Chemistry Test 179

Result

Chemistry Test 179

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Weekly Quiz Competition

Question 1
4 / -1

A

B

C

D

Solution
Question 2
4 / -1

The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is

A
Chromatography

B
Crystallisation

C
Steam distillation

D
Sublimation

Solution

Steam distillation is the most suitable method of separation of 1 : 1 mixture of ortho and para nitrophenols as there is intramolecular hydrogen bonding in o-nitrophenol.
Question 3
4 / -1

A
X = 1-Butyne ; Y = 3-Hexyne

B
X = 2-Butyne ; Y = 3-Hexyne

C
X = 2-Butyne ; Y = 2-Hexyne

D
X = 1-Butyne ; Y = 2-Hexyne

Solution
Question 4
4 / -1

Roasting of sulphides give the gas X as a byproduct. This is colourless gas with choking smell of burnt sulphur and caused great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic, acts as a reducing agent and its acid has never been isolated. The gas X is

A
SO₂

B
CO₂

C
SO₃

D
H₂S

Solution

Based on the features given gas must be SO₂.
Question 5
4 / -1

The incorrect statement for the sulphur atom of ZnS is

A

B

C

D
Question 6
4 / -1

Which among the following will show maximum osmotic pressure?

A

B

C

D

Solution
Question 7
4 / -1

A

B

C

D

Solution
Question 8
4 / -1

A
1000 K

B
2000/(2.303 ) K

C
2000 K

D
1000/(2.303 ) K

Solution
Question 9
4 / -1

Which of the following will show Tyndall effect?

A
Aqueous solution of soap below critical micelle concentration.

B
Aqueous solution of soap above critical micelle concentration.

C
Aqueous solution of sodium chloride.

D
Aqueous solution of sugar.
Question 10
4 / -1

The metal oxide which cannot be reduced to metal by carbon is

A

B

C

D

Solution