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Q. All isotopes of the same element have
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Q. Adding Cl2 to benzene in the presence of AlCl3 is an example of:
Q. The monomer of polythene is
Q. Gasoline is the name given to the same substance as
Q. Which among the following oxides cause the Acid rain ?
Q. Which among the following is a covalent compound ?
Q. A balloon filled with helium rises in air because
Q. Salts of which among the given elements provide colours to fireworks?
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