Q. Dilution=volume added/total volume. What does total volume indicate?

View solution

Q. Dilution factor is the reciprocal of dilution.

View solution

Q. _________ is a step-wise and geometric series of dilutions which starts with a small amount of starting material.

View solution

Q. Which of the following is commonly used?

View solution

Q. A dilution is a process that increases the concentration of a substance in a solution.

View solution

Q. Bacteria is diluted in __________

View solution

Q. What is the minimum amount of sample required to perform serial dilution?

View solution

Q. ___________ means that a substance can be converted into simpler compounds by biologically mediated reactions.

View solution

Q. Oxygen in water is consumed during aerobic biodegradation of organic compounds.

View solution

Q. The rate at which oxygen is dissolved into the water from the atmosphere is proportional to the deficit of oxygen in the water.

View solution

Q. What is endogenous respiration?

View solution

Q. When the deoxygenation rate exceeds the reoxygenation rate, the oxygen sag curve shows ________ in a deficit of oxygen.

View solution

Q. During which of the following conditions, the deoxygenation is equal to reoxygenation?

View solution

Q. Which one of the following is the basic indicator of river health?

View solution

Q. What is the minimum amount of DO required for the life survival of aquatic animals?

View solution

Q. Oxygen demanding wastes improves DO.

View solution

Q. In the concept of self purification of natural streams, complete the following phrase.
Solution to pollution is _________

View solution

Q. _________ is accomplished by the replenishment of oxygen lost to bacterial degradation of organic waste.

View solution

Q. On which of the following does the self purification process does not depend?

View solution

Q. Flowing water bodies recover rapidly.

View solution