Bissoy.com
Doctors Medicines MCQs Q&A

The temporary hardness of water can be removed by

The temporary hardness of water can be removed by Correct Answer Boiling

Temporary hard water contains slightly soluble calcium bicarbonate, and this can be easily removed by boiling.  On the other hand, permanent hardness is caused by dissolved calcium sulphate (which is not removed by boiling). The permanent hardness is removed by chemical treatment.

Related Questions

Given below are three quantities named A, B and C. Based on the given information, determine the relation among the three quantities. Quantity A∶  A 30 litre mixture of wine and water has wine and water in the ratio 5∶ 7. How much water must be drawn off so that the ratio of wine and water becomes 25∶ 19? Quantity B∶ A 35 litre mixture of wine and water has wine and water in the ratio 1∶ 3. How much water must be drawn off so that the ratio of wine and water becomes 1.75∶ 3.35? Quantity C∶ A 27 litre mixture of wine and water has wine and water in the ratio 3∶ 2. How much water must be drawn off so that the ratio of wine and water becomes 81∶ 11?
Which of the following tests are microhardness tests? P. Brinell Hardness Q. Rockwell Hardness R. Knoop Hardness S. Vickers Hardness
About 40 million people (over 75% are children) are affected by water borne diseases every year. Nearly six million children below 14 years of age suffer from fluorosis due to fluoride contamination in water. Arsenic is another dangerous contaminant in ground water, putting at risk more than 10 million people in the country. Bacteriological contamination, which leads to diarrhea, cholera, hepatitis etc., is at alert level in India. Contamination due to Iron, hardness and salinity in water are other major concern. Medical expenditure on water borne diseases is estimated to be Rs. 2400 crores annually in the country. The need for desalination and water purification is destined to grow in the coming years as the requirement for water increases. Bhabha Atomic Research Centre (BARC) has been engaged in R&D on desalination and water purification technologies for several years and has developed indigenous technologies which are available for know-how transfer to interested parties The given information, if accurate, most accurately supports which statement?
You are the administrator of a Windows 2000 Server computer that has one hard disk. This computer runs a custom application that writes a large number of small temporary files in a single directory to support request from client computers. To improve performance of the application, you add three new 100-GB SCSI disks to the server to hold these temporary files. You want to ensure that the application can use all 300 GB of space with a single drive letter. You also want to ensure the fastest possible performance when writing the temporary files. How should you configure the three disks?
Consider the following statements regarding removal of impurities from water: 1. Settleable solids are removed by filtration. 2. Volatile solids are removed through sedimentation. 3. Dissolved solids are removed through reverse osmosis. 4. Colloidal solids are removed by coagulation. Which of the above statements are correct?
Bottled water is drinking water (e.g., well water, distilled water, mineral water, or spring water) packaged in PET Bottle or Glass Water Bottles. Bottled water is comprehensively regulated by the U.S. Food and Drug Administration (FDA) as a packaged food product. By law, the FDA regulations for bottled water must be at least as stringent as the Environmental Protection Agency standards for tap water. What inference can be drawn from the above passage?
Temporary hardness of water can be removed by
The hardness of 1000 litres of a water sample was removed by passing it through a zeolite softener which required 30litres of NaCl solution containing 1.5 gm/L NaCl for regeneration. The hardness of the water sample will be ___________
Presence of __________ hardness is responsible for the temporary hardness in water.
The ratio of temporary employees and Permanent employees in test book is 8 ∶ 3.The ratio of male employees to female employees is 7 ∶ 4.It is also observed that 60% of the temporary employees are males. If there are 48 permanent female employees, what is the difference between male temporary employees and female permanent employees.