Aresenicosis is a disease caused by drinking water with high level of ………..
a) fluoride
b) arsenic
c) bromine
d) iodine
The symptoms of arsenic posing are………
a) vomiting
b) nausea
c) blood in urine
d) all of these
The WHO recommended limit of arsenic in drinking water is …………..
a) 0.1 mg/dm3
b) 0.01 mg/dm3
c) 0.0001 mg/dm3
d) 1 mg/dm3
Water which is prepared for special purpose is called treated water e.g………..
a) distilled water
b) chlorinated water of swimmingpool
c) drinking water
d) all of these
Water is stored in settling basin, treated with ………… to remove suspended impurities and dissolve solids.
a) calcium hydroxide
b) aluminum sulphate
c) both a & b
d) none of these
In the treated of water, water is passed through charcoal to remove ………..
a) color
b) odor
c) both a & b
d) taste
