Home
Earn $100 Online Daily. Work From Home. Click Here

What is the correct answer?

4

Permanent hardness of water is due to the presence of calcium & magnesium

A. Bi-carbonates

B. Sulphates & chlorides

C. Carbonate

D. None of these

Related Questions

Sucrose is a Fat splitting catalyst is Phenol formaldehyde resin is used as an adhesive in making Which of the following is not present in bagasse fibre? __________ are used as corrosion inhibitor for iron & steel in aqueous… Which of the following is not required in the manufacture of soda ash… Which of the following, when pyrolysed, produces Perchloroethylene? Which of the following is an organometallic compound? Grignard reagent is chemically known as Dechlorination of treated water is necessary to Pick out the correct statement. Hollander beater used during paper pulp manufacture does not facilitate… Kopper-Totzek coal gasifier Gun powder, which is an explosive comprises of charcoal, sulphur and Cumene (isopropyl benzene) is made by Chemical name of Grignard reagent is Oils and fats are converted to soap in a process called Silicone is a/an Stereospecific agents are exemplified by Starting material for the production of butadiene in India is Bleaching powder (chemically known as calcium chloro hypochlorite) is… In the manufacture of sulphuric acid from elemental sulphur, the following… Prussian blue is chemically represented by Conversion of SO2 to SO3 in Monsanto 4-pass converter is about __________… Nitrile rubber is produced by the polymerisation of Absorption of SO3 in 97% H2SO4 is Rosin soap is added during paper manufacture to __________ acid is the main constituent of cotton seed oil. Deaeration of water in its treatment is necessary, as it Tall oil obtained as a by-product from the black liquor recovery is