Class 7 Online Courses

Chapter 21: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 21

Simple Chemical Reactions Multiple Choice Questions (MCQ) PDF - 1

The e-Book Simple chemical reactions Multiple Choice Questions and Answers (MCQs), simple chemical reactions MCQ Quiz PDF, test 1 to study online class 7 science certificate courses. Practice Physical and Chemical Change MCQs PDF, simple chemical reactions quiz questions and answers for online elementary school classes. 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: calcium oxide, calcium hydroxide, calcium carbonate and calcium chloride with "Simple Chemical Reactions" App Download (Free) for online elementary school classes. Solve physical and chemical change quiz questions, download Google eBook (Free Sample) for online courses.

Simple Chemical Reactions MCQ Quiz PDF Download: Science Test 1

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

A) calcium hydroxide
B) calcium oxide
C) calcium carbonate
D) calcium chloride

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

A) products
B) molecules
C) protons
D) atoms

MCQ 3: Chemical changes are

A) reversible
B) irreversible
C) interchangeable
D) non interchangeable

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

A) chemical reaction
B) physical reaction
C) transference
D) both a and b

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

A) bio gas
B) oxygen
C) carbon dioxide
D) nitrogen

Simple Chemical Reactions Learning App & Free Study Apps

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7th Grade Science App (Android & iOS)

ALL-in-ONE Learning App (Android & iOS)

7th Grade Science App (Android & iOS)

7th Grade Science App (Android & iOS)

8th Grade Science App (Android & iOS)

8th Grade Science App (Android & iOS)

Earth Science App (Android & iOS)

Earth Science App (Android & iOS)