O Level Chemistry Practice Test 160

Catalysts and Enzymes Quiz Questions PDF Download - 160

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Chapter 13 Quiz: Catalysts & Enzymes MCQs

MCQ: What is true about Enzymes?

A) they act as biological catalysts

B) they operate over a wide range of pH

C) they are highly specific

D) they operate over wide temperatures only

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

A) CuO

B) Cu₂O

C) CuO₂

D) Cu(OH)₂

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

A) picric acids

B) benzoic acids

C) phenolic acids

D) salicylic acid

MCQ: Molar mass of (NH₄)₂SO₄ is

A) 113.19 g/mol

B) 124.21 g/mol

C) 141.39 g/mol

D) 132.139 g/mol

MCQ: What is true about fractional distillation?

A) it cannot separate liquids whose boiling points are close

B) it can separate liquids whose boiling points are close

C) it can separate liquids whose boiling points are very high

D) none of above

Class Quizzes: O Level Chemistry Chapters

Molecules and Macromolecules Quiz

MCQ Questions

Chemical Symbols Quiz

MCQ Questions

Ions and Ionic Bonds Quiz

MCQ Questions

Relative Molecular Mass Quiz

MCQ Questions

Evaporation Quiz

MCQ Questions

Distillation: Purification Process Quiz

MCQ Questions

Pure Substances and Mixtures Quiz

MCQ Questions

Acids: Properties and Reactions Quiz

MCQ Questions

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