Chemistry
Name:
(a) Three different forms of carbon.
(b) A form of carbon used as a gem.
(c) Two substances used to make electric wires.
(d) Two substances used to make jewellery.
(e) A substance used as an insulator.
Related Questions
Match the columns:
Column A Column B (a) Metals (i) Non-reactive (b) Molecules (ii) Brittle (c) Non-metals (iii) Lustrous (d) Nobel gases (iv) Smallest unit of compound Circle the odd one out on the basis of the property given in the brackets.
(a) hydrogen, nitrogen, chlorine, phosphorus (state)
(b) sodium, potassium, iron, lithium (hardness)
(c) graphite, diamond, iodine, coal (forms of a same element)
(d) helium, neon, argon, bromine (reactivity)
Give one use of each of the following substances:
(a) Iron
(b) Brass
(c) Coal
Give reason:
A frying pan is made up of steel but its handle is made up of wood.