Question

Hello guys! please help me to solve the above MCQs ​

Answer 1

Answer:

21. B. Milk of Magnesia

22. B. Methanoic acid

23. C. Calcium Phosphate

24. B. Oxygen

25. A. Basic oxides

26. C. Blue-green dehydrate

27. A. Hydrogen

28. A. Calcium carbonate

29. A. Bases which are soluble in water are called alkalis.

30. B. Only 1, 2 and 3 are correct.

31. C. Mixing acid or base with water.

32. C. Because dry HCl gas does not ionize to produce H+ ions.

33. A. Tooth enamel

34. B. Acidic

35. A. Neutral

36. B. Brown

37. A. CaSO4.2H2O

38. CaSO4.1/2H2O