set 3 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) Liquid mixed with a gas
(b) Solid mixed with a gas
(c) Gas mixed with a gas
(d) Gas mixed with a liquid and a solid
The correct answers to the above question in:
Answer: (d)
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Read more nature of matter and composition Based General Science Questions and Answers
Question : 1
Select the one that is not a chemical change ?
a) Dissolution of oxygen in water.
b) Dissolution of carbon dioxide in water.
c) Dissolution of ammonia in water.
d) None of these is a chemical change.
Answer »Answer: (a)
Oxygen is insoluble in water.
Question : 2
The process used to separate oil and water is
a) separating funnel
b) sublimation
c) distillation
d) chromatography
Answer »Answer: (a)
As oil being less denser than water it forms upper layer. Thus mixture of oil and water can be separated by using separating funnel.
Question : 3
The latest discovered state of matter is
a) plasma
b) solid
c) Bose-Einstein condensation
d) liquid
Answer »Answer: (a)
Question : 4
The chemical formula for 'laughing gas' is
a) N$O_2$ (Nitrogen dioxide)
b) $N_2$O(Nitrous oxide)
c) NO (Nitric oxide)
d) $N_2O_5$ (Nitrogen pentoxide)
Answer »Answer: (b)
Question : 5
Nail polish remover contains
a) formaldehyde
b) acetone
c) benzene
d) acetic acid
Answer »Answer: (b)
Question : 6
Which chemical was an important symbol in our freedom struggle ?
a) Medicine
b) Glucose
c) Fertilizer
d) Sodium chloride
Answer »Answer: (c)
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