Class 7 Online Courses

Chapter 18: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 18

Physical and Chemical Changes Quiz Questions and Answers PDF - 19

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Physical and Chemical Changes Questions & Answers PDF Download: MCQ Quiz 19

MCQ 91: Nitrogen is obtained from

A) gaseous air
B) liquefied air
C) solidified air
D) air spaces in soil

MCQ 92: The reason of low density of gases is

A) number of particles per unit area
B) number of particles per unit volume
C) mass per unit area
D) mass per unit volume

MCQ 93: The reaction that gives out heat, while taking place is known as

A) exothermic reaction
B) endothermic reaction
C) reversible reaction
D) substitution reaction

MCQ 94: The 'volume' of gases is

A) indefinite
B) definite
C) dependent
D) reduced

MCQ 95: The compounds made up of hydrogen and carbon are known as

A) carbohydrates
B) hydrocarbons
C) alkanes
D) alkenes

Physical and Chemical Changes Learning App & Free Study Apps

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Physical and Chemical Changes App (Android & iOS)

Physical and Chemical Changes App (Android & iOS)

7th Grade Science App (Android & iOS)

7th Grade Science App (Android & iOS)

Earth Science App (Android & iOS)

Earth Science App (Android & iOS)

6th Grade Science App (Android & iOS)

6th Grade Science App (Android & iOS)