set 2 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) petrol > alcohol > water > kerosene oil
(b) water > alcohol > kerosene oil > petrol
(c) alcohol > petrol > water > kerosene oil
(d) petrol > alcohol > kerosene oil > water
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
When we put some crystals of potassium permanganate in a beaker containing water, we observe that after sometime whole water has turned pink. This is due to
a) sublimation of crystals
b) boiling
c) melting of potassium permanganate crystals
d) diffusion
Answer »Answer: (d)
Question : 2
Which of the following is an example of a homogeneous substance?
a) Oil-water solution
b) Copper sulphate
c) Granite
d) Muddy water
Answer »Answer: (b)
It is a compound.
Question : 3
Tails of comets are visible due to
a) Brownian movement
b) Tyndall Effect
c) Reflection
d) None of these
Answer »Answer: (b)
Question : 4
A pungent smell often present near the urinals is due to
a) ammonia
b) sulphur-di-oxide
c) chlorine
d) urea
Answer »Answer: (a)
Question : 5
Which one of the following is not a mixture?
a) Baking soda
b) Tootpaste
c) Toilet soap
d) Vinegar
Answer »Answer: (a)
Question : 6
Compounds
a) contain only one type of element
b) can be separated by their physical properties
c) are the same as mixtures
d) are different kinds of atoms chemically combined with each other.
Answer »Answer: (d)
In a compund the elements are present in a fixed ratio by weight.
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