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MCQs

Total Questions : 197 | Page 9 of 20 pages
Question 81. Length to width ratio of cellulose fibre is
  1.    3 x 1000 micrometer long by 15 micrometer wide
  2.    3 x 100000 micrometer long by 15 micrometer wide
  3.    3 x 1000 micrometer long by 25 micrometer wide
  4.    3 x 100 micrometer long by 25 micrometer wide
 Discuss Question
Answer: Option B. -> 3 x 100000 micrometer long by 15 micrometer wide
Answer: (b).3 x 100000 micrometer long by 15 micrometer wide
Question 82. Natural cellulose is aggregated into
  1.    fine microfibrils
  2.    rough microfibrils
  3.    rigidity
  4.    flexibility
 Discuss Question
Answer: Option A. -> fine microfibrils
Answer: (a).fine microfibrils
Question 83. According to Hearle, X-ray diffraction results could be explained by
  1.    small size of crystalline fibrils
  2.    density of imperfect packing
  3.    accessibility by the fibril surface
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 84. According to Manley, assembly of fine microfibrils without amorphous regions is called
  1.    fine structure
  2.    microfibrils
  3.    rough structure
  4.    porous material
 Discuss Question
Answer: Option A. -> fine structure
Answer: (a).fine structure
Question 85. Length to width ratio of cellulose fibre is same as that of
  1.    protein
  2.    nylon
  3.    glass
  4.    cotton
 Discuss Question
Answer: Option D. -> cotton
Answer: (d).cotton
Question 86. In linear polymers, linking is in
  1.    one direction
  2.    two direction
  3.    three directions
  4.    multiple directions
 Discuss Question
Answer: Option A. -> one direction
Answer: (a).one direction
Question 87. Hard materials are made up of
  1.    small molecules
  2.    weak molecules
  3.    giant molecules
  4.    round molecules
 Discuss Question
Answer: Option C. -> giant molecules
Answer: (c).giant molecules
Question 88. Fibre physics is a study about fibre
  1.    structure
  2.    physical properties and structure
  3.    physical properties and chemical properties
  4.    bonding
 Discuss Question
Answer: Option B. -> physical properties and structure
Answer: (b).physical properties and structure
Question 89. Hydrogen bond in water are strong enough to hold molecules as a crystalline solid at
  1.    10 degrees
  2.    below 0 degree
  3.    above 0 degree
  4.    100 degrees
 Discuss Question
Answer: Option B. -> below 0 degree
Answer: (b).below 0 degree
Question 90. Molecular arrangement determines material's
  1.    characteristics
  2.    bonding
  3.    properties
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above

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