set 4 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) metalloid
(b) alloy
(c) metal
(d) non-metal
The correct answers to the above question in:
Answer: (d)
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Read more chemistry gk Based General Science Questions and Answers
Question : 1
Which one of the following is the secondary source of light in a fluorescent lamp?
a) Argon gas
b) Mercury vapour
c) Neon gas
d) Fluorescent coating
Answer »Answer: (d)
Question : 2
Brass is a mixture of
a) copper, nickel and zinc
b) copper and zinc
c) copper and tin
d) aluminium, copper and traces of Mg and Mn
Answer »Answer: (b)
Brass is a maxture of 80% Cu & 20% Zn.
Question : 3
The process of extraction of metal from its ores, is known as
a) purification
b) concentration
c) calcination
d) metallurgy
Answer »Answer: (d)
Question : 4
Match List-I with List-II:
List-I | List-II |
A. Best conductors of heat and electricity | 1. Gold |
B. The highest amount of metal is found | 2. Lead |
C. Most flexible and able to increase by bang metal | 3. Aluminium |
D. Minimum heat conducting | 4. Silver |
a) 2 3 4 1
b) 3 2 4 1
c) 1 3 2 4
d) 4 3 1 2
Answer »Answer: (d)
Question : 5
German silver is a mixture of –
a) copper, nickel and zinc
b) copper and zinc
c) copper and tin
d) aluminium, copper and traces of Mg and Mn.
Answer »Answer: (a)
German silver is a mixture of Cu (60%), Zn (20%) and Ni (20%).
Question : 6
Which among the following elements is abundant on the lunar surface and holds the potential to put an end to the energy crisis of the earth?
a) Helium-II
b) Helium-III
c) Helium-I
d) Helium-IV
Answer »Answer: (b)
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