Class 9 Chemistry MCQ
It is a good reducing agent
Fe
H
C
O
Reduction means
Removal of H2
Removal of electrons
Gain of electrons
Gain of O2
It is a strong electrolyte
H2O
CH3COOH
NaOH
C6H6
Spontaneous chemical reactions take place in:
electrolytic cell
Galvanic cell
(‘radio-button-click-target’, “Nelson’ s cell”)
downs cell
Films are coated by special chemical known as ____________ detectors.
Photographic
Image
Nil
Both
____________ do not conduct electricity.
Electrolyte
Non-electrolyte
Both
Nil
Gain of electrons in a reaction is called ____________reaction.
Oxidation
Reduction
Both
Nil
By electrolytic refining of copper , it is ____________ % pure.
98
99
99.99
100
Which one of the following is a galvanic cell?
Daniel cell
(‘radio-button-click-target’, “Nelson’s cell”)(‘radio-button-click-target’, “Down’s cell”)
Both B and C
The branch of chemistry which deals with inter conversion of electrical & chemical energy is:
Biochemistry
Electrochemistry
Organic chemistry
None of these
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