Class 7 Science MCQs App | Simple Chemical Reactions MCQs e-Book PDF | 1
Class 7 Science MCQs (Grade 7) From Textbook

Class 7 Science MCQs – Practice Test 1 (Chapter 20)

Simple Chemical Reactions MCQs with Answers PDF Download – Test 1

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The "Simple Chemical Reactions MCQs" App Download: Conservation of mass is obtained when the total mass of reactants is equal to total mass of; MCQ with answers: molecules, products, protons, and atoms. Solve Physical and Chemical Change MCQ Questions, download Google e-Book (Free Chapter) to achieve academic success online.

Simple Chemical Reactions MCQs – Practice Test 1 PDF Download

MCQ 1: Chalk, limestone, marble, eggshells and seashells are made of:

  1. calcium hydroxide
  2. calcium oxide
  3. calcium carbonate
  4. calcium chloride

MCQ 2: The conservation of mass is obtained when the total mass of reactants is equal to total mass of:

  1. products
  2. molecules
  3. protons
  4. atoms

MCQ 3: Chemical changes are:

  1. reversible
  2. irreversible
  3. interchangeable
  4. non interchangeable

MCQ 4: If baking soda or fruit salt is mixed with vinegar, there takes place a:

  1. chemical reaction
  2. physical reaction
  3. transference
  4. both a and b

MCQ 5: Burning of fossils fuel results in the production of:

  1. bio gas
  2. oxygen
  3. carbon dioxide
  4. nitrogen

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