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MCQs

Total Questions : 740 | Page 6 of 74 pages
Question 51. Electron affinity value is expressed in figures
  1.    Positive
  2.    Negative
  3.    Mixed values
  4.    None of above
 Discuss Question
Answer: Option B. -> Negative
Answer: (b).Negative
Question 52. The radius of Sodium ion is (in pm)
  1.    157
  2.    136
  3.    95
  4.    72
 Discuss Question
Answer: Option A. -> 157
Answer: (a).157
Question 53. The oxidation state of noble gases is
  1.    one
  2.    Two
  3.    Three
  4.    Zero
 Discuss Question
Answer: Option D. -> Zero
Answer: (d).Zero
Question 54. The ability of a substance to conduct electricity without change in composition is called
  1.    Electronegativity
  2.    Electro positivity
  3.    Conductivity
  4.    Ductility
 Discuss Question
Answer: Option C. -> Conductivity
Answer: (c).Conductivity
Question 55. Binary compounds of hydrogen with other elements are called
  1.    Halides
  2.    Oxides
  3.    Hydrides
  4.    Hydroxides
 Discuss Question
Answer: Option C. -> Hydrides
Answer: (c).Hydrides
Question 56. Ionization energy and Electron affinity is measured in
  1.    Electron volt
  2.    KJ/mol
  3.    Kcal
  4.    All
 Discuss Question
Answer: Option D. -> All
Answer: (d).All
Question 57. Hydration energy highly depends upon
  1.    mass of ions
  2.    charge to size ratio
  3.    charge to mass ratio
  4.    Attractive force
 Discuss Question
Answer: Option B. -> charge to size ratio
Answer: (b).charge to size ratio
Question 58. When dissolved in water, metals give oxides
  1.    Acidic
  2.    Basic
  3.    Amphoteric
  4.    None of above
 Discuss Question
Answer: Option B. -> Basic
Answer: (b).Basic
Question 59. All of these are metals except
  1.    Na
  2.    Pb
  3.    S
  4.    Zn
 Discuss Question
Answer: Option C. -> S
Answer: (c).S
Question 60. The radius of sodium ion is
  1.    157pm
  2.    136pm
  3.    95pm
  4.    72pm
 Discuss Question
Answer: Option C. -> 95pm
Answer: (c).95pm

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