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MCQs

Total Questions : 168 | Page 16 of 17 pages
Question 151. Approximate volume can be measured through
  1.    volumetric flask
  2.    burette
  3.    measuring cylinder
  4.    beaker
 Discuss Question
Answer: Option C. -> measuring cylinder
Answer: (c).measuring cylinder
Question 152. Water-soluble gases do not include
  1.    ammonia
  2.    carbon dioxide
  3.    hydrogen
  4.    oxygen
 Discuss Question
Answer: Option C. -> hydrogen
Answer: (c).hydrogen
Question 153. Hydrogen (H₂) is not
  1.    heavier than carbon dioxide
  2.    lighter than air
  3.    colored
  4.    insoluble
 Discuss Question
Answer: Option D. -> insoluble
Answer: (d).insoluble
Question 154. To prepare solutions of known concentration, apparatus used can be
  1.    pipette
  2.    burette
  3.    measuring cylinder
  4.    volumetric flask
 Discuss Question
Answer: Option D. -> volumetric flask
Answer: (d).volumetric flask
Question 155. Gases heavier than air can be collected through
  1.    upward delivery
  2.    downward delivery
  3.    downward displacement of air
  4.    upwards displacement of air
 Discuss Question
Answer: Option B. -> downward delivery
Answer: (b).downward delivery
Question 156. Gases denser than air do not include
  1.    chlorine
  2.    carbon dioxide
  3.    hydrogen chloride
  4.    ammonia
 Discuss Question
Answer: Option D. -> ammonia
Answer: (d).ammonia
Question 157. Lighter gases
  1.    may be collected through downward delivery
  2.    may be collected by upward displacement of air
  3.    are dried through conc. H₂SO₄
  4.    are dried through dilute H₂SO₄
 Discuss Question
Answer: Option C. -> are dried through conc. H₂SO₄
Answer: (c).are dried through conc. H₂SO₄
Question 158. Accurate stopwatches can measure
  1.    up to 0.1 second
  2.    up to 0 .01 second
  3.    up to.001 second
  4.    up to 0.2 second
 Discuss Question
Answer: Option B. -> up to 0 .01 second
Answer: (b).up to 0 .01 second
Question 159. Solvent extraction is more good if repeated extractions are done using
  1.    Large solvent
  2.    small solvent
  3.    extra solvent
  4.    normal solvent
 Discuss Question
Answer: Option B. -> small solvent
Answer: (b).small solvent
Question 160. For crystallization we use solution that should be
  1.    Saturated
  2.    supersaturated
  3.    dilute
  4.    binary
 Discuss Question
Answer: Option A. -> Saturated
Answer: (a).Saturated

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