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📘 SCIENCE
CHEMISTRY | Metals & Non-Metals-C
📝 Questions: 50
⏱️ Timer: 20 min
Q1. In displacement reactions, a more reactive metal:
Q2. At ordinary temperature, magnesium is protected from further oxidation by:
Q3. Which metals do not react with water at all?
Q4. During anodising, aluminium article is made the:
Q5. In sodium-water reaction, hydrogen gas:
Q6. A metal above hydrogen in reactivity series can:
Q7. Metal oxides soluble in water form:
Q8. Aluminium reacts with steam to form:
Q9. The reactivity order with dilute acids is:
Q10. The metal that catches fire immediately when exposed to air is:
Q11. Metals like lead and copper do not react with water because they are:
Q12. The electrolyte used in anodising aluminium is:
Q13. The oxide layer on aluminium:
Q14. Which metals do not react with oxygen even at high temperature?
Q15. The least reactive metal in the reactivity series is:
Q16. Anodising produces a:
Q17. The reactivity series arranges metals in:
Q18. Iron filings burn vigorously because:
Q19. Sodium hydroxide is formed when sodium reacts with:
Q20. Magnesium does not react with cold water because:
Q21. The oxide layer formed during anodising:
Q22. When copper is heated in air, it gets coated with:
Q23. The most reactive metal in the reactivity series is:
Q24. Nitric acid does not produce hydrogen gas because it is:
Q25. Aluminium, iron and zinc react with:
Q26. Magnesium is less reactive than sodium because:
Q27. Metals reacting with water generally produce:
Q28. Sodium and potassium are not used in acid reaction experiments because they:
Q29. The fastest rate of bubble formation with dilute HCl was seen in:
Q30. Metals react with acids to produce:
Q31. Calcium starts floating on water because:
Q32. The black coating on copper after heating is:
Q33. Copper does not react with dilute HCl because:
Q34. Aqua regia is a mixture of:
Q35. Aqua regia can dissolve:
Q36. The reactivity of metals was compared using reactions with:
Q37. Sodium reacts violently with cold water because the reaction is:
Q38. Calcium reacts with water to form:
Q39. The ratio of HCl to HNO₃ in aqua regia is:
Q40. Sodium and potassium catch fire in open air because they:
Q41. Burning metals in oxygen does NOT help in deciding reactivity order of:
Q42. Potassium and sodium are kept immersed in kerosene oil to:
Q43. The most exothermic reaction with dilute HCl occurs with:
Q44. Anodising is related to:
Q45. Magnesium reacts with:
Q46. Iron displaces copper from:
Q47. Oxygen evolved during anodising reacts with aluminium to form:
Q48. Displacement reactions give better evidence of:
Q49. Hydrogen is placed in the reactivity series because:
Q50. Which metals evolve hydrogen with very dilute nitric acid?
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