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) Vitamin C
(b) Vitamin A
(c) Vitamin D
(d) Vitamin B
The correct answers to the above question in:
Answer: (b)
Night-blindness is caused due to the deficiency of vitamin A.
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Read more chemistry test online Based General Science Questions and Answers
Question : 1
Which one of the following correctly defines the state of glass?
a) Condensed gas
b) Super cooled liquid
c) Crystalline solid
d) Liquid crystal
Answer »Answer: (b)
Glass is an amorphous, hard, brittle, super cooled liquid.
Question : 2
Washing soaps are potassium and sodium salts of
a) mineral acids
b) fatty acids
c) dicarboxylic acids
d) None of these
Answer »Answer: (b)
Question : 3
What is the composition of nitrolim – a chemical fertilizer ?
a) Calcium carbide and carbon
b) Calcium carbide and nitrogen
c) Nitrogen and limestone
d) None of these
Answer »Answer: (d)
Calcium cyanamide (CaCN2) mixed with carbon (C) is called nitrolim.
${CaC_2 + N_2} ↙ {Cal.Carbide} ⟶ {CaCN_2 + C} ↙ {Nitrolim}$
Question : 4
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 : 5
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 : 6
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.
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