Advertisements
Advertisements
प्रश्न
The cause of permanent hardness of water is due to
विकल्प
Ca(HCO3)2
Mg(HCO3)2
CaCl2
MgCO3
उत्तर
CaCl2
APPEARS IN
संबंधित प्रश्न
Water gas is
Assertion: Permanent hardness of water is removed by treatment with washing soda.
Reason: Washing soda reacts with soluble calcium and magnesium chlorides and sulphates in hard water to form insoluble carbonates.
The hardness of water can be determined by volumetrically using the reagent
Zeolite used to soften hardness of water is, hydrated ___________.
In solid ice, the oxygen atom is surrounded
Water is a _________.
What is a water-gas shift reaction?
A group-1 metal (A) which is present in common salt reacts with (B) to give compound (C) in which hydrogen is present in –1 oxidation state. (B) on reaction with a gas (C) to give universal solvent (D). The compound (D) on reacts with (A) to give (E), a strong base. Identify A, B, C, D and E. Explain the reactions.
