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MCQs

Total Questions : 212 | Page 21 of 22 pages
Question 201. SO₂ left at the end of the contact process should not be escaped as it can cause
  1.    acid rain
  2.    toxic pollution
  3.    smog
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 202. One of the most important manufactured chemical is
  1.    sulfuric acid
  2.    nitric acid
  3.    benzoic acid
  4.    acetic acid
 Discuss Question
Answer: Option A. -> sulfuric acid
Answer: (a).sulfuric acid
Question 203. Consider equation PbO + HCl → PbCl₂ + H₂O. Moles of HCl required to balance equation are
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Answer: (b).2
Question 204. Amphoteric oxides react with acids to form
  1.    salt
  2.    water
  3.    a sweet base
  4.    both a and b
 Discuss Question
Answer: Option D. -> both a and b
Answer: (d).both a and b
Question 205. NH₄Cl(s) + NaOH →
  1.    Na₂CO₃ + H₂+NO₂
  2.    Na₂CO₃.(H₂O)₅ + HCl
  3.    NaCl + H₂O + NH₃
  4.    NaCl + HNO₃
 Discuss Question
Answer: Option C. -> NaCl + H₂O + NH₃
Answer: (c).NaCl + H₂O + NH₃
Question 206. Non-metal oxides showing no reaction with acids or alkalis are called as
  1.    Amphoteric acids
  2.    neutral oxides
  3.    acidic oxides
  4.    basic oxides
 Discuss Question
Answer: Option B. -> neutral oxides
Answer: (b).neutral oxides
Question 207. Lemon juice has a pH of
  1.    2
  2.    6
  3.    8
  4.    12
 Discuss Question
Answer: Option A. -> 2
Answer: (a).2
Question 208. Baking Powder is
  1.    acidic
  2.    alkaline
  3.    neutral
  4.    salty
 Discuss Question
Answer: Option B. -> alkaline
Answer: (b).alkaline
Question 209. Acid shows red color with
  1.    litmus indicator
  2.    universal indicator
  3.    methyl orange indicator
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 210. PH of 7 is shown through a color of
  1.    red
  2.    blue
  3.    green
  4.    yellow
 Discuss Question
Answer: Option C. -> green
Answer: (c).green

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