Tag: rules are for everyone
Questions Related to rules are for everyone
Which of the following countries does not depend on desalination process for getting fresh water?
-
Dubai
-
Iran
-
France
-
Qatar
The first rate pollution monitor are
-
molluscs
-
butterflies
-
honey bee
-
plants
Freshwater molluscs--snails and bivalves--have been used frequently as bioindicator organisms. With increasing needs for research on contaminant effects in freshwater ecosystems, this kind of biomonitoring is likely to develop further in the future. Molluscs can be used effectively for studies of both organic and inorganic contaminants; this review focuses on studies involving bioaccumulation and toxicity of metals. Two important advantages of snails and bivalves over most other freshwater organisms for biomonitoring research are their large size and limited mobility.
What is meant by root zone process?
-
A control measure to prevent water pollution
-
A process by which roots of plants are spread on the ground
-
A control measure to prevent soil pollution
-
None of these
Sedimentation is a
-
Primary water treatment
-
Secondary water treatment
-
Tertiary water treatment
-
Final process
Toxicity of chemical pollutant in water increases, with increase in
-
Waste
-
Water
-
Temperature
-
Air
-
True
-
False
-
Recycling, Renovation, Recharge and Reuse (4R concept) of waste water:
-
Cooling methods:
-
Using chemical methods:
BOD stands for
-
Biochemical oxygen demand
-
Chemical oxygen demand
-
Biological optimum demand
-
Biological oxygen demand
Biochemical oxygen demand (BOD) is the amount of dissolved oxygen required by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period. It is used to measure of the amount of organic waste in water.
Water pollution can be controlled by
-
Treating sewage or factory wastes to remove harmful organisms and compounds
-
Using biodegradable fertilizers and pesticides
-
Both A and B
-
Electrostatic precipitator
Water pollution is the increase in the concentration of the undesirable harmful compounds in the water resources. The water pollution can be controlled by many ways. The sewage and the factory wastes which contain the pollutants and high number of microbes can be treated before letting the water discharged into water bodies. Biodegradable form of fertilizers and pesticides can be used for the reduction of the soil and water pollution, and eutrophication.
Biological treatment of water pollution is done with the help of
-
Bacteria
-
Lichens
-
Fungi
-
Both A and C
Biological treatment of the waste water can be performed with the use of microbes. The bacteria and fungal cells are commonly used in the treatment of the water through activated sludge. Activated sludge refers to floc of microorganisms including bacterial cells and fungal filaments which are used in the process to break down organic matter into carbon dioxide, water, and other inorganic compounds and help in the clearing of the water.
Which of these methods is/are used to control water pollution?
(i) Preventing the release of factory wastes into nearby streams.
(ii) Educating society about the dangers of water pollution.
(iii) Using biological control in agricultural areas instead of using pesticides.
-
Only (i) and (ii)
-
Only (ii) and (iii)
-
Only (i) and (iii)
-
(i), (ii) and (iii)
The methods that can be used to control water pollution are:
(i) Avoiding the use of chemical substances freely.
(ii) Educating society about the dangers of water pollution.
(iii) Using biological control in agricultural areas instead of using pesticides.