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MCQs

Total Questions : 228 | Page 7 of 23 pages
Question 61. Insoluble salt is
  1.    Sodium Chloride NaCl
  2.    Lead Chloride PbCl₂
  3.    Magnesium Chloride
  4.    Potassium hydroxide
 Discuss Question
Answer: Option B. -> Lead Chloride PbCl₂
Answer: (b).Lead Chloride PbCl₂
Question 62. Consider equation: Fe+3(aq) + 3OH-(aq) → Fe(OH)₃(s). precipitate of Iron(III) Hydroxide will be of
  1.    green color
  2.    blue color
  3.    brown color
  4.    white color
 Discuss Question
Answer: Option C. -> brown color
Answer: (c).brown color
Question 63. Acid salts do not include
  1.    calcium phosphate
  2.    sodium dihydrogen phosphate
  3.    sodium hydrogen sulphate
  4.    calcium hydrogen carbonate
 Discuss Question
Answer: Option A. -> calcium phosphate
Answer: (a).calcium phosphate
Question 64. Consider reaction: CuO + H₂SO₄ → CuSO₄ + H₂O. excess Copper Oxide (CuO) is added,
  1.    so that more mass of salt is formed
  2.    so as to neutralize excess acid
  3.    to ease the salt crystallization
  4.    to help salt retain the water of crystallization
 Discuss Question
Answer: Option B. -> so as to neutralize excess acid
Answer: (b).so as to neutralize excess acid
Question 65. Number of replaceable hydrogen atoms in phosphoric acid is
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 66. Salts are formed when
  1.    acids neutralize bases
  2.    acids neutralize alkalis
  3.    acids react with a metal
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 67. Evaporation of solution of CuSO₄ helps in
  1.    making it concentrated
  2.    crystallization of CuSO₄
  3.    evaporation of salt CuSO₄
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 68. Metal oxides or metal hydroxides form
  1.    acids
  2.    base
  3.    salt solution
  4.    sugar solution
 Discuss Question
Answer: Option B. -> base
Answer: (b).base
Question 69. If hydrogen (H+) of an acid is fully replaced by a metal, product is a
  1.    neutral oxides
  2.    amphoteric oxides
  3.    acid salt
  4.    salt
 Discuss Question
Answer: Option D. -> salt
Answer: (d).salt
Question 70. Number of hydrogen atoms in an acid which can be replaced by a metal is called
  1.    tribasic
  2.    basicity
  3.    acidity
  4.    amphoteric oxides
 Discuss Question
Answer: Option B. -> basicity
Answer: (b).basicity

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