As the population increases their demand for ………. also increases.
a) food
b) clothes
c) paper
d) all of these
Industrial units discharge their waste to ……
a) open ground
b) running water
c) both a & b
d) canals
The industrial discharge are absorbed by lover life and passes into food chain causing
a) death
b) birth defects
c) mental problems
d) all of these
Most of the industries have been started without…………
a) proper planning
b) waste treatment plant
c) both a & b
d) none of these
Industrial wastes are toxic due to the presence of compounds like …………
a) mercury
b) cadmium
c) lead
d) all of these
Industrial wastes also contain acids such as
a) HCl
b) H2SO4
c) HNO3
d) all of these
