What variety of carbon is used for refining purposes ?
Why is Davy Lamp called a Safety Lamp ?
What is chemical oxygen demand?
what is ppm?how to prepare 75 ppm?
Give the others form of iron ore.
Why are silver tea pots made with the handles of ebony ?
Explain the Modes of valency ?
What is phase transfer catalyst?
What are constituents of brass?
Cholesterol is a compound suspected of causing hardening of the arteries. The formula of cholesterol is C27H46O. a. A sample of cholesterol is isolated from the arterial lining of a 60-year-old American male. What is the formula of this compound? b. Cholesterol is extracted from a chicken’s egg. What is the formula of this compound?
What test will you use to distinguish cotton from wool ?
What is mole?
At what temperature does mercury freeze ?