Multiple choice

By dropping some water on a glowing electric bulb, it bursts. This is because glass is a

  1. good conductor of heat

  2. bad conductor of heat

  3. transparent substance

  4. good conductor of electricity

  5. bad conductor of electricity

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Glass is a bad conductor of heat, due to this the water cools the outer surface of the bulb,  it contracts but the inner surface of bulb remains hot. This causes it to burst.