1. In electrolysis, reduction takes place at:
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2. Which state of matter has particles vibrating at fixed positions?
3. Which change is irreversible?
4. Electroplating is used to:
5. Early humans first learned about materials mainly through:
6. Matter can change its state by changing:
7. An electrochemical cell converts chemical energy into:
8. The change of solid directly into gas is called:
9. The Daniell cell consists of zinc and copper electrodes placed in:
10. During dilution, the number of moles of solute:
11. Which quantity remains unchanged during dilution?
12. Which metal is commonly electroplated on iron to prevent rusting?
13. The particles of gas move:
14. Which form of matter has definite volume but variable shape?
15. Which property of matter can be measured?
16. The scientific method mainly involves:
17. What is the SI unit for amount of substance?
18. Which quantity is used to compare reactants in a balanced equation?
19. The unit of molarity is:
20. Atomic theory explains: