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Surface Chemistry Test - 9

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Surface Chemistry Test - 9
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Which catalyst is used in contact process?

    Solution

    V2O5 is used as catalyst in contact process .

  • Question 2
    1 / -0

    Catalyst used in hydrogenation of vegetable oil is

    Solution

    Vegetable oil is unsaturated fats which are hydrogenated by using Nickel(Ni) as catalyst.

  • Question 3
    1 / -0

    The activity of the iron catalyst used in Haber’s process is adversely affected due to the presence of

    Solution

    CO act as a poison for Fe.

  • Question 4
    1 / -0

    The example of heteropolar solution is

    Solution

    Protein solution is an example of heteropolar solution.

  • Question 5
    1 / -0

    Which one of the following is an example of micelle system?

    Solution

    Soap have hydrophobic tails and hydrophilic heads so they can act as micelle.

  • Question 6
    1 / -0

    Metals like silver and copper can be obtained in the colloidal state by

    Solution

    Metal sols are prepared only by Bredig’s Arc method.

  • Question 7
    1 / -0

    Gelatine is often used as an ingredient in the manufacture of ice cream for

    Solution

    Gelatin is used as ingredient in manufacture of ice cream. It also gives soft texture and fresh appearance to the ice cream.

  • Question 8
    1 / -0

    Artificial smoke screens used in the warfare are colloidal dispersion of

    Solution

    Artificial smoke screens used in the warfare are colloidal dispersion of Titanium oxide. It usually produce white smoke. Coloured smoke can be produced by replacement of titanium oxide by other substances.

  • Question 9
    1 / -0

    The emulsifying agent present in milk that makes it stable is

    Solution

    A substance that stabilizes an emulsion is termed as emulsifier. Casein which is also a milk protein, is used as emulsifying agent in milk. 

  • Question 10
    1 / -0

    Hardening of leather in tanning industry is based on

    Solution

    By the mutual coagulation of animal skin (consist of positively charged particles) and tanning( consists of negatively charged particles), leather gets hard.

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