The hardness of water is due to the pres- ence of which salts?

The hardness of water is due to the pres-
ence of which salts?
by

1 Answer

Answer :

calcium and magnesium salts
by

Related questions

Permanent hardness of water is due to the presence of which salts

Description : Permanent hardness of water is due to the presence of which salts

Last Answer : Chlorides and sulphates of Calcium & Magne- sium

Temporary hardness of water is due to the presence of which salts?

Description : Temporary hardness of water is due to the presence of which salts?

Last Answer : Bicarbonates of Calcium & Magnesium

One degree of hardness of water means a content of salts of (A) 10.25 mg/litre (B) 12.25 mg/litre (C) 14.25 mg/litre (D) 16.25 mg/litre

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Last Answer : (C) 14.25 mg/litre 

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According to Dalton’s law, the total pres sure of the mixture of gases is equal to  (a) greater of the partial pressures of all  (b) average of the partial pressures of all  (c) sum of the partial pressures of all  (d) sum of the partial pressures of all divided by average molecular weight  (e) atmospheric pressure.

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Permanent hardness of water is due to the presence of?

Description : Permanent hardness of water is due to the presence of?

Last Answer : sulphates and chlorides of calcium and magne- sium

Permanent hardness of water is due to the presence of?

Description : Permanent hardness of water is due to the presence of?

Last Answer : bicarbonates of calcium and magnesium

Temporary hardness of water is due to the presence of?

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What is the hardness of water due to?

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Last Answer : The hardness of water is due to some chemicals that get. Dissolved in rain water when it falls.

Temporary hardness of water is due to the presence of which thing? -General Knowledge

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Last Answer : The answer is 'Magnesiumbicarbonate '

Temporary hardness of water is due to the presence of which thing? -General Knowledge

Description : Temporary hardness of water is due to the presence of which thing? -General Knowledge

Last Answer : answer:

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Last Answer : answer:

The temporary hardness of water is due to :

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Green potato tuber is inedible due to: a. Carcinogenic b. Hardness c. Hollowness d. None of above

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Consider the following statements: 1. Carbonate hardness is due to bicarbonates. 2. Non-carbonate hardness is due to sulphates and chlorides of Ca and Mg. 3. Both the hardnesses can be removed by lime-soda method. 4. Both the hardnesses can be removed by ion-exchange method. Which of these statements are correct? (a) 1, 2 & 3 only (b) 1, 2 & 4 only (c) 2, 3 & 4 only (d) 1, 2, 3 & 4

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All the following statements about obstructive jaundice are true except (A) Prothrombin time may be prolonged due to impaired absorption of vitamin K (B) Serum alkaline phosphatase may be raised due to increased release of the enzyme from liver cells (C) Bile salts may enter systemic circulation due to biliary obstruction (D) There is no defect in conjugation of bilirubin

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Benedict’s test is less likely to give weakly positive results with concentrated urine due to the action of (A) Urea (B) Uric acid (C) Ammonium salts (D) Phosphates

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Write the chemical name and chemical formula of the salt used to remove permanent hardness of water. -Science

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Last Answer : Sodium carbonate, Na2CO3, is also known as washing soda. It can remove temporary and permanent hardness from water.

Permanent hardness of water cannot be removed by (a) Boiling (b) Adding caustic soda (c) Distillation (d) Adding soda

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The method that cannot be used for re- moving permanent hardness of water is?

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Last Answer : boiling

Permanent hardness of water can be re- moved by adding?

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Last Answer : sodium carbonate or by distillation or by ex- change method

Temporary hardness of water can be re- moved by?

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Last Answer : repeated boiling or adding lime

The compound of silicon used in removing hardness of water is

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Last Answer : Zeolite.

Salt A commonly used in bakery products on heating gets converted into another salt B which itself is used for removal the 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. (a) A is sodium hydrogen carbonate ,B is hydrous sodium carbonate and c is carbon dioxide (b)A is sodium carbonate ,B is sodium hydrogen carbonate and c is Carbon monoxide © A is baking soda ,B is washing soda and C is carbon dioxide (d) both a and c

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The salt which is used to remove the hardness of water is (A) NaOH (B)Baking Soda (C) Bleaching powder (D) All of these

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