What is the safety curtain in cinema or theatre made off ?
who invented the first projector?
Why does a pond of clear water appear less deep than it really is?
Explain the Compound?
What is kentchin? Is it real? As much info on it as possible.
Why be is not soluble in liquid ammonia?
What is weak acid?
What are the electrodes used in potentiometer titration?
Why do we hear thunder after seeing a flash of lightning ?
State beer’s law.
What is the composition of bronze ?
Explain about Atomic Weight ?
How many electrons does benzene have?