General Knowledge

Chemistry - Section 1

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Chemistry - Section 1

Practice and master this topic with our carefully crafted questions.

10 Questions
15 Minutes
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Question 61
The most commonly used bleaching agent is

A
alcohol
B
carbon dioxide
C
chlorine
D
sodium chlorine
Correct Answer: Option C

No answer description available for this question.

Question 62
The main use of salt in the diet is to

A
make the taste of food better
B
produce in small amounts the hydrochloric acid required for the digestion of food
C
ease the process of cooking
D
increase the solubility of food particles in water
Correct Answer: Option B

No answer description available for this question.

Question 63
The monomer of polythene is

A
vinyl chloride
B
ethylene
C
ethyl alcohol
D
None of the above
Correct Answer: Option B

No answer description available for this question.

Question 64
The luster of a metal is due to

A
its high density
B
its high polishing
C
its chemical inertness
D
presence of free electrons
Correct Answer: Option D

No answer description available for this question.

Question 65
The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

A
1.568 x 103
B
6.023 x 1019
C
4.84 x 1017
D
6.023 x 1023
Correct Answer: Option B

No answer description available for this question.

Question 66
The most malleable metal is

A
platinum
B
silver
C
iron
D
gold
Correct Answer: Option D

No answer description available for this question.

Question 67
The oil used in the froth floatation process is

A
coconut oil
B
olive oil
C
kerosene oil
D
pine oil
Correct Answer: Option D

Industrially, pine oil is used as collector in metal extraction from ores. For example, in copper extraction pine oil is used to soak all copper sulfide ores for froth flotation. Therefore, it is important in the industry for the froth flotation process.

Question 68
The most abundant rare gas in the atmosphere is

A
He
B
Ne
C
Ar
D
Xe
Correct Answer: Option C

No answer description available for this question.

Question 69
The Latin word formica means ant. The name formic acid is derived from this Latin word because

A
this acid, in ancient times, was used to eliminate ant-hills
B
this corrosive acid is secreted by ants to drive away their enemies
C
this acid was first obtained by the distillation of ants
D
ants are attracted by the odour of this acid
Correct Answer: Option C

No answer description available for this question.

Question 70
The ore which is found in abundance in India is

A
monazite
B
fluorspar
C
bauxite
D
magnetite
Correct Answer: Option A

No answer description available for this question.

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