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MCQs

Total Questions : 228 | Page 5 of 23 pages
Question 41. The process of direct conversion of solid into vapours is
  1.    Filtration
  2.    Crystallization
  3.    Sublimation
  4.    Chromatography
 Discuss Question
Answer: Option C. -> Sublimation
Answer: (c).Sublimation
Question 42. The stationary phase is solid in
  1.    Gas chromatography
  2.    Partition chromatography
  3.    Adsorption chromatography
  4.    Liquid chromatography
 Discuss Question
Answer: Option C. -> Adsorption chromatography
Answer: (c).Adsorption chromatography
Question 43. The chromatographic technique was invented by a Botanist
  1.    J. J. Thomson
  2.    M. S.Twsett
  3.    Rutherford
  4.    Einstein
 Discuss Question
Answer: Option B. -> M. S.Twsett
Answer: (b).M. S.Twsett
Question 44. In chromatography, substances are separated due to their relative
  1.    Ascending ability
  2.    Descending ability
  3.    Affinities
  4.    Bonding
 Discuss Question
Answer: Option C. -> Affinities
Answer: (c).Affinities
Question 45. In order to achieve a good separation, two liquids are gently shaken to increase their area of
  1.    Separation
  2.    Solubility
  3.    Miscibility
  4.    Contact
 Discuss Question
Answer: Option D. -> Contact
Answer: (d).Contact
Question 46. In the IUPAC system, the ion charge is indicated in the name as in brackets.
  1.    Real numbers
  2.    Roman Numerals
  3.    Integers
  4.    Whole numbers
 Discuss Question
Answer: Option B. -> Roman Numerals
Answer: (b).Roman Numerals
Question 47. NaCl has ionic character
  1.    50%
  2.    60%
  3.    70%
  4.    72%
 Discuss Question
Answer: Option D. -> 72%
Answer: (d).72%
Question 48. The magnitude of the charges on the anions is equal to 8 minus their Group Number.
  1.    Negative charge
  2.    Positive charge
  3.    Zero
  4.    Multiple charge
 Discuss Question
Answer: Option A. -> Negative charge
Answer: (a).Negative charge
Question 49. Almost all the polyatomic ions are
  1.    Positively Charged cations
  2.    Negatively Charged Anions
  3.    Neutral atom
  4.    Ionic compound
 Discuss Question
Answer: Option B. -> Negatively Charged Anions
Answer: (b).Negatively Charged Anions
Question 50. Aluminium cation has a charge
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3

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