What is mole?
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Explain about Atomic Weight ?
Explain the Element?
pH is having unit?
Why do woolen clothes keep us warm in winter ?
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Explain the difference between the Metals and Metallurgy ?
When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason????????? When a cool glass rod is suudenly heatd, it cracks. Why?????????
Which is the main constituent in air ?
What is the reaction that occurs between iodine and sodium thiosulphate?
When carbon is made to burn in an atmosphere of oxygen, what is produced ?
What is determining factor in the oxidation reduction reaction?
Explain the Electronic Theory of Valency?
How many elements have been discovered ?