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MCQs

Total Questions : 115 | Page 6 of 12 pages
Question 51. Which quartz mineral shows blue colour?
  1.    Rose quartz
  2.    Blue quartz
  3.    Smoky quartz
  4.    Rock crystal
 Discuss Question
Answer: Option B. -> Blue quartz
Answer: (b).Blue quartz
Question 52. Pick the quartz mineral which is translucent among the following.
  1.    Rose quartz
  2.    Agate
  3.    Amethyst quartz
  4.    Milky quartz
 Discuss Question
Answer: Option C. -> Amethyst quartz
Answer: (c).Amethyst quartz
Question 53. The streak given by the quartz group is __________________
  1.    White
  2.    Colourless
  3.    Blue
  4.    Pale yellow
 Discuss Question
Answer: Option B. -> Colourless
Answer: (b).Colourless
Question 54. Rock crystal belongs to which mineral group?
  1.    Quartz group
  2.    Feldspar group
  3.    Carbonate group
  4.    Ferro-magnesium group
 Discuss Question
Answer: Option A. -> Quartz group
Answer: (a).Quartz group
Question 55. Pick the quartz which is colourless among the following.
  1.    Rose quartz
  2.    Smoky quartz
  3.    Milky quartz
  4.    Rock crystal
 Discuss Question
Answer: Option D. -> Rock crystal
Answer: (d).Rock crystal
Question 56. The type of mineral showing variable colour is?
  1.    Idiochromatic
  2.    Allochromatic
  3.    Iridescence
  4.    Pseudochromatic
 Discuss Question
Answer: Option B. -> Allochromatic
Answer: (b).Allochromatic
Question 57. The phenomenon due to which a mineral shows rainbow colours is?
  1.    Idiochromatism
  2.    Allochromatism
  3.    Iridescence
  4.    Pseudochromatism
 Discuss Question
Answer: Option C. -> Iridescence
Answer: (c).Iridescence
Question 58. Allochromatic minerals may show more than two colours.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 59. Pseudochromatism occurs due to ___________
  1.    Reflection
  2.    Transmittance
  3.    Refraction
  4.    Simultaneous reflection and refraction
 Discuss Question
Answer: Option D. -> Simultaneous reflection and refraction
Answer: (d).Simultaneous reflection and refraction
Question 60. The type of mineral which shows a set of colours in succession is?
  1.    Idiochromatic
  2.    Pseudochromatic
  3.    Allochromatic
  4.    Iridescence
 Discuss Question
Answer: Option B. -> Pseudochromatic
Answer: (b).Pseudochromatic

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