IGCSE O Level Chemistry MCQs – Practice Test 8 (Chapter 11)

Redox Reactions Notes Questions with Answers PDF Download – Test 8

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Free "IGCSE O Level Chemistry Notes" App with MCQ: Change of orange color of Chromium(VI) (Cr⁺⁶) to green color of Chromium(III) (Cr⁺³) indicates the presence of a; with answers: oxidizing agent, reducing agent, reagent, and drying agent for chemistry subject revision. Practice Molecules & Macromolecules Quiz Questions, download Kobo e-Book (Free Chapter) for chemistry subject revision.

Redox Reactions Test Questions and Answers PDF Download: MCQ 8

MCQ 36: Change of orange color of Chromium(VI) (Cr⁺⁶) to green color of Chromium(III) (Cr⁺³) indicates the presence of a:

reducing agent
oxidizing agent
reagent
drying agent

MCQ 37: Which of the following option is correct in case of exothermic reactions?

making of chemical bond
more common reactions
burning of carbon
all of above

MCQ 38: 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 39: Reducing agents does not include:

chlorine
carbon
potassium iodide
carbon monoxide

MCQ 40: At high temperatures, enzymes:

act very rapidly
get denatured
form cations
form anions

Redox Reactions Notes App & e-Book – IGCSE O Level Chemistry Admission Tests

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