Melting point of gallium is……….
a) 29.76oC
b) 17.85oC
c) 30.78oC
d) 9.87oC
A substance whose atoms have the same atomic number is called……………..
a) substance
b) element
c) mixture
d) compound
Majority of the elements exist in the form of :
a) solid
b) liquid
c) gas
d) metalloid
Tungsten is represented by…………..
a) T
b) Tn
c)W
d) Sn
In water fixed ratio of hydrogen and oxygen by mass is………..
a) 8:1
b) 2:16
c) 1:8
d) 2:1
Water is composed of……… elements.
a) 4
b) 2
c) 3
d) 1
