Which gas used for purifying, air in underground enterprises ?
Differentiate between modern periodic table and mendeleevs table?
How is hardness of water caused?
What is the unit of conductance?
What is the limitation of cod?
Explain the Hybridigation?
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 Filtration ?
Explain the ANS Isotope?
Mention a few advantages of photoelectric colorimetric determination.
What is wave number?
Why is dew formed more readily on clear nights than on cloudy ones ?
What is the chemical composition of diamond ?