IGCSE O Level Chemistry Entrance Exam MCQs – Mock Test 165

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MCQ 821: The brightness of battery light depends on the:

polarization
difference in the reactivity series of two metals in the battery
volts of bulb attached to the battery
none of above

MCQ 822: When dichromate (VI) ion becomes reduced to chromium (III) ion, a change of color occurs from:

purple to pink
purple to colorless
orange to purple
orange to green

MCQ 823: In Na₂CO₃.10H₂O, the highest percentage composition is of:

sodium
oxygen
water
carbon

MCQ 824: "No fixed volume" is a characteristic of:

liquids
solids
gases
aqueous solutions

MCQ 825: Chemical composition of a compound:

fixed
not fixed
variable
none of above

Chemical to Electrical Energy Quiz App & eBook – IGCSE O Level Chemistry Textbook Tests

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