IGCSE O Level Chemistry MCQs – Mock Test 160

Catalysts and Enzymes MCQ with Answers PDF Download – Test 160

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Catalysts & Enzymes MCQ – Mock Test 160 PDF Download

MCQ 796: 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

MCQ 797: Combining Copper(II) (Cu⁺²) with Oxygen (O₂) results in:

CuO
Cu₂O
CuO₂
Cu(OH)₂

MCQ 798: Diazo reagent is used as a locating agent in the chromatography of:

picric acids
benzoic acids
phenolic acids
salicylic acid

MCQ 799: Molar mass of (NH₄)₂SO₄ is:

113.19 g/mol
124.21 g/mol
141.39 g/mol
132.139 g/mol

MCQ 800: 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

Catalysts & Enzymes MCQs App & eBook – IGCSE O Level Chemistry Entrance Tests

Molecules and Macromolecules MCQs

Chemical Symbols MCQs

Ions and Ionic Bonds MCQs

Relative Molecular Mass MCQs

Evaporation MCQs

Distillation: Purification Process MCQs

Pure Substances and Mixtures MCQs

Acids: Properties and Reactions MCQs

Chemical formulas MCQs

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