What variety of carbon is used for refining purposes ?
What is dextro-rotatory and levo-rotatory?
Why does a white paper appear white, when light is not to fall on it ?
Which wavelengths are visible to human eye?
What is Evaporation ?
How can fresh water be made from salt water ?
Why does a pond of clear water appear less deep than it really is?
Write the structural formula for edta.
Explain the following ? Isotope, Isobars, Stable configuration, Electronic Theory of Valency, Valency
Why is acetic acid added?
Why is dew formed more readily on clear nights than on cloudy ones ?
What is the role of silver sulphate?
What is mineral water?