Atoms and Molecule
According to the Dalton's atomic theory all matter is made of tiny particles called ________.
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Cathode rays are:
The percentage of sulphur in sulphuric acid is :
Molar mass of C2H4 is:
Select the relation between atomic number, mass number and number of neutrons.
The isotopes contain the same number of____ and different number of______.
The number of electrons present in M shell of chlorine is:
The mass of 3.0115×1023 molecules of chlorine is:
Calculate the mass of water which contains the same number of molecules as are contained in 60 g of oxygen.