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MCQs

Total Questions : 526 | Page 3 of 53 pages
Question 21. Molecules of solid have not property of
  1.    moving random
  2.    close packing
  3.    hardness
  4.    rigidity
 Discuss Question
Answer: Option A. -> moving random
Answer: (a).moving random
Question 22. Phenomenon in which a crystal exist in more than one forms is called
  1.    isomorphism
  2.    polymorphism
  3.    habit of crystal
  4.    symmetry
 Discuss Question
Answer: Option B. -> polymorphism
Answer: (b).polymorphism
Question 23. Having definite shape is characteristic of
  1.    solids
  2.    liquids
  3.    gases
  4.    plasma
 Discuss Question
Answer: Option A. -> solids
Answer: (a).solids
Question 24. Liquid crystals have
  1.    five types
  2.    four types
  3.    three types
  4.    six types
 Discuss Question
Answer: Option C. -> three types
Answer: (c).three types
Question 25. Forms of elements showing allotropy are called
  1.    allotropes
  2.    polymorphs
  3.    cubic forms
  4.    isomorphs
 Discuss Question
Answer: Option A. -> allotropes
Answer: (a).allotropes
Question 26. Glycerin is decomposed at
  1.    400 degree Celsius
  2.    290 degree Celsius
  3.    789 degree Celsius
  4.    750 degree Celsius
 Discuss Question
Answer: Option B. -> 290 degree Celsius
Answer: (b).290 degree Celsius
Question 27. One of angle in monoclinic crystal system is
  1.    less than 90 degree
  2.    greater than 90 degree
  3.    less than30 degree
  4.    less than 10 degree
 Discuss Question
Answer: Option B. -> greater than 90 degree
Answer: (b).greater than 90 degree
Question 28. Enthalpy changes are usually
  1.    negative
  2.    neutral
  3.    positive
  4.    without change
 Discuss Question
Answer: Option C. -> positive
Answer: (c).positive
Question 29. Glycerin boils at 210 degree Celsius when pressure is
  1.    45 torr
  2.    76 torr
  3.    50 torr
  4.    45 torr
 Discuss Question
Answer: Option C. -> 50 torr
Answer: (c).50 torr
Question 30. Metallic theory was proposed in year
  1.    1978
  2.    1900
  3.    1987
  4.    1923
 Discuss Question
Answer: Option D. -> 1923
Answer: (d).1923

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