Question

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Answer 1

28) molten sodium absorbs heat generated by nuclear fission

29) Ca2(PO4)2

30) option B

31) B) CaCl2 -> laboratory dedicator is used to preserve moisture sensitive items

32) option D

33) Al4C3

34) Option A

35) Option B

See solubility is directly proportional to polarizing power of ion which is again directly proportional to charge on the ion -------(1)

If we compare the ions of different groups then above rule is followed I.e. (1)

Also solubility is inversely proportional to size of ion---------(2)

So if we compare the ions of same group then

Rule (2) is followed

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Answer 2

Answer:

28. slow down the fast neutrons

29. Ca(H2PO4)2

30. Lithium is much softer than the other I group metals

31. CaCl2

32. CaCO3, NaHCO3, KHCO3

33. Al4C3

34. Na2O, NaOH, Na2CO3

35. BeH2

Explanation:

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