Chemistry Test 21

Result

Chemistry Test 21

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Weekly Quiz Competition

Question 1
4 / -1

The synthesis of alkyl fluorides is best accomplished by:

A
Free radical fluorination

B
Sandmeyer's reaction

C
Finkelstein reaction

D
Swarts reaction

Solution

R – X + AgF → R – F + AgX (Swarts reaction)
Question 2
4 / -1

The hydrocarbon which can react with sodium in liquid ammonia is

A
CH₃CH=CHCH₃

B
CH₃CH₂C≡CCH₂CH₃

C
CH₃CH₂CH₂C≡CCH₂CH₂CH₃

D
CH₃CH₂C≡CH

Solution

The hydrogen which has the acidic hydrogen can react with sodium in liquid ammonia. Among the given options, only CH₃–CH₂–C≡CH has the acidic hydrogen, thus it can react with sodium in liquid ammonia.
Question 3
4 / -1

The colour of KMnO₄ is due to:

A
M → L charge transfer transition

B
d - d transition

C
L → M charge transfer transition

D
σ - σ* transition

Solution

Colour of KMnO₄ is due to charge transfer from O^2- (ligand) to Mn(VII) (Central metal ion).