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) Lithium and Osmium
(b) Aluminium and Osmium
(c) Lithium and Mercury
(d) Aluminium and Mercury
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
The chemical structure of the pearl is
a) Calcium Carbonate & Magnesium Carbonate
b) Calcium Chloride
c) Calcium Carbonate
d) Calcium Sulphate
Answer »Answer: (c)
Question : 2
Oxygen and ozone are
a) isomers
b) isotopes
c) allotropes
d) isobars
Answer »Answer: (c)
Question : 3
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 : 4
Which of the following mineral does not contain Al ?
a) Feldspar
b) Cryolite
c) Mica
d) Fluorspar
Answer »Answer: (d)
Fluorspar (CaF2 ),
Cryolite (Na3AlF6 ),
Feldspar (KAlSi3O8) and
Mica (K2O.3Al2O3 .6SiO2 .2H2O)
Question : 5
The metalloids include the elements
a) Germanium, Tellurium
b) Boron, Silicon
c) Arsenic, Antimony
d) All of these
Answer »Answer: (b)
Both boron and silicon are metalloids.
Question : 6
Why is nitrogen molecule chemically less active?
a) It has high electronegativity
b) It has high dissociation energy
c) It has small atomic radius
d) It has stable electronic configuration
Answer »Answer: (b)
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