set 1 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) Ion-exchange resin process
(b) Clark’s process
(c) Calgon process
(d) Permutit process
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
Pure gold is –
a) 20 carats
b) 24 carats
c) 22 carats
d) 18 carats
Answer »Answer: (b)
Question : 2
Which of the following have low melting and boiling points?
a) Iron
b) Phosphorus
c) Sodium
d) Both (b) and (c)
Answer »Answer: (d)
Phosphorus is a non-metal and non-metals have low melting and boiling points.
Although sodium is a metal, it has low melting and boiling point.
Question : 3
Which of the following statement regarding non-metals is true?
a) Non-metals are non-lustrous with dull apppearence. Graphite, an allotrope of carbon and iodine have shining lustrous surfaces.
b) Non-metals are of two types only solids and gases.
c) Non-metals reacts with oxygen to form basic oxides generally.
d) Non-metals replace hydrogen from acids.
Answer »Answer: (a)
Question : 4
Which one of the following metals is liquid at ordinary temperature?
a) Nickel
b) Mercury
c) Lead
d) Tin
Answer »Answer: (b)
Question : 5
The softest mineral, Talc (Soapstone) is mainly
a) Sodium Silicate
b) Sodium Phosphate
c) Manganese Silicate
d) Magnesium Silicate
Answer »Answer: (d)
Question : 6
Which of the following statements regarding non-metals is false?
a) The black material inside a pencil is metal lead.
b) 11 non-metals are in gaseous state.
c) Gas carbon is a good conductor of heat and electricity.
d) All non-metals are non-sonorous in nature.
Answer »Answer: (a)
The black material inside a pencil is not metal lead. Actually it is graphite, a non-metal.
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