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MCQs

Total Questions : 212 | Page 4 of 22 pages
Question 31. Acids react with metal oxides to form
  1.    salt and water
  2.    salt and hydrogen gas
  3.    salt and oxygen
  4.    salt and water
 Discuss Question
Answer: Option D. -> salt and water
Answer: (d).salt and water
Question 32. Al₂O₃ + NaOH + H₂O →
  1.    NaClH₃O₄ (s)
  2.    NaAl(OH)₄ (aq)
  3.    NaAl(OH)₄ (s)
  4.    NaClH₃O₄ (aq)
 Discuss Question
Answer: Option B. -> NaAl(OH)₄ (aq)
Answer: (b).NaAl(OH)₄ (aq)
Question 33. Strong acids do not include
  1.    H₂SO₄
  2.    HNO₃
  3.    HCl
  4.    H₂SO₃
 Discuss Question
Answer: Option D. -> H₂SO₃
Answer: (d).H₂SO₃
Question 34. Neutral oxides
  1.    are soluble in water
  2.    are insoluble in water
  3.    are metallic oxides
  4.    include CO₂
 Discuss Question
Answer: Option B. -> are insoluble in water
Answer: (b).are insoluble in water
Question 35. Water has a pH of
  1.    5
  2.    7
  3.    9
  4.    11
 Discuss Question
Answer: Option B. -> 7
Answer: (b).7
Question 36. Consider equation P₄O₁₀ + H₂O → H₃PO₄. Moles of water required in reaction would be
  1.    2
  2.    4
  3.    6
  4.    8
 Discuss Question
Answer: Option C. -> 6
Answer: (c).6
Question 37. Basic oxides do not include
  1.    K₂O
  2.    P₄O₁₀
  3.    Na₂O
  4.    CaO
 Discuss Question
Answer: Option B. -> P₄O₁₀
Answer: (b).P₄O₁₀
Question 38. Milk has a pH of
  1.    3
  2.    6
  3.    9
  4.    12
 Discuss Question
Answer: Option B. -> 6
Answer: (b).6
Question 39. In Universal indicators, a pH of 11 to 14 is indicated through
  1.    turquoise color
  2.    violet color
  3.    blue color
  4.    light violet color
 Discuss Question
Answer: Option B. -> violet color
Answer: (b).violet color
Question 40. Bases include
  1.    metal oxides
  2.    metal hydroxides
  3.    non-metal oxides
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b

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