Stainless steel is very useful material ...

Stainless steel is very useful material for our life. In stainless steeel, iron is mixed with

Ni and Cr

Cu and Cr

Ni and Cu

Cu and Au

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Properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to get a homogeneous solution. These are called colligative properties. Applications of colligative properties are very useful in day-to-day life One of its examples is the use of ethylene glycol and water mixture as an anti-freezing liquid in the radiator of automobiles.A solution M is prepared by mixing ethanol and water. The mole fraction of ethanol in the mixture is 0.9.Given: Freezing point depression constant of water (Kfwater)=1.86Kkgmol−1Freezing point depression constant of ethanol(Kfethanol)=2.0Kkgmol−1 Boiling point elevation constant of water(Kbwater)=0.52Kkgmol−1 Boiling point elevation constant of ethanol (Kbethanol)=1.2Kkgmol−1 Standard freezing point of water =273K Standard freezing point of ethanol =155.7K Standard boiling point of water =373K Standard boiling point of ethanol =351.5K Vapour pressure of pure water =32.8mmHg Vapour pressure of pure ethanol =40mmHg Molecular weight of water =18gmol−1 Molecular weight of ethanol =46gmol−1 In answering the following questions, consider the solutions to be ideal dilute solutions and solutes to be non-volatile and non-dissociative. Water is added to the solution M such that the mole faraction of water in the solution becomes 0.9. the boiling point of this solution is

Stainless steel cooking pans are preferred with extra copper bottom. Why?

MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE

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