Question

NCERT science chapter 14 class 7​

Answer 1

1. c

2. d

3. b

4. a

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Answer 2

Answer:

1. Magnetic effect of electric current - (c) Hans Christian Oersted

2. Electric bulb - (d) Thomas Alva Edison

3. Electric battery - (b) Alessandro Volta

4. Electric bell - (a) Alexander Graham Bell

Explanation:

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