set 4 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) a carbonate ore of silver
(b) an oxide ore of silver
(c) a sulphite ore of silver
(d) a chloride ore of silver
The correct answers to the above question in:
Answer: (d)
Chemical formula of horn silver is AgCl.
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Read more chemistry gk Based General Science Questions and Answers
Question : 1
Which of the following is not a nitrogenous fertilizer?
a) CaCN2
b) NH4NO3
c) Ca(CN)2
d) Urea
Answer »Answer: (c)
Question : 2
Mercury is basically used in thermometer devices because its especiality is
a) High liquidity
b) High circulation power
c) High density
d) High specific heat
Answer »Answer: (b)
Question : 3
Aluminium is used in thermite welding because -
a) aluminium is a strong oxidising agent
b) aluminium is a light metal
c) aluminium has more affinity for oxygen
d) aluminium is a reactive metal
Answer »Answer: (c)
Fe2O3 + 2Al(s) ⟶ Al2O3(s) + 2Fe(l)
Question : 5
Sodium is obtained by the electrolysis of
a) fused sodium chloride
b) an aqueous solution of sodium chloride
c) an aqueous solution of sodium hydroxide
d) fused sodium sulphate
Answer »Answer: (a)
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