Fill in the blanks :
(a) The most ductile metal is..............
(b) A metal stored in kerosene oil is..............
(c) Tungsten metal is a poor conductor of.............
(d) .............is a soft metal.
(e) ...............is the hardest compound known to us.
(f) A non-metal used to purify water is..............
(g) A metal that gives dazzling effect to crackers when they explode is.................
(h) A chemical compound that makes up the striking heads of match sticks is...............