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.

Give an example of a metal which: Is a liquid at room temperature

Which one of the following is a poor conductor of heat?

Give an example of a metal which: Can be easily cut with a knife.

Give examples for poor solid conductors and liquid conductors.

Name a non-metal which is good conductor of electricity and heat.

Give an example of a relation. Which is (i) Symmetric but neither reflexive nor transitive. (ii) Transitive but neither reflexive nor symmetric. (iii) Reflexive and symmetric but not transitive. (iv) Reflexive and transitive but not symmetric. (v) Symmetric and transitive but not reflexive.

Which of the following are true about wool ?(i) Hair of animals like goat, sheep, camel etc, are used to obtain woolen fibre (ii) Fabrics like shawls and sweaters are obtained from wool (iii) wool is a poor conductor of heat and it protects us from cold (iv) Woolen cloth helps douse fire.

Assertion (A) : Wood is a good conductor of heat. Reason (R) : Substances which do not allow heat to pass through them are called poor conductors of heat.

Name the metals which are both good conductors of heat and electricity.