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.
VidyaDaan is a program of the nation, for the nation and by the nation to ensure continuity of quality learning initiated by the DIKSHA platform is rela...
Beti Bachao Beti Padhao Scheme was launched in January 2015 with the aim to address sex selective abortion and the declining child sex ratio, it is an ...
When was the Sarva Shiksha Abhiyan (SSA) launched by the Government of India?
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Which government ministry introduced the PM Vishwakarma scheme aimed at offering comprehensive assistance to artisans and craftspeople?
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Consider the following statements:
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Consider the following statements in regards to Budget 2023-24 (Education Sector):
1. Funds allocated Rs 1.13-lakh crore for the education sector...
Consider the following statements in regards to PRAGATI Scheme for scholarship:
1. It has been launched by the MHRD from the year 2014-15 and imp...
