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MCQs

Total Questions : 228 | Page 6 of 23 pages
Question 51. Chemical formula of sodium dihydrogen phosphate is
  1.    NaH₂PO₃
  2.    NaH₂PO₄
  3.    Na₂H₂PO₄
  4.    Na₃H₂PO₄
 Discuss Question
Answer: Option B. -> NaH₂PO₄
Answer: (b).NaH₂PO₄
Question 52. Chemical formula of Disodium Hydrogen Phosphate is
  1.    Na₂HPO₄
  2.    Na₂H₃PO₃
  3.    Na₂HPO₄
  4.    Na₂H₃PO₄
 Discuss Question
Answer: Option C. -> Na₂HPO₄
Answer: (c).Na₂HPO₄
Question 53. All are soluble but
  1.    chlorides
  2.    sulphates
  3.    sodium salts
  4.    majority of carbonates
 Discuss Question
Answer: Option D. -> majority of carbonates
Answer: (d).majority of carbonates
Question 54. All are soluble but
  1.    nitrates
  2.    ammonium salts
  3.    sodium salts
  4.    majority of carbonates
 Discuss Question
Answer: Option D. -> majority of carbonates
Answer: (d).majority of carbonates
Question 55. While forming soluble salts, acid is added to metal until there is no more
  1.    precipitation
  2.    polymerization
  3.    H₂ gas
  4.    saturation
 Discuss Question
Answer: Option C. -> H₂ gas
Answer: (c).H₂ gas
Question 56. Acid salts cannot be formed by
  1.    Sulphuric acid
  2.    Carbonic acid
  3.    Hydrochloric acid
  4.    Phosphoric acid
 Discuss Question
Answer: Option C. -> Hydrochloric acid
Answer: (c).Hydrochloric acid
Question 57. Consider equation: Fe+2(aq) + 2OH-(aq) → Fe(OH)₂(s). precipitate of Iron(II) Hydroxide will be of
  1.    green color
  2.    blue color
  3.    brown color
  4.    white color
 Discuss Question
Answer: Option A. -> green color
Answer: (a).green color
Question 58. Insoluble salts can be made by
  1.    reaction of a metal and an acid
  2.    reaction of a metal oxide and an acid
  3.    reaction of a metal hydroxide and an acid
  4.    ionic precipitation
 Discuss Question
Answer: Option D. -> ionic precipitation
Answer: (d).ionic precipitation
Question 59. People requiring an x-ray of stomach are given a porridge of
  1.    PbSO₄
  2.    BaSO₄
  3.    Na₂CO₃
  4.    K₂CO₃
 Discuss Question
Answer: Option B. -> BaSO₄
Answer: (b).BaSO₄
Question 60. No heating is required when to form salts, acids react with
  1.    metal carbonates
  2.    metal oxides
  3.    Metal hydroxides
  4.    metal chlorides
 Discuss Question
Answer: Option A. -> metal carbonates
Answer: (a).metal carbonates

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