set 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on nature of matter and composition topic of general science mcq
(a) Carbon
(b) Silicon
(c) Nitrogen
(d) Phosphorus
The correct answers to the above question in:
Answer: (a)
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Read more nature of matter and composition Based General Science Questions and Answers
Question : 1
Which one among the following is not a mixture?
a) Brass
b) Graphite
c) Glass
d) Steel
Answer »Answer: (b)
Question : 2
A sample contains two substances and has uniform properties. The sample is
a) an element
b) a heterogeneous mixture
c) a compound
d) a homogeneous mixture
Answer »Answer: (d)
Homogeneous mixture is a solution having uniform composition and properties throughout.
Question : 3
The process used to separate oil and water is
a) separating funnel
b) distillation
c) sublimation
d) chromatography
Answer »Answer: (a)
Question : 4
Select the one that is a chemical change.
a) Cooking of food
b) Freezing of water
c) Melting of wax
d) None of these
Answer »Answer: (a)
Chemical changes are irrerversible in nature.
Question : 5
Which one of the following is correct? Butter is
a) a molecular solid
b) a supercooled oil
c) an emulsion
d) None of these
Answer »Answer: (d)
Question : 6
Camphor can be purified by
a) sedimentation
b) filtration
c) distillation
d) sublimation
Answer »Answer: (d)
Camphor being a sublime substance can be purified by sublimation.
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