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All are heterogeneous mixture except:a.Bloodb.Milkc.Solutiond.SoilClear my choiceQuestion 19Not yet answeredMarked out of 1.00Flag questionQuestion textOne is not use useful effect of chemical change.a.Evaporationb.Rustingc.New substanced.PhotosynthesisClear my choiceQuestion 20Not yet answeredMarked out of 1.00Flag questionQuestion textAir is homogeneous mixture of non metals.a.Falseb.True

Question

All are heterogeneous mixture except:a.Bloodb.Milkc.Solutiond.SoilClear my choiceQuestion 19Not yet answeredMarked out of 1.00Flag questionQuestion textOne is not use useful effect of chemical change.a.Evaporationb.Rustingc.New substanced.PhotosynthesisClear my choiceQuestion 20Not yet answeredMarked out of 1.00Flag questionQuestion textAir is homogeneous mixture of non metals.a.Falseb.True

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Solution

Question 1: The correct answer is c. Solution. A solution is a homogeneous mixture, not a heterogeneous one.

Question 2: The correct answer is a. Evaporation. Evaporation is a physical change, not a chemical one.

Question 3: The correct answer is b. True. Air is a homogeneous mixture of non-metals.

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