Which of the following is a member of the noble gas family?
a) hydrogen
b) helium
c) carbon
d) oxygen
A
very light and inert gas is
a) oxygen
b) hydrogen
c) helium
d) neon
Nobel gases are also called the………..
a) action gases
b) inert gases
c) silent gas
d) none of these
Which of the following lighter than air:
a) helium
b) hydrogen
c) both a and b
d) none of the
A ductile element which is a good conductor of electricity is called
a) copper
b) rubber
c) glass
d) sand
Copper is used in the production of………..?
a) Brick kilns
b) Children toys
c) Kitchen utilities
d) Electric wires
