Class 7 Online Courses

Class 7 science Practice Tests

Class 7 Science Online Tests

Conductors and Insulators MCQ Quiz Online PDF Download

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Class 7 Science MCQs: Conductors and Insulators Quiz Questions PDF Download

MCQ: In conductors, electrons can flow because their

A) ions are free
B) protons are free
C) electrons are free
D) negative ions are free

MCQ: Poor conductor of electricity is

A) silver
B) aluminum
C) water
D) copper

MCQ: Ions are charged particles. They are formed when an atom

A) gains electrons
B) loses electrons
C) gains or loses electrons
D) shares electrons

MCQ: The materials that allow the electrons to flow through them is known as

A) insulators
B) conductors
C) electrolytes
D) bases

MCQ: An example in which light emitting diodes are used, is

A) calculator
B) hard drive
C) optical drive
D) analog watch

Practice Tests: Class 7 Science Exam Prep

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