What are hard waters?
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What is the formula you will use to calculate how many millilitres of 5.5 m naoh are required to prepare 400 ml of 1.5m naoh?
What are the advantages of soapy detergents over soapless
Which wavelengths are visible to human eye?
What are the names of the three different rays emitted by radioactive substances ?
How is hardness of water caused?
Why is the bottom of a kettle blackened and top polished?
Explain the Mixture?
what is the indicator used?
What is the unit of conductance?
Explain the Stable configuration?
Explain the Electronic Theory of Valency?
In winter, on a cold morning, the cement feels colder to the foot than a carpet. Why ?