Brown spots in fabrics will be caused by washing with water containing large amount of___________________?

Related Mcqs:

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?

A. 102 B. 105 C. 109 D. 1015...

Presence of _____________ bacteria in water causes disease like typhoid?

A. Aerobic B. Pathogenic C. Anaerobic D. Non-pathogenic...

Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants ?

A. NOx B. Hg C. SO2 D. F...

Which is the most widely used coagulant for the treatment of turbid water ?

A. Alum (aluminium sulphate) B. Lime C. Ferric chloride D. Sodium aluminate...

Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?

A. Food industry B. Municipal sewage treatment C. Petroleum refinery D. Iron & steel plant...