Chemistry Refining Online Exam Quiz
Chemistry Refining GK Quiz. Question and Answers related to Chemistry Refining. MCQ (Multiple Choice Questions with answers about Chemistry Refining
What is the purity range for copper obtained from electrolytic refining?
Options
A : 90-95%
B : 98-99%
C : 100%
D : 99.95-99.99%
Which of the following is an electrolyte used during the electrolytic refining of copper?
Options
A : Copper sulphate solution
B : Copper sulphate solution acidified with sulphuric acid
C : Sulphuric acid
D : Copper chloride
Which of the following processes is used to purify lead?
Options
A : Distillation
B : Liquation
C : Electrolytic refining
D : Zone refining
Which of the following is not refined by zone refining method?
Options
A : Germanium
B : Silicon
C : Gallium
D : Gold
What is the anode made up of in electrolytic refining?
Options
A : Impure metal
B : The metal ore
C : Pure metal
D : Double salt of metal
Which of the following is not an impurity generally present in crude metals?
Options
A : Other metals
B : Non-metals
C : Unreacted oxides
D : Pine oil
Why is zone refining carried out in an inert atmosphere?
Options
A : To prevent reduction of metal
B : To prevent oxidation of metal
C : To reduce the external pressure
D : To reduce the external temperature
Zone refining is also called fractional crystallization.
Options
A : True
B : False
C :
D :
Refining is not an important process in metallurgy.
Options
A : True
B : False
C :
D :
Which of the following metals cannot be refined by distillation?
Options
A : Zinc
B : Cadmium
C : Mercury
D : Tin
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