Question

Fill in the blanks
1. _________ state of matter can undergo all the three thermal expansion.

2. _________ is the loudest sound tolerated by human ear.

3. We can replace electric bulb by __________ to conserve electricity.

4. A switch is connected to the _______ wire.

5. An instrument used to detect and measure the electric charges is called ______.​

Answer 1

Answer:  1)  All three states of matter (solid, liquid and gas) expand when heated.

2)   A whisper is about 30 dB, normal conversation is about 60 dB, and a motorcycle engine running is about 95 dB

3)

4) A switch or a fuse is always connected to the live wire.

5) electroscope

Explanation: