Water day2, CH101

Which instrument is this

• Zeolite process

• Ion exchange resin

• Soda lime process

• None of these

Indicator used in determination of hardness of water

• Calcon

• EBT

• EDTA

• Both Calcon and EBT

temporary hardness is caused due to presence of

• HCO₃^-

• OH^-

• Cl^-

• None

permanent hardness is caused due to presence of

• CO₃^-2

• SO₄^-2

• Cl^-

• All

unit of hardness is

• ppm

• kg/l

• mg

• none