Why metallic tools used by blacksmiths have wooden handles ?
What is wave number?
From which substance are the dues manufactured ?
Is water element or compound ?
Which halogen element is used in halogen light?
What is pka of acid?
What general group of organic compounds are not oxidesied in the cod test?
Explain how buffer works?
Why does water boil above 100 o C in mines ?
Explain the Molecule?
Why is the percentage of oxygen today the same as it was thousands years ago, even though the whole world inhals it?
State beer-lambert’s law.
When the heat rays from the sun area focused on a piece of black cloth by means of a lens, the cloth catches fire. Why ?