0
A) > 50 ppm of lead
B) > 50 ppm of chloride
C) > 50 ppm of nitrate
D) > 100 ppm of sulphate
Correct Answer: C
Please Wait you are being redirected....
You need to login to perform this action.You will be redirected in 3 sec
OTP has been sent to your mobile number and is valid for one hour
Your mobile number is verified.