How many electrons does benzene have?
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how to do heavy metal test for colour sample?
Why does a white paper appear white, when light is not to fall on it ?
State beer-lambert’s law.
We see the sun before it rises above the horizon in the morning. Why?
Why is ammonia solution added while preparing edta solution?
What makes a molecule into organic molecule?
Which element is nether a solid nor a liquid?
Give the principle of potentiometer titration.
Which is the hottest part of a flame ?
When carbon is made to burn in an atmosphere of oxygen, what is produced ?
Which gas is used, in laboratories etc. for burners ?
What is colorimetry?