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Related Questions

Which of the following statement(s) is/are correct?
1. If sodium carbonate and washing soda is mixed in water the hardness of water can be removed.
2. The reaction of the chemicals produce sodium sulphate, sodium carbonate and insoluble calcium carbonate.
3. Magnesium sulphate chloride and magnesium carbonate is also produced.
Select the correct answer
1. A student fitted the required apparatus to collect carbondioxide in the gas jars. 2. The student took out some substance from the bottle labelled calcium carbonate and put it in the woulfe's bottle. 3. Then the student poured some from the bottle labelled dilute hydrochloric acid on the calcium carbonate contained in the woulfe's bottle. 4. considering the above mentioned facts maximum how many hypotheses are possible relating to the causes of non-collection of the gas in the gas jar?
A rotary drum filter with 30% submergence is used to filter concentrated aqueous slurry of calcium carbonate containing 15lb of solids per cubic foot of water. The pressure–drop is 2011Hg. If the filter cake contains 50% mixture (wet basis), calculate the filter area required to filter 10 gal/min of slurry. The filter cycle time is 5 min. The specific cake resistance depends on the pressure–drop as: α (ft/lb) = α (Δp)0.26, where α = 2.90×1010 Viscosity of the filtrate = 6.72×10-4 lb/ft-s. Density of calcium carbonate = 168.8 lb/ft3. Neglect filter medium resistance.
When 10 g of calcium carbonate is decomposed completely, then 5.6 g of calcium oxide is formed along with the generation of carbon dioxide. Mass of the carbon dioxide formed is: 
Calcium hydroxide has a neutralizing value (calcium carbonate equivalent) of . . . . . . . .
On providing heat, the decomposition of calcium carbonate into calcium oxide and carbon di-oxide, is example of . . . . . . . .?
Which of the following are characteristics/properties of permanent hardness in water? (A) Presence of bicarbonates of calcium and magnesium (B) Presence of sulphates of calcium and magnesium (C) Forms good lather when comes in contact with soap (D) Presence of chloride of calcium and magnesium (E) Can be removed by boiling the water Choose the correct answer from the options given below :
Which one of the following is not a form of Calcium Carbonate?
Which of the following is a form of calcium carbonate?
Which of the following statements are true about washing soda? 1. Its chemical name is sodium hydrogen carbonate and its aqueous solution is basic in nature. 2. Its chemical name is sodium carbonate and the pH of its aqueous solution is more than 7. 3. It is used for raising of cakes while baking. 4. It is used for the removal of permanent hardness of water. Select the correct answer using the code given below: