Challenger App
Home
Exams
Questions
Quiz
Notes
Blog
Contact Us
e-Book
×
Home
Exams
▼
Questions
Quiz
Notes
Blog
Contact Us
e-Book
Home
/
Questions
/
Irrigation and environmental engineering
/
Water quality control standards
No.1 PSC Learning App
★
★
★
★
★
1M+ Downloads
Get App
Humidity is measured by:
A
Hydrometer
B
Hygrometer
C
Hyetometer
D
Anemometer
Answer:
B. Hygrometer
Related Questions:
Potassium permanganate is used in water for make it
Temporary hardness is due to the presence of :
Odour is meonused in terms of:
If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D of the sewage is:
If the methyl orange alkalinity of water equals or exceed total hardness, all of the hardness is