Name the salt which causes temporary hardness of water.

What is temporary hardness of water?

The salts which make water hard are

What is the chemical used in Clarke's proceststo remove temporary hardness of water?

Which of the substances present in water cause permanent hardness of water ?

Salt A commonly used in bakery products on heating gets converted into another salt B which itself is used for removal of hardness of water and a gas C is evolved. The gas C when passed through lime water, turns it milky. Identify A, B and C.

Name the pathogen which causes malignant malaria.

(a) Complete the following equations : (i) nCH_(2) = CH_(2) rightarrow……….. (ii) CH_(3)COOH - NaHCO_(3)rightarrow …….+……+……. (b) What is the cause of hardness of water? Why soap does not form lather with hard water? Mention the disadvantage of cleaning clothes with soap in hard water?

The reagent commonly used to determine hardness of water titrimetrically is