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MCQs

Total Questions : 273 | Page 7 of 28 pages
Question 61. Hydrogen Chloride (HCl) is a
  1.    ionic compound
  2.    covalent compound
  3.    metallic compound
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 62. Empirical formula can be obtained if following is known:
  1.    %age or mass of each element
  2.    relative atomic mass Ar
  3.    structural formula
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 63. Valency of all these ions is -2, except
  1.    SO₄
  2.    SO₃
  3.    CO₃
  4.    HCO₃
 Discuss Question
Answer: Option D. -> HCO₃
Answer: (d).HCO₃
Question 64. Molar mass of urea NH₂CONH₂ is
  1.    59.51g/mol
  2.    55.89g/mol
  3.    60.055 g/mol
  4.    65.32g/mol
 Discuss Question
Answer: Option C. -> 60.055 g/mol
Answer: (c).60.055 g/mol
Question 65. Hydrochloric Acid (HCl) and Silver Nitrate (AgNO₃) react to form
  1.    AgCl + HNO₃
  2.    HNO₃ + Ag(Aq)
  3.    Ag (s) + H₂O + N₂
  4.    Hydrogen gas is bubbled off
 Discuss Question
Answer: Option A. -> AgCl + HNO₃
Answer: (a).AgCl + HNO₃
Question 66. The element which is never found completely pure in nature is
  1.    iron
  2.    copper
  3.    mercury
  4.    hydrogen
 Discuss Question
Answer: Option A. -> iron
Answer: (a).iron
Question 67. The representation of a chemical reaction in shorthand way is via a
  1.    symbol equation
  2.    formula
  3.    covalent bonds
  4.    word equation
 Discuss Question
Answer: Option A. -> symbol equation
Answer: (a).symbol equation
Question 68. The formula of hydrogen carbonate is
  1.    HCO₃⁻
  2.    H⁻₃CO
  3.    HC⁻₃O
  4.    HCO₃
 Discuss Question
Answer: Option A. -> HCO₃⁻
Answer: (a).HCO₃⁻
Question 69. SO₄⁻² is the formula of
  1.    sulphur
  2.    sulphate
  3.    sulphuric acid
  4.    sulphide
 Discuss Question
Answer: Option B. -> sulphate
Answer: (b).sulphate
Question 70. The ions which do not take part in any activity step during a chemical reaction are called
  1.    positive ions
  2.    negative ions
  3.    neutral ions
  4.    spectators ions
 Discuss Question
Answer: Option D. -> spectators ions
Answer: (d).spectators ions

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