Attraction between halogen and water is more than the attraction between original water molecules.

C
Attraction between halogen and water is totally absent.

D
Attraction between halogen and water is same as the attraction between original water molecules.

Solution

Haloalkanes although polar in nature are insoluble in water because they are not able to form hydrogen bonds with water molecules.
Question 5
1 / -0

Which of the following is a tertiary halogenoalkanes?

A
2-Bromopentane

B
2-Bromo 3-methylpentane

C
Bromopentane

D
2-Bromo 2-methylpentane

Solution

√Br CH₃ -( CH )- CH₂ - CH₂ - CH₃ √CH₃ The carbon with which the Br is bonded is bonded with another 3 carbon atoms. So haloalkane is 3.
Question 6
1 / -0

Which of the following is not true about optical isomers?

A
They rotate the plane polarized light.

B
They are superimposable on their mirror image.

C
They posses at least one chiral carbon atom.

D
They are nonsuperimposable on their mirror image.

Solution

Superimposable (mirror images of each other) substances are achiral because chiral substances cannot have its own mirror image. And achiral substances do not show optical activity nor any optical isomers. Hence, answer is B.
Question 7
1 / -0

Which of the following is not an aryl halide?

A
m-ClCH₂C₆H₄CH₂C(CH₃)₃

B
(CH₃)₃CCH₂CH₃

C
o-Br-C₆H₄CH(CH₃)CH₂CH₃

D
p-ClC₆H₄CH₂CH(CH₃)₂

Solution

Because it is Open chain compound /Aliphatic Compound and not aryl halide as it does not contain halogen atom. It's simply alkane.
Question 8
1 / -0

Pick up the correct statement about alkyl halides.

A
They are associated with each other by H-bonds.

B
They dissolve easily in organic solvents.

C
They dissolve in water quickly.

D
They do not contain any polar bond in their molecules.

Solution

In general organic compounds are soluble in organic solvents. Hence alkyl halides are soluble in organic solvents.
Question 9
1 / -0

Which one of the following is 1-bromo-3-methyl butane?

A
(CH₃)₂CHCHBrCH₃

B
(CH₃)₂CHCH₂CH₂Br

C
CH₃CH₂CH₂CH(Br)CH₃

D
CH₃CH₂CH(Br)CH₂CH₃

Solution

It is 1-bromo-3-methylbutane.
Question 10
1 / -0

C₅H₁₁Br is least soluble in:

A
Ether

B
Alcohol

C
Water

D
None of these

Solution

C₅H₁₁Br are only very slightly soluble in water. They are more soluble in organic solvents.