- Which of the following rivers is called world’s polluted river?
| Ganga river | Chenab river | Cauvery river | Yamuna river | Answer; a-ganga river |
- Which of the following are the primary causes of water pollution?
| a-plants | b- animals | c- human activities | None of these | answer; c- human activities |
- Which of the following techniques is used for reducing the total dissolved solids in the water?
| osmosis | ion exchange | distilation | both b and c | Answer; d-both b and c |
- which of the following is mainaly responsible for the cause of water pollution?
| afforestaion | oil refineries | paper factories | both b and c | Answer; d- both b and c |
| a-perfumes | b-refrigerators | c-air conditioners | all of the aboves | Answer; d- all of the aboves |
- chloroflorocarbons are nonflame chemicals mainly used in——-?
- What is the health effects of excess fluoride in drinking water ?
| Flourosis | toothaches | lung disease | intestinal infectio | Answer; a- f;ourosis |
- which of the following are water bone disease?
| a-typhoid | b- cholera | c-diarrhoea | all of the aboves | Answer; d- all of the aboves |
- The main sources of arsenic in water are————?
| floods | fertilizers | industrial waste | both b and c | Answer; d- both b and c |
- which of the following is not a waterborne disease?
| measles | typhoid | cholera | d-hepatitis | Answer; a- measles |
- which of the following is the leading cause of death and diseases worldwide?
| Water pollution | Radioactive pollution | Air pollution | Soil pollution | Answer; a- water pollution |
11-which of the following is an indicator of organic water pollution?
| a-BOD | b- PH | c-salinity | d-eutrophication | Answer; a- BOD |
12-types of water pollution are ?
| Sewage | Sediment pollution | Inorganic nutrients | d-all of these | Answer; d- all of these |
13- clear water that support small population are caused ?
| eutrophic | oligotrophic | sedimental pollution | sewage dlains | Answer b- oligotrophic |
14- sewage eutrophication caused?
| Slow floating steam | Sewage runoff | Due to fertilizers | All of these | Answer; d- all of these |
15- excessive amount of suspended soil particals——?
| Water pollution | Sediment pollution | Air pollution | None of these | Answer; b- sediment pollution |
16- industries generates different pollutant like——
| BOD | Toxic components | Toxic metals | All of these | Anwer; d- all of these |
17- streams and rivers are mainly polluted by ————?
| agriculture | industries | pesticides | ground water | Answer; a- agriculture |
18- how many types of metals —–?
| 4 | 3 | 2 | 1 | Answer ; c- 2 |
19- heated water produced during industries processes is released into waterways?
| Thermal pollution | Water pollution | Soil pollution | Air pollution | Answer; a- thermal pollution |
20- minarate incident in jappan caused by toxification of ?
| lead | cadmiam | mercury | zinc | Answer; c- mercury |
