WorksheetsDay 69-Dec 3-worksheet-Btech-Physical quality of water
Total questions: 15
Worksheet time: 11mins
Which one of the following waters is aesthetically acceptable but not guaranteed to be free from harmful impurities?
Pure chemical water
Potable water
Palatable water
Wholesome water
The turbidity meter that works on scattering of light at 90° and measures 0–1 ppm is:
Jackson’s Turbidimeter
Baylis Turbidimeter
Hellige Turbidimeter
Nephelometer
Standard unit of colour is prepared using 1 mg of which substance?
Finely divided silica
Formazine
Platinum–cobalt compound
Potassium permanganate
Which instrument is used when turbidity exceeds 25 ppm and may go up to 1000 ppm?
Tintometer
Jackson Turbidimeter
Baylis Turbidimeter
Hellige Turbidimeter
Apparent colour is produced due to:
Only dissolved matter
Only suspended matter
Suspended + dissolved matter
Volatile matter
Conductivity of water is a function of:
Suspended solids
Dissolved gases
Total dissolved salts
True colour is measured after removing suspended matter by centrifugation. Choose True or False.
True
False
Impurities sized between 10−3 mm and 10−6 mm are called (a) .
Acceptable limit of turbidity as per IS 10500:2012 is (a) NTU.
Nephelometer measures scattered light at (a) °.
Colour in water is commonly measured using a ______.
tintometer
turbidimeter
pH meter
osmoscope
Jackson’s turbidity rod is used as a ________ test for turbidity.
field
laboratory
bench-scale
pilot-scale
The world reference temperature for water quality is (a) °C.
Formazine polymer is the standard reference used in (a) measurement.
Colour due to iron oxide appears _________, while colour due to manganese oxide appears _________.
(a)
