Permanent hardness of water may be removed by the addition of___________?

Related Mcqs:

1. Permanent hardness of water can be removed by adding __________?

   A. Chlorine B. Washing soda C. Bleaching powder D. None of these Submitted by: Fahad Mehsud...

2. Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ?

   A. Zeolites B. Sulphonides C. Lime D. Nitrates Submitted by: Rashid Mehmood...

3. Permanent hardness of water is due to the presence of __________?

   A. Sodium bicarbonate B. Calcium sulfate C. Calcium bicarbonate D. None of these Submitted by: Mirza Musawer Jamil...

4. Medium sized kidney stones are removed by__________?

   A. Dialysis B. Lithotripsy C. Excretion D. Laser Submitted by: Rashid Mehmood...

5. An adult have permanent teeth?

   A. 30 B. 40 C. 50 D. 32 Submitted by: Muhammad Asif Khajjak...

6. The salinity of sea water is determined by the amount of common salt (Sodium Chloride) in __________ of sea water.

   A. 1 gram B. 10 grams C. 1 kg D. 10 kg...

7. Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ________?

   A. Conduction B. Convection C. Radiation D. Reflection E. None of these...

8. Why are soft drink made with chilled water rather than water at room temperature?

   A. Ingredients dissolve better in chilled water B. Chilled water enhances the taste C. Chilled water attracts more carbon dioxide  D. Chilled water is more hygienic Submitted by: Ashfaque Ali Khoso...

9. For seeing objects at the surface of water from a submarine under water, the instrument used is ________?

   A. Periscope B. Telescope C. Kaleidoscope D. Spectroscope Submitted by: Rashid Mehmood...

10. Underground water and the water on the earth’s surface is called ?

    A. Mezosphere B. Ionosphere C. Hydrosphere D. None of these Submitted by: Haziq...