O Level Chemistry MCQs – Certification Test 235

Measuring Speed of Reaction MCQ (Question 235) – App & e-Book Download

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MCQ 235: During a chemical reaction, the:

mass of catalyst remains unchanged
physical state of catalysts remain unchanged
changes in the chemical composition of catalysts may be observed
chemical composition of the catalyst may change

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Measuring Speed of Reaction MCQ App & e-Book – O Level Chemistry Textbook Tests

Ionic Compounds and Crystal Lattices Test 246

Electrical Devices and Circuit Symbols Test 247

pH Scale and Acid and Alkali Test 248

Chemical Reactions Test 249

Mixtures and Compounds Test 250

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Strong and Weak Acids Test 253

Mixtures and Compounds Test 254

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