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MCQs

Total Questions : 228 | Page 9 of 23 pages
Question 81. Lead carbonate (PbCO₃) only dissolves 0.00017g in dm³ of water, hence it is regarded as
  1.    soluble
  2.    insoluble
  3.    partially soluble
  4.    partially insoluble
 Discuss Question
Answer: Option B. -> insoluble
Answer: (b).insoluble
Question 82. Water may act as
  1.    acid only
  2.    base only
  3.    alkalis
  4.    acid and base
 Discuss Question
Answer: Option D. -> acid and base
Answer: (d).acid and base
Question 83. Strong acids completely ionize in
  1.    alcohol
  2.    water
  3.    gases
  4.    alkalis
 Discuss Question
Answer: Option B. -> water
Answer: (b).water
Question 84. Increase in radius of metal ion will decrease its
  1.    solubility
  2.    polarity
  3.    ductility
  4.    malleability
 Discuss Question
Answer: Option A. -> solubility
Answer: (a).solubility
Question 85. When ionic solid dissolves in water
  1.    crystal lattice break
  2.    ions depart
  3.    water acidifies
  4.    water turns alkaline
 Discuss Question
Answer: Option C. -> water acidifies
Answer: (c).water acidifies
Question 86. Water has very low extent of
  1.    ionization
  2.    bonding
  3.    temperature
  4.    none of above
 Discuss Question
Answer: Option A. -> ionization
Answer: (a).ionization
Question 87. In compost, the reaction takes place among
  1.    weak acids only
  2.    weak bases only
  3.    strong bases and acids
  4.    weak acid and bases
 Discuss Question
Answer: Option D. -> weak acid and bases
Answer: (d).weak acid and bases
Question 88. On ionizing, water molecules (H₂O) the products include
  1.    H⁺ ion only
  2.    OH⁻ ion only
  3.    oxygen
  4.    H⁺ and OH⁻ ions
 Discuss Question
Answer: Option D. -> H⁺ and OH⁻ ions
Answer: (d).H⁺ and OH⁻ ions
Question 89. The lattice energy is always
  1.    endothermic
  2.    exothermic
  3.    ectothermic
  4.    hypothermic
 Discuss Question
Answer: Option B. -> exothermic
Answer: (b).exothermic
Question 90. The value of ionic product of water is
  1.    198K
  2.    298K
  3.    928K
  4.    892K
 Discuss Question
Answer: Option B. -> 298K
Answer: (b).298K

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