1. Which one of the following is not true about plaster of Paris?
2. Which of the following metals makes more positively charged ions?
3. Chalk and marble are different forms of
4. What is the chemical name of CaO?
5. . . . . . . . . is the chemical name of slaked lime.
6. What is stainless steel?
7. Which of the following metals cannot be extracted by the carbon reduction process?
8. The process of forming a thick oxide layer of aluminium oxide on the surface of aluminium so as to protect it from corrosion is called:
9. Which one of the following is the correct sequence of the given substances in the decreasing order of their densities?
10. What will be the gas produced in the reaction of sodium carbonate with hydrochloric acid?
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