IGCSE O Level Chemistry MCQs - Chapter 4

Electricity and Chemistry Quiz Questions and Answers PDF - 19

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Electricity & Chemistry Questions & Answers PDF Download: MCQ Quiz 19

MCQ 91: Weak acids are weak electrolytes because of the presence of

A) lower valence electrons

B) high number of ions

C) high number hydrogens

D) low number hydrogens

MCQ 92: Saucepans can be manufactured through the electrolysis of

A) nickel

B) galvanized zinc

C) chromium

D) copper

MCQ 93: Paraffin is an example of

A) strong electrolyte

B) non-electrolyte

C) weak electrolyte

D) catalyst

MCQ 94: In the electrolysis of aqueous solutions of dilute acids or dilute alkalis, the amount of hydrogen given off is roughly

A) half of the oxygen given off at the anode

B) same as of oxygen given off at anode

C) twice the oxygen given off at anode

D) twice the oxygen given off at cathode

MCQ 95: Electroplating of chromium helps in the manufacturing of

A) car bumpers

B) saucepans

C) cutlery

D) watches

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