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Question 1

Give an example of a metal which

  (i) is a liquid at room temperature.
  (ii) can be easily cut with a knife.
  (iii) is the best conductor of heat.
  (iv) is a poor conductor of heat.

Answer

(i)  Mercury is the metal which is liquid at room temperature.

(ii) Sodium & Potassium are the metals  that can be cut with a knife.

(iii) Silver is the metal which is the best conductor of heat.

(iv) Lead and Mercury are the metal that are poor conductors of heat.

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