Physics
The blue colour of water in the sea is due to

Reflection of blue sky by sea water
Reflection of blue light by impurities in sea water
Absorption of other colours except blue by water molecules
Scattering of blue light by water molecules

ANSWER DOWNLOAD EXAMIANS APP

Physics
Isotopes of an element contain

equal number of nucleons
equal number of protons and electrons
the same number of neutrons but different number of protons
the same number of protons but different number of neutrons

ANSWER DOWNLOAD EXAMIANS APP