Water is always present in the air as;
a) Fog
b) Clouds
c) Frost
d) Vapors
Different properties of solids, liquids and gases are due to;
a) Different volume
b) Different arrangement of particles in them
c) Different shapes
d) Same origin
The simplest material are made up of same type of atom is called;
a) Atom
b) Element
c) Molecules
d) Compound
They obtain their food by decomposing the dead bodies into simple components. This process is called……..
a) rusting
b) melting
c) decaying
d) burning
The flame develops during combustion reaction
is called………
a) rusting
b) melting
c) decaying
d) burning
The change that occurred on the iron due to
action of oxygen and water is called…….
a) rusting
b) melting
c) decaying
d) burning
