set 2 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) irregular arrangement of silicate units in glass.
(b) regular arrangement of silicate units in glass.
(c) its high viscosity.
(d) its high coefficient of thermal expansion.
The correct answers to the above question in:
Answer: (a)
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Read more chemistry test online Based General Science Questions and Answers
Question : 1
Deficiency of vitamin A results in
a) sterility
b) skin diseases
c) lose in apetite
d) retarted growth
Answer »Answer: (d)
In childhood, lack of vitamin A retards growth and hence like other vitamins, it is also said to be a growth-promoting factor.
In mild deficiency, it leads to night blindness. Its prolonged deficiency leads to xerophthalmia.
Question : 2
Deficiency of vitamin E causes
a) Hemolytic anemia
b) Scurvy
c) Beriberi
d) None of these
Answer »Answer: (a)
Question : 3
Which one of the following is not present in cement?
a) Alum
b) Alumina
c) Clay
d) Gypsum
Answer »Answer: (a)
Gypsum is added in calculated quantity in order to adjust the rate of setting of cement. Alum is NOT present in cement.
Question : 4
Which one among the following is the main ingredient in cement?
a) Clay
b) Limestone
c) Gypsum
d) Ash
Answer »Answer: (b)
The composition of cement is CaO (lime) or limestone 62%, silica (SiO2) 22%, alumina (Al2O3) 7.5%, magnesia (MgO) 2.5%, etc.
Thus, limestone is the major raw material for cement.
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