Q. The number of stages involved in the desalination using a multistage flash evaporator is _________________

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Q. Which of the following desalination method is more suitable for brackish water than sea water?

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Q. The process in which the brackish water is forced across a permeable membrane by mechanical forces is called as _____________

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Q. In which desalination process, the salt ions are removed from seawater by means of electric current?

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Q. In Electro-dialysis, the electric energy which required is _____________

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Q. The maximum salt concentration up to which desalination of brackish water is possible by Electro-dialysis is _____________

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Q. In which desalination process, the cooling of sea water is done to obtain fresh water?

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Q. The pressure freezing process works on the vacuum free vapor compression principle.

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Q. In which desalination process, solar energy is used?

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Q. The solar evaporation can yield about ___ kg of fresh water per day per m² of basin surface.

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Q. Aswan high dam is situated in

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Q. Due to the Aswan dam in Egypt, the countries cultivated area has been increased to

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Q. Which organism is the carrier of sleeping sickness disease?

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Q. Poor sanitation is an increasing problems of

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Q. Hot and wet climate are the best condition to grow

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