Name a substance which is :
poisonous.

Name a substance which is : called 'wood spirit.'

Name a substance which oxidises conc. hydrochloric acid to chlorine.

Name a substance which acts as halogen carrier during the chlorination of benzene.

Which is a poisonous arthropod ?

Name a substance which can be used as an analgesic as well antipuretic.

Name a substance which can be used as an antiseptic as well as disinfectant.

Name a substance which inhibits free radical polymerisation.

Name a substance of which the specific resistance remains almost unchanged by the increase in temperature.

Name a substance which could be added to cement without affecting its quality.

Name two substances which contract on heating.