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MCQs

Total Questions : 273 | Page 4 of 28 pages
Question 31. Ca(OH)₂ indicates that molecule is formed through
  1.    two Ca ions and one OH ion
  2.    One Ca ion and two OH ions
  3.    the charge on OH ion is -2
  4.    the charge on OH ion is +2
 Discuss Question
Answer: Option B. -> One Ca ion and two OH ions
Answer: (b).One Ca ion and two OH ions
Question 32. Chemical formula of Sodium Sulfite is
  1.    Na₂SO₃
  2.    Na(SO₄)₂
  3.    Na₂CO₃.10H₂O
  4.    NaH₂PO₄.H₂O
 Discuss Question
Answer: Option A. -> Na₂SO₃
Answer: (a).Na₂SO₃
Question 33. Ions remaining unchanged in both reactants and products are called as
  1.    residual ions
  2.    sublimates
  3.    spectator ions
  4.    radical ions
 Discuss Question
Answer: Option C. -> spectator ions
Answer: (c).spectator ions
Question 34. In Calcium Hydroxide (Ca(OH)₂), valency of Ca is
  1.    −1
  2.    −2
  3.     +1
  4.     +2
 Discuss Question
Answer: Option D. -> +2
Answer: (d). +2
Question 35. Chemical formula of Potassium Hydrogen Carbonate
  1.    KHCO₃
  2.    K₂CO₃.H₂O
  3.    KCO₃
  4.    K₂CO₄.H₂O
 Discuss Question
Answer: Option A. -> KHCO₃
Answer: (a).KHCO₃
Question 36. Formula of Zinc Chloride (ZnCl₂) indicates that charge on Zinc ion (Zn+2) is
  1.     +1
  2.     +2
  3.    −1
  4.    −2
 Discuss Question
Answer: Option B. -> +2
Answer: (b). +2
Question 37. State symbol indicate the
  1.    state form
  2.    the solubility
  3.    the rigidity
  4.    the volatility
 Discuss Question
Answer: Option A. -> state form
Answer: (a).state form
Question 38. Valency of iron (Fe) is
  1.    Fe+2
  2.    Fe+3
  3.    Fe+5
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 39. Consider Calcium Carbonate (CaCO₃) and Hydrochloric Acid (HCl) as reactants, molecules of Hydrochloric Acid (HCl) required to balance equation will be
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Answer: (b).2
Question 40. Butane (C₄H₁₀)molecular weight is
  1.    58.122g/mol
  2.    63.71g/mol
  3.    55.12g/mol
  4.    51.19g/mol
 Discuss Question
Answer: Option A. -> 58.122g/mol
Answer: (a).58.122g/mol

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