Bio-degradable detergents ___________________?

Related Mcqs:

Presence of carbonaceous matter in the sewage____________________?

A. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures B. Reduces sulphate ions to sulphides causing obnoxious smell C. Increases the quantity of chlorine used for its purification D. All A, B. and C....

A mixture of chlorine & sodium bromide acts as a/an_________________?

A. Insecticides B. Analgesic drug C. Fire retardant D. Hydrogenation catalyst...

In Kraft process of paper manufacture, white cooking liquor consists of caustic soda________________?

A. Sodium sulphide & sodium carbonate B. Sodium sulphite & sodium carbonate C. Sodium sulphite & sodium sulphide D. None of these...

The chamber process is______________________?

A. Preferred over contact process for producing 98 to 100% H2SO4 and various oleums B. Non-catalytic and operates only on pyrites C. A batch process for directly producing high strength (98 to 100%) H2SO4 D. None of these...

Which of the following coals has the highest calorific value ?

A. Lignite B. Sub-bituminous C. Anthracite D. Peat...