The bacterias which require free oxygen for their survival, are called – McqOptions

MCQOPTIONS

1.	The bacterias which require free oxygen for their survival, are called
A.	Aerobic bacterias
B.	Anaerobic bacterias
C.	Facultative bacteria
D.	None of these
Answer» B. Anaerobic bacterias

Discussion

No Comment Found

Related MCQs

The formula = - [1.8 + 32] in which is runoff, is annual rain fall in cm, is mean annual temperature in centigrades and is a constant, is known
If is the weight of water per cubic metre, is the discharge in cubic metres per sec and is the total head, the required water horse power of the pump, is
If the specific capacity of a well is 0.3183 x 10 per sec, the discharge from a well of 4 m diameter under a depression head of 4 m, is
The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent
The U.C. (uniformity coefficient) for the best filter media sand should be
Derivation of Thiem's formula is based on the assumption
In an artesian acquifer, the draw downs in two observation wells at distances 100 m, and 200 m were found same after one hour and hours respectively. The value of , is
Disappearance of pink colour of water of a well due of KMnO indicates that water contains
To pump water from a water reservoir 3 m deep and maximum water level at 135 m, a pump is installed to lift water up to R.L. 175 m at a constant rate of 36, 00, 000 litres per hour. If the length of the pipe is 1506 m and = 0.01, ignoring other minor losses and assuming the economical diameter from Lea's formula = 1.2 , the water horse power of the pump is
Normal values of overflow rate for sedimentation tanks using coagulants in litres/hr/m , generally range between