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Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in Correct Answer All of the above

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Availability of drinking water is continuously decreasing. The government decided to identify those sources of drinking water which getting polluted. The following table depicts the number of polluted sources in a district. Source of drinking water getting polluted Number Wells 24 Handpump 12 Dam 12 Borewell 6 Ponds 18 The pictograph table for the above table will be (A) Source of drinking water getting polluted Number symbol = 6 source Wells Handpump Dam Borewell Ponds (B) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds (C) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds (D) Source of drinking water getting polluted Number symbol  = 6 source Wells Handpump Dam Borewell Ponds
Aerobic biological oxidation ponds used for the purification of polluted water
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All stools are round. Some mountains are round. Some ponds are mountains. All ponds are square. Conclusions: I. Some ponds are round. II. Some mountains are square. III. Some ponds are both mountains and round. IV. Some stools are square.
Statement : A mass mortality of shrimps in ponds on entire Andhra coast has recently been reported due to the presence of a virus.

Courses of Action :
I. The water of the ponds affected should immediately be treated for identifying the nature of the virus.
II. The catching of shrimps from the ponds should temporarily be stopped.
III. The fishermen should be asked to watch for the onset of such phenomenon in nature.
Consider the following statement
1. A bacterial food intoxication refers to food borne illnesses caused by the presence of a bacterial toxin formed in the food.
2. A bacterial food infection refers to food borne illnesses caused by the entrance of bacteria into the body through ingestion of contaminated foods and the reaction of the body to their presence or to their metabolites.
Which of the statements given above is/are correct?
Biological oxidation ponds remove organic matters present in the polluted water by
A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :
There is a paragraph in class V EVS textbook based on AI-Biruni's observation of construction of ponds in India some thousand years ago. What would be the purpose of including this paragraph? a. It helps learners to identify sources of history. b. It helps learners to improve their recording of observations. c. It helps learners to appreciate technology present in India some 1000 years back. d. It helps learners to appreciate the role of evidence in history.
Two statements are followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they do not conform to real-world knowledge, decide which of the conclusion(s) logically follows from the statements. Statements: All ponds are pools. Some wells are ponds. Conclusions: I. Some ponds are not wells. II. Some wells are pools. III. All pools are wells.
Consider the following statements regarding waste stabilization ponds: 1. The pond has a symbiotic process of waste stabilization through algae on one hand and bacteria on the other 2. The oxygen in the pond is provided by algae through photosynthesis 3. The detention period is of the order of two to three days 4. The bacteria which develop in the pond are aerobic Which of the above statements are correct?