set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 4 EXERCISES
The following question based on metals, non metals, minerals, ores, properties, uses topic of general science mcq
(a) Aragonite and Conchiolin
(b) Ammonium Sulphate and Sodium Carbonate
(c) Calcium Carbonate and Magnesium Carbonate
(d) Calcium Oxide and Ammonium Chloride
The correct answers to the above question in:
Answer: (a)
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Read more chemistry gk Based General Science Questions and Answers
Question : 1
One of the constituents of amalgam is
a) iron
b) aluminium
c) copper
d) mercury
Answer »Answer: (d)
Question : 2
The form of carbon known as graphite
a) contains a higher percentage of carbon than diamond
b) is a better electrical conductor than diamond
c) is harder than diamond
d) has equal carbon-to-carbon distances in all directions
Answer »Answer: (b)
Question : 3
Which of the following statement is false?
a) Mercury is the only liquid metal.
b) Metals are good conductors of heat and electricity.
c) Gold, Silver and Zinc are most malleable metals.
d) Bromine is the only liquid non-metal.
Answer »Answer: (c)
Gold and Silver are most malleable metals whereas zinc metal is non-malleable and brittle.
Question : 4
Which allotropy of carbon is in rigid three- dimensional structure?
a) Fullerene
b) Diamond
c) Graphite
d) Carbon black
Answer »Answer: (b)
Question : 6
Assertion (A):
Sodium metal is stored under kerosene.
Reason (R):
Metallic sodium melts when exposed to air.
a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
b) (A) is true, but (R) is false
c) Both (A) and (R) are true and (R) is the correct explanation of (A)
d) (A) is false, but (R) is true
Answer »Answer: (b)
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