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 A
(b) Vitamin B12
(c) Riboflavin
(d) Vitamin B6
The correct answers to the above question in:
Answer: (b)
Vitamin B12 (Cyanocobalamines): Cobalamine has by far the most complicated structure of all the vitamins.
It has a cobalt atom in the centre. It also has – CN groups in its structure.
It is a pink-coloured crystalline, water soluble vitamin.
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Read more chemistry test online Based General Science Questions and Answers
Question : 1
Which one of the following is a vitamin?
a) Oxalic acid
b) Ascorbic acid
c) Benzoic acid
d) Formic acid
Answer »Answer: (b)
Vitamin C is chemically ascorbic acid.
Question : 2
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.
Question : 3
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 : 4
Potash (Potassium carbonate) is used as a fertilizer. It is also known as
a) pearl ash
b) oil of vitriol
c) azo compound
d) Glauber’s salt
Answer »Answer: (a)
Question : 5
Which of the statements about glass are correct?
- Glass is a super-cooled liquid having infinite viscosity.
- Violet coloured glass is obtained by adding MnO2 .
- Glass is a man-made silicate.
- Glass is a crystalline substance.
a) 1, 2 and 3
b) 2, 3 and 4
c) 1, 2 and 4
d) 1 and 3
Answer »Answer: (d)
Glass is an amorphous substance.
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