set 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 2 EXERCISES
The following question based on some important man made materials topic of general science mcq
(a) dried at room temperature after kneading
(b) heated strongly
(c) mixed with proper proportion of water
(d) glazed
The correct answers to the above question in:
Answer: (c)
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Read more chemistry test online Based General Science Questions and Answers
Question : 1
The most important raw materials used in the manufacture of cement are
a) transition metal oxides, sodium hydroxide or potassium hydroxide
b) limestone, clay and gypsum
c) potassium nitrate, charcoal and sulphur
d) limestone, sodium carbonate and silica
Answer »Answer: (b)
Cement is manufactured with limestone, clay and gypsum.
Question : 2
Glass is actually
a) an elastic solid
b) an ionic solid
c) a crystalline solid
d) a vitrified liquid
Answer »Answer: (a)
Glass is actually an elastic solid. H2O and aqueous NaOH can be differentiated with the help of red litmus.
Question : 3
Flint glass is obtained from which of the following ?
a) Sodium aluminum borosilicate
b) Sand, red lead and potassium carbonate
c) Zinc and barium borosilicate
d) Pure silica and zinc oxide
Answer »Answer: (b)
Flint glass is obtained from red lead and potatassium carbonate.
Question : 4
The aqueous solution of one of the following vitamins is dark in colour
a) B6
b) B2
c) B1
d) B12
Answer »Answer: (d)
The aqueous solution of vitamin B12 is dark in colour.
Question : 5
The principle of cleaning by soap is
a) viscosity
b) floatation
c) surface tension
d) elasticity
Answer »Answer: (c)
Soaps form surface films, reduce surface tension of solution and help in removing dirt and dust by emulsifying grease.
Question : 6
The major component used in preparation of different types of glasses is
a) calcium silicate
b) sodium borate
c) silica
d) sodium silicate
Answer »Answer: (c)
The major component used in the preparation of different types of glasses is silica.
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