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Chemistry Test - 23

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Chemistry Test - 23
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Which of the following polymer type is not classified on the basis of its application and properties?

    Solution

    Synthetic polymers are classified on the basis of their origin and are known as man-made polymers.

  • Question 2
    1 / -0

    Which of the following is true for the resultant polymer product formed, when molecules of pthalic acid react with molecules of glycerol?

    Solution

    The reaction between pthalic acid and glycerol initially results into linear or branched polymer but, due to trifunctionality of glycerol, ultimately cross-linking takes place between the molecules.

  • Question 3
    1 / -0

    Which of the following kind of polymers are known for their high crystallinity?

    Solution

    There is high steric regularity in isotactic polymers which fosters close packing of molecular chains. Thus, they are highly crystalline.

  • Question 4
    1 / -0

    Which of the following does not result in the formation of an ester?

    Solution

    The reaction of acid and acid chloride with alcohol is an esterification reaction, and even the reaction of ester and alcohol give rise to formation of ester. Amine and acid react to give amide group.

  • Question 5
    1 / -0

    A car is travelling with a speed of 550 ft/sec. How fast it is going in miles per hour?

    Solution

    1 mile = 5280 ft and 1 hour = 3600 sec.

  • Question 6
    1 / -0

    Oil is flowing through a 4 in.-diameter pipe having a velocity of 6 ft/sec. The flow rate gallon per minute and kinetic energy of water in (ft)(lbf)/lbm are respectively?

    Solution

    K.E. = 0.5mv2 and Q = Av.

  • Question 7
    1 / -0

    Acceleration of gravity in AE system is equal to

    Solution

    Acceleration of gravity in AE system is equal to 32.174 ft/s2.

  • Question 8
    1 / -0

    If a bond is made up of a large number of organic compound, then the bond is termed as?

    Solution

    This is because they have the tendency to transfer electrons.

  • Question 9
    1 / -0

    Which of the following polymer exhibit a lower value of molar cohesion?

    Solution

    Rubbers have the lowest value of molar cohesion in comparison to plastics and fibres.

  • Question 10
    1 / -0

    Conversion factor to change inches in to cm. is

    Solution

    1 in. = 2.54 cm.

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