Class 9 Chemistry MCQs – Practice Test 6 (Chapter 2)

Electrochemistry MCQ with Answers PDF Download – Test 6

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Electrochemistry MCQ – Practice Test 6 PDF Download

MCQ 26: In chromium plating, few drops of Sulphuric acid are added to the electrolyte to prevent:

oxidation
reduction
hydrolysis
sublimation

MCQ 27: The electrodes used in the production of sodium metal are:

iron cathode and graphite anode
sodium cathode and carbon anode
aluminum cathode and fluoride anode
aluminum cathode and sodium anode

MCQ 28: In thermal power stations, carbon atoms undergo oxidation to form:

CO₂
CO
H₂O
O₂

MCQ 29: Electrolytes convert electricity in:

solid state
liquid state
gaseous state
plasma state

MCQ 30: A concentrated aqueous solution of sodium chloride is called:

aqueous solution
salt solution
brine
lemonade

Electrochemistry MCQ App & e-Book – Class 9 Chemistry Entrance Exam

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