Who first discovered the every eighth element had properties similar to that of the first?
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Which of the following is NOT a waste material removed from blood in the kidney?
Which of the following statements about the reaction below are INCORRECT?
2Pb + C → 2Pb + CO2
A. Carbon di-oxide is getting, oxidisedB. Lead is getting reducedC. Carbon is oxidisedD. Lead oxide is getting reduced
Elements having same atomic numbers but different mass number are called ______.
Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?
The process of transferring of charge from a charged object to the earth is called ______________.
Generally covalently bonded molecules ______.
I. have high boiling and melting point as compare to ionically bonded molecules
II. poor conductors of electricity
III. have weak intermolecular force
Which of the following solutions is alkaline?
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