Select the correct statements.

Lamp black in water is passed in colloid state on addition of gum

White precipitate of

B a S O_{4}

on washing continuously with water gives

B a S O_{4}

solution

Electrodialysis is used to remove ionic impurities faster.

All are correct

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Text solutionVerified

All gums are soluble in water. When Lamp black in water is passed Gums in water get hydrolysed to yield a number of monosaccharides which are smaller in size. Thus, a colloidal sol is obtained. This is correct statement.

Formation of a white precipitate of

B a S O_{4}

that is insoluble in water but continuously washing with large amount of water gives

B a S O_{4}

solution. This is correct statement.

Electrodialysis has been studied worldwide for the separative removal of various contaminants, such as nitrate, bromide, sodium, zinc etc. This is also correct statement.

Therefore all are correct statements.

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