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MCQs

Total Questions : 168 | Page 5 of 17 pages
Question 41. To cover one fourth of filter paper with precipitate filter paper should be
  1.    large
  2.    small
  3.    medium
  4.    light
 Discuss Question
Answer: Option A. -> large
Answer: (a).large
Question 42. Insoluble impurities from solution during crystallization are removed by
  1.    drying
  2.    filtration
  3.    heating
  4.    cooling
 Discuss Question
Answer: Option B. -> filtration
Answer: (b).filtration
Question 43. Pattern on paper in chromatography is called
  1.    chroming
  2.    chroma
  3.    chromatograph
  4.    chromatogram
 Discuss Question
Answer: Option D. -> chromatogram
Answer: (d).chromatogram
Question 44. Usually crystals are dried with help of
  1.    fan
  2.    autoclave
  3.    filter paper
  4.    dryer
 Discuss Question
Answer: Option C. -> filter paper
Answer: (c).filter paper
Question 45. Colour appear ed after extraction of iodine is
  1.    brown
  2.    pink
  3.    purple
  4.    blue
 Discuss Question
Answer: Option C. -> purple
Answer: (c).purple
Question 46. Only one type of atom is found in
  1.    organic compounds
  2.    inorganic compounds
  3.    pure substances
  4.    radioactive substances
 Discuss Question
Answer: Option C. -> pure substances
Answer: (c).pure substances
Question 47. Examples of sublimate does not include
  1.    ammonium salts
  2.    nitrates
  3.    iodine
  4.    naphthalene
 Discuss Question
Answer: Option C. -> iodine
Answer: (c).iodine
Question 48. Immiscible liquids can be separated through
  1.    centrifugation
  2.    decanting
  3.    separating funnel
  4.    evaporation
 Discuss Question
Answer: Option C. -> separating funnel
Answer: (c).separating funnel
Question 49. Water can be separated from sea water through
  1.    centrifugation
  2.    separating funnel
  3.    fractional distillation
  4.    simple distillation
 Discuss Question
Answer: Option D. -> simple distillation
Answer: (d).simple distillation
Question 50. Presence of pesticides and herbicides can be tested through
  1.    careful distillation
  2.    decanting
  3.    boiling points
  4.    chromatographs
 Discuss Question
Answer: Option D. -> chromatographs
Answer: (d).chromatographs

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