Chemistry Test 150

Result

Chemistry Test 150

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Weekly Quiz Competition

Question 1
4 / -1

Which one the following will be the most reactive for E₁ reaction?

A

B

C

D
Question 2
4 / -1

In which of the following reaction phenol is not obtained :-

A

B

C

D
Question 3
4 / -1

Which of the following will not give precipitate will aq.AgNO₃?

A

B

C

D
Question 4
4 / -1

The end products of the following sequence of reaction are

A
yellow precipitate of CHI₃,

B
yellow precipitate of CHI₃,

C
yellow precipitate of CHI_3,

D
yellow precipitate of CHI₃,

Solution
Question 5
4 / -1

Find the last product [D] is reaction sequence

A

B
C₆H₅–CH=CH–CH₂–CH₃

C

D

Solution
Question 6
4 / -1

In which of the following reactions, alcohol is formed as product gives positive iodoform test?

A

B

C

D

Solution
Question 7
4 / -1

The appropriate reagent for the transformation

A
Zn(Hg), HCl

B
NH₂NH₂, OH

C
H₂/Ni

D
NaBH₄

Solution

Both Zn(IIg), MCI (Clemmenson's reduction) and NH₂NH₂, OH^– (Wolf-Kishner reduction) can reduce to –CH₂–CH₃ group but as HCl may also bring about the dehydration of alcohol to give an alkene so the most appropriate reagent will be NH₂ NH₂, OH^–.
Question 8
4 / -1

Electron addition would be easier in :

A
Al⁺²

B
Al⁺¹

C
Al

D
Al^–

Solution
Question 9
4 / -1

How many S–S bonds, S–O–S linkages, σ-bonds and π-bonds are present in trimer of SO₃ ?

A
0,4,12,6

B
0,3,16,2

C
0,3,12,6

D
0,6,12,16

Solution

(SO₃)₃ or S₃O₉

S–S bonds = 0

S–O–S linkages = 3

σ – bonds = 12

π – bonds = 3
Question 10
4 / -1

Assign the hybridization, shape and magnetic moment of K₃ [Cu(CN)₄] :

A
sp³, tetrahedral, 1.73 B.M.

B
dsp², square planar, 1.73 B.M.

C
sp³, tetrahedral, diamagnetic

D
dsp², square planar, 2.44 B.M.

Solution