Class 7 Courses

Chapter 20: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 20

Simple Chemical Reactions Multiple Choice Questions (MCQs) PDF Download - 1

The Simple chemical reactions Multiple Choice Questions (MCQs) with Answers PDF, simple chemical reactions MCQs PDF Download e-Book Ch. 20-1 to study Grade 7 Science Course. Learn Simple Chemical Reactions Quiz Questions and Answers to learn distance learning courses. The Simple Chemical Reactions MCQs App Download: Free learning app for physical and chemical change test prep for distance learning.

The Multiple Choice Question (MCQ Quiz): Chalk, limestone, marble, eggshells and seashells are made of; "Simple Chemical Reactions" App Download (Free) with answers: Calcium oxide; Calcium hydroxide; Calcium carbonate; Calcium chloride; to learn distance learning courses. Solve Physical and Chemical Change MCQ Questions, download Google eBook (Free Sample) for online courses.

Simple Chemical Reactions Questions & Answers PDF Download: MCQ Quiz 1

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

Simple Chemical Reactions Textbook App: Free Download Android & iOS

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Simple Chemical Reactions App (Android & iOS)

Simple Chemical Reactions App (Android & iOS)

7th Grade Science App (Android & iOS)

7th Grade Science App (iOS & Android)

8th Grade Science App (Android & iOS)

8th Grade Science App (Android & iOS)

6th Grade Science App (Android & iOS)

6th Grade Science App (iOS & Android)