Name a non-metal that is :
lustrous,

Name a non-metal that is : used to kill germs in water,

Name a non-metal that is : liquid at room temperature.

Name a non-metal that is : a good conductor of heat and electricity,

Name a non-metal that is : used for filling into electric bulbs,

Name a non-metal that is : used for cancer therapy,

Name a non-metal that is : hardest naturally occurring substance,

Name one: non-metal which has lustre.

Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non malleable and are coloured. (a) Name a lustrous non-metal. (b) Name a non-metal which exists as a liquid at room temperature. (c) The allotrpic form of a non-metal is a good conductor of electricity . (d) Name a non-metal which is known to form the largest number of compounds. (e) Name a non-metal other than carbon which shows allotropy. (f) Name a non-metal which is required for combustion.

Name one metal and one non-met-al that exist in liquid state at room temperature. Also name two metals having melting point less than 310 K ( 37^(@)C ).

Select the correct answer from A, B, C, D & E for each statement given below: A: Gunpowder B: Iodine C: Boron D: Helium E: Bromine 1. A diatomic molecule. 2. A metalloid 3. A non-metal which is lustrous. 4. A mixture consisting of elements & a compound. 5. A noble gas.