Haloalkanes and Haloarenes Test

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Haloalkanes and Haloarenes Test - 9

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Weekly Quiz Competition

Question 1
1 / -0

Carbon tetra chloride has a dipole moment

A
μ= 0

B
μ= 4

C
μ = 2

D
μ = 1

Solution

CCl₄ is symmetrical hence dipole moment is zero.
Question 2
1 / -0

A hydrocarbon C₅H₁₀ does not react with chlorine in dark but gives a single monochloro compound C₅H₉Cl in bright sunlight. The hydrocarbon is

A
Cyclopentyne

B
Cyclopentene

C
Pentane

D
Cyclopentane

Solution

Alkanes undergoes free radical halogenation in presence of sunlight to give mixture of isomeric mono- and polyhaloalkanes. So cyclopentane must be the compound with formula C₅H₁₀which must have reacted with Chlorine in presence of sunlight (but not in dark) to form C₅H₉Cl.
Question 3
1 / -0

Liver when chronically exposed to chloroform gets damaged because

A
chloroform is not metabolised in the liver

B
chloroform gets converted to carbonyl chloride which is a poison

C
chloroform depresses central nervous system

D
chloroform develops sores in the liver

Solution

Chronic chloroform exposure may cause damage to the liver (where chloroform is metabolised to phosgene)

CHCl₃+ O₂→ 2COCl₂+ 2HCl
Question 4
1 / -0

Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?

A
Isohexane

B
Neohexane

C
Neopentane

D
Tertiary butyl chloride

Solution

Neopentane has all same type of hydrogen and has molecular weight 72u
Question 5
1 / -0

The iodine containing hormone produced by our body is

A
thyroxine

B
adrenalin

C
insulin

D
progesterone

Solution

Our body produces iodine containing hormone, thyroxine, the deficiency of which causes a disease called goiter
Question 6
1 / -0

Decomposition of benzene diozonium chloride by using Cu₂Cl₂/HCl to form chlorobenzene is

A
Wurtz – Fittig reaction

B
Sandmeyer's reaction

C
Finkelstein reaction

D
Friedel – Crafts reaction

Solution

C₆H₅N⁺₂Cl⁻+ Cu₂Cl₂/HCl → C₆H₅Cl.

Mixing the solution of freshly prepared diazonium salt with cuprous chloride or cuprous bromide results in the replacement of the diazonium group by –Cl or –Br. This is called sandmeyer's reaction.
Question 7
1 / -0

IUPAC name of (CH₃)₃CCl

A
t – butyl chloride

B
n – butyl chloride

C
3 – chloro butane

D
2 – chloro 2 methyl propane

Solution

Longest chain will be of three carbon to which Cl and CH₃ will be attached at 2 position.

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Re-Attempt Weekly Quiz Competition

Haloalkanes and Haloarenes Test - 9

Result

Haloalkanes and Haloarenes Test - 9

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SHARING IS CARING

Question 1

μ= 0

μ= 4

μ = 2

μ = 1

Solution

Question 2

Cyclopentyne

Cyclopentene

Pentane

Cyclopentane

Solution

Question 3

chloroform is not metabolised in the liver

chloroform gets converted to carbonyl chloride which is a poison

chloroform depresses central nervous system

chloroform develops sores in the liver

Solution

Question 4

Isohexane

Neohexane

Neopentane

Tertiary butyl chloride

Solution

Question 5

thyroxine

adrenalin

insulin

progesterone

Solution

Question 6

Wurtz – Fittig reaction

Sandmeyer's reaction

Finkelstein reaction

Friedel – Crafts reaction

Solution

Question 7

t – butyl chloride

n – butyl chloride

3 – chloro butane

2 – chloro 2 methyl propane

Solution

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