Chapter 7: Class 7 Science Exam Tests
Class 7 Science MCQs - Chapter 7
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MCQ 31: Another example of 'electromagnets' in trains is
MCQ 32: Turning off a switch also put the bulb off, this is because the circuit is
MCQ 33: 'Earphones' are
MCQ 34: In 1 minute, 1kW electric fire uses 10 times as much energy as a
MCQ 35: Electrons release energy in the form of
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