why the pH scale range is 0-14?
Why is salt thrown on the frozen road ?
How is hardness of water caused?
What is Molecular Formula ?
Why does the filament of an electric lamp glow, when current passes through it ?
Which is the best conductor of electricity?
Why does a rose appear black when the light of any other colour except red is made to fall on it ?
Write the equation of photosynthesis?
What test will you use to distinguish cotton from wool ?
Which wavelengths are visible to human eye?
Explain the Conversion of atmospheric Nitrogen to plant ?
Mention the formula to calculate ph of a solution?
What are the advantages of conductometric titration over visual or potentiometric titration?