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MCQs

Total Questions : 212 | Page 9 of 22 pages
Question 81. Chemical formula for Caustic Potash is
  1.    NaOH
  2.    KOH
  3.    MgO
  4.    Ca(OH)₂
 Discuss Question
Answer: Option B. -> KOH
Answer: (b).KOH
Question 82. PH value above 7 is
  1.    acidic
  2.    alkaline
  3.    neutral
  4.    basic
 Discuss Question
Answer: Option B. -> alkaline
Answer: (b).alkaline
Question 83. In Universal indicators, weak alkalis are indicated through a pH of
  1.    4 to 7
  2.    8 to 10
  3.    10 to 14
  4.    7 to 14
 Discuss Question
Answer: Option B. -> 8 to 10
Answer: (b).8 to 10
Question 84. Amphoteric oxides
  1.    are only acidic oxides
  2.    are only basic oxides
  3.    are both acidic and basic oxides
  4.    are a form of neutral oxides
 Discuss Question
Answer: Option C. -> are both acidic and basic oxides
Answer: (c).are both acidic and basic oxides
Question 85. Non-metal oxides include
  1.    SO₂
  2.    CO₂
  3.    P₂O₅
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 86. Oxalic acid (H₂C₂O₄) is found in
  1.    sour milk
  2.    rhubarb plant
  3.    limes
  4.    pears
 Discuss Question
Answer: Option B. -> rhubarb plant
Answer: (b).rhubarb plant
Question 87. Cider is
  1.    acidic
  2.    alkaline
  3.    neutral
  4.    basic
 Discuss Question
Answer: Option A. -> acidic
Answer: (a).acidic
Question 88. Hydrogen Chloride gas (HCl(g)) dissolved in Methylbenzene (C₇H₈) is not acidic because
  1.    it is ionic in nature
  2.    it has ample free hydrogen ions
  3.    it has no free hydrogen ions
  4.    it can easily form hydroxonium ions
 Discuss Question
Answer: Option C. -> it has no free hydrogen ions
Answer: (c).it has no free hydrogen ions
Question 89. Acids react with metal carbonates to form
  1.    salt, water, hydrogen gas
  2.    salt, water, CO₂
  3.    salt and gas only
  4.    salt and water only
 Discuss Question
Answer: Option B. -> salt, water, CO₂
Answer: (b).salt, water, CO₂
Question 90. Hydroxonium ions (H₃O+)
  1.    can only exist in water
  2.    are highly ionic
  3.    are highly covalent
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b

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