Chemistry
The structure of NaCl crystal is

Octahedral
Square planar
Face centered cubic
Body centered cubic

ANSWER DOWNLOAD EXAMIANS APP

Chemistry
Water cycle refers to

Water distribution in relatively dry areas
An integrated attempt to recycle water in relatively arid regions
Scientific management of water in areas excessively plagued with water-logging
Constant movement of water from ocean to land and back to ocean once again

ANSWER DOWNLOAD EXAMIANS APP