Which is the main constituent in air ?
Importance of Organic Chemistry to Mankind ?
Explain the Solution ?
Why does a pond of clear water appear less deep than it really is?
What forms the basis for colorimetric determination?
What is the safety curtain in cinema or theatre made off ?
Why is an echo not heard in a small room ?
Explain the Chemical change?
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 is kentchin?
Why are substances like caustic soda and calcium chloride called hygroscopic substances ?
Is water element or compound ?
How is measurement of ph made?