Hardness of water is due to the presence of:
Permanent hardness in water is hardness due to the presence of the chlorides, nitrates and sulphates of calcium and magnesium, which will not be precipitated by boiling. The lime scale can build up on the inside of the pipe restricting the flow of water or causing a blockage.
Antioxidants are added to food:
Soap containing sodium salt is obtained by heating NaOH with:
Which one of the following is the first popular artificial sweeteners?
Which one of the following soaps are soft to the skin?
Which among the following is an artificial sweetening agent?
Vegetable oil is a type of:
Which of the following is the residual product in the formation of soap?
When stearic acid reacts with polyethylene glycol what type of detergent is formed?
Neurologically active drugs are