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Ozone is spread in the swimming pool bec...

Ozone is spread in the swimming pool because:

A

it acts as a disinfectant

B

it absorbs UV radiaitons

C

it is easily available from `O_(2)`

D

All of tha above

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The correct Answer is:
A
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Anahat is an eight year old girl who has just begun to learn swimming. At the moment she is in the swimming pool. Suddenly, Anahat finds that her earring has fallen into the water. It appears to her that the earring has not gone too deep. So, she begins to go further into swimming pool to retrieve her earring. Her trainer, who has been watching her movements, does not allow Anahat to go further and pulls her out of the swimming pool quickly. (a) Why does it appear to Anahat that her earring has not gone too deep in water ? Name the phenomenon involved. (b) Why does the trainer not allow Anahat to go further in the swimming pool ? (c) Give one example of the effect of phenomenon involved in the above episode in which a glass slab is used. (d) What values does the trainer show in the above episode ?

A swimming pool 70 m long, 44 m wide and 3 m deep is filled by water flowing from a pipe at the rate of 30,800 cm^(3) per second. The time taken to fill the swimming pool is:

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The length of a rectangular plot of land is twice its breadth. A square swimming pool of side 8 m, occupies one-eighth part of the plot. The length of the plot is:

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ARIHANT NEET-ENVIRONMENTAL ISSUES-Chapter exercises ( C) Medical entrances gallery (Collection of Questions Asked in NEET & in Various Medical Entrance Exams)
  1. Some effect of sulphur dioxide and its transformation products on plan...

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  2. Which is the main cause for the extinction of some species in tropical...

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  3. Ozone is spread in the swimming pool because:

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  4. Photochemical smog does not contain

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  5. Eutrophication is the result of:

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  6. According to Kyoto protocol the major nations abide to reduce concentr...

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  7. Which step is required for better survival of human beings

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  8. In acid rain, SO(2) accounts for :

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  9. Rain is called acid rain, when its pH is below

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  10. Bhopal gas tragedy was caused by

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  11. Pollution caused by persistent pesticides is relatively more dangerous...

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  12. Which of the following are the indicators of pollution ?

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  13. Common indicator organism of water pollution is

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  14. Lead concentration of blood is considered alarming at

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  15. Acid rain is caused by I. sulphur dioxide II. Hydrogen chloride ...

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  16. Ozone depletion in stratosphere would result in

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  17. A lake with an inflow of domestic sewage rich in organic waste may res...

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  18. In which one of the following the BOD (Biochemical Oxygen Demand) of s...

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  19. In a coal-fired power plant, electrostatic precipitators are installed...

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  20. Which one of the following is no bioindicator of water pollution?

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