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Hardness of water is due to calcium and magnesium ions. Sodium salts dissolve in water and hence lather is formed. When soap is added to hard water, calcium and magnesium ions replaces sodium (or potassium) ions in the soap and gets precipitated hence lather formation is hindered. Thus, this method can be employed to test the hardness of water.
In which of the following country 19th Asian Games will be held?
The 'Right to Work' plan, under the National Rural Employment Guarantee Act, 2005, was implemented in how many districts in the first phase?
Bihar Diwas is celebrated on___________
“Mundari” Dance is associated with which state?
Kalidas Samman Award has been instituted by which state government?
India is a part of which among the following given below?
As of April 26, 2023, how many cumulative enrolments have been achieved under the Pradhan Mantri Jeevan Jyoti Bima Yojana (PMJJBY)?
As per the recommendation of Internal Working Group headed by PK Mohanty, how much should be the minimum paid up capital of a Small Finance Bank?
The breaking up and decay of exposed rocks by temperature changes, frost action, plants, animals and human activity is called:
In which year was the Doppler effect discovered by Austrian scientist Christian Doppler, that describes the change in frequency of any kind of sound or...
