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Chemistry in Everyday Life Test - 8

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Chemistry in Everyday Life Test - 8
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Weekly Quiz Competition
  • Question 1
    4 / -1

    Which one is acidic dye

    Solution

    Acid dyes are characterised by the presence of –COOH, SO3H or Phenolic group. They are applied in the presence of acidic solution. They are usually applied to Wool, Silk, Nylon. They have affinity for cotton. Common examples are Orange I, Orange II, Methyl red etc.

     

  • Question 2
    4 / -1

    Alizarin gives a red colour by mordanting it with the sulphate of a metal. The metal ion involved is

    Solution

    "Alizarin" is a typical mordant dye gives different colours depending on the metal ion used, for example with Al+3, alizarin gives a rose red colour.

    Co-ordination compound of alizarin with Al+3 as follow

     

  • Question 3
    4 / -1

    Which of the following is not a correct statement with regard to stearic acid and oleic acid molecules?

    Solution

    Stearic acid and oleic acid, both are saturated fatty acids. And found in various animal and plant and vegetable fats.

     

  • Question 4
    4 / -1

    Parathion is

    Solution

    "Parathion" is an organic phosphorus compounds.

     

  • Question 5
    4 / -1

    The principal buffer present in human blood

    Solution

     buffer present in human blood, which maintain pH of blood.

     

  • Question 6
    4 / -1

    Which of the following represents soap

    Solution

    Soaps are the sodium or potassium salt of higher fatty acids. e.g., C17H35COOK (Potassium stearate). These are obtained by alkaline hydrolysis of oils and fats. The reaction is called saponification.

     

  • Question 7
    4 / -1

    Asthma patient use a mixture of ….. for respiration

    Solution

    A mixture of O2 and He is used for respiration as helium is inert and light gas and diffuse rapidly.

     

  • Question 8
    4 / -1

    A dye imparts red colour on fabric. What colour of light was absorbed by the dye

    Solution

    Green is the complimentary colour of red.

     

  • Question 9
    4 / -1

    Which of the following is an azo dye

    Solution

    Orange-I is an acid azodye.

     

  • Question 10
    4 / -1

    An example of anthraquinone dye is

    Solution

    Alizarin is an example of anthraquinon dye.

     

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