2nd PUC Chemistry Series 5

PUC Science 2nd Year Chemistry Series-5 quiz

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2nd PUC Chemistry Series 5

TEST YOUR KNOWLEDGE OF SCIENCE

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41.  In the leaching of Ag2S with NaCN, a stream of air is also passed. It is because

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42. Purest form of iron is

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43. H2S is more acidic than H2O because

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44. The boiling points of hydrides of group 16 are in the order

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45. In the manufacture of sulphuric acid by contact process Tyndall box is used to

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46.  Fluorine differs from rest of the halogens in some of its properties. This is due to

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47. The set with correct order of acidity is

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48. When chlorine reacts with cold and dilute solution of sodium hydroxide, it forms

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49. The formation of O2+ [PtF6] is the basis for the formation of first xenon compound. This is because

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50. Partial hydrolysis of XeF4 gives

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