set 3 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) noble metals
(b) active metals
(c) dull metals
(d) bright metals
The correct answers to the above question in:
Answer: (a)
Noble metals are those metals which do not react easily and lie at the bottom of the activity series.
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Read more chemistry gk Based General Science Questions and Answers
Question : 1
The heaviest natural element is
a) Mercury
b) Gold
c) Uranium
d) Calcium
Answer »Answer: (c)
Question : 2
Which is the hardest in the following?
a) Glass
b) Quartz
c) Diamond
d) Platinum
Answer »Answer: (c)
Question : 3
Which one of the following is the correct sequence of the given substances in the decreasing order of their densities?
a) Gold > Mercury > Steel
b) Steel > Gold > Mercury
c) Steel > Mercury > Gold
d) Gold > Steel > Mercury
Answer »Answer: (a)
Question : 4
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
- High melting point
a) (ii) and (iii)
b) (i) and (ii)
c) (i) and (iii)
d) (i) and (iv)
Answer »Answer: (d)
Question : 5
Oxygen and ozone are
a) isomers
b) isotopes
c) allotropes
d) isobars
Answer »Answer: (c)
Question : 6
The chemical structure of the pearl is
a) Calcium Carbonate & Magnesium Carbonate
b) Calcium Chloride
c) Calcium Carbonate
d) Calcium Sulphate
Answer »Answer: (c)
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