Two elements which can form a large number of compounds are
1). Carbon and Hydrogen
2). Carbon and Nitrogen
3). Carbon and Oxygen
4). Carbon and Sulphur
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1. Aluminium salt commonly used to stop bleeding is
2. If water smells bad, then that odour can be removed by adding
3. The metal chiefly used for galvanising iron is
4. The material known in commerce as Terylene is a
5. Which of the following is used as a lubricant in heavy machines?
6. Which of the following is used to denature ethanol ?
7. German silver is an alloy of
8. The total energy of revolving electron in an atom