IGCSE O Level Chemistry Practice Test 160
Catalysts and Enzymes Multiple Choice Questions (MCQs) PDF Download - 160
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Catalysts & Enzymes MCQ Quiz with Answers PDF Download: Test 160
What is true about Enzymes?
- they act as biological catalysts
- they operate over a wide range of pH
- they are highly specific
- they operate over wide temperatures only
Combining Copper(II) (Cu+2) with Oxygen (O2) results in
- CuO
- Cu2O
- CuO2
- Cu(OH)2
Diazo reagent is used as a locating agent in the chromatography of
- picric acids
- benzoic acids
- phenolic acids
- salicylic acid
Molar mass of (NH4)2SO4 is
- 113.19 g/mol
- 124.21 g/mol
- 141.39 g/mol
- 132.139 g/mol
What is true about fractional distillation?
- it cannot separate liquids whose boiling points are close
- it can separate liquids whose boiling points are close
- it can separate liquids whose boiling points are very high
- none of above
IGCSE O Level Chemistry Exam Prep Tests
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