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MCQs

Total Questions : 350 | Page 7 of 35 pages
Question 61. For the first and second order of reactions, the graph will be
  1.    straight line
  2.    falling
  3.    rising
  4.    curve
 Discuss Question
Answer: Option D. -> curve
Answer: (d).curve
Question 62. Order of reaction can be identified by plotting graphs of
  1.    reaction only
  2.    concentration only
  3.    pH value
  4.    reaction and concentration
 Discuss Question
Answer: Option D. -> reaction and concentration
Answer: (d).reaction and concentration
Question 63. The order of the reaction is the power to which concentration of reactant is
  1.    lowered
  2.    raised
  3.    stopped
  4.    constant
 Discuss Question
Answer: Option B. -> raised
Answer: (b).raised
Question 64. By typing 'In 2=' in a calculator, it will display
  1.    0.693
  2.    syntax error
  3.    0.963
  4.    0.396
 Discuss Question
Answer: Option A. -> 0.693
Answer: (a).0.693
Question 65. Hydrogen peroxide (H₂O₂) reacts with iodide ions (I⁻) to form water (H₂O) and iodine (I₂) in presence of
  1.    iodide (I⁻) ions
  2.    hydrogen (H⁺) ions
  3.    oxide (O⁻²) ions
  4.    hydroxyl (OH⁻) ions
 Discuss Question
Answer: Option B. -> hydrogen (H⁺) ions
Answer: (b).hydrogen (H⁺) ions
Question 66. The reaction occurs by transmitting ultraviolet radiation through a sample is done using
  1.    reaction vessel
  2.    observation cell
  3.    dilatometer
  4.    calorimeter
 Discuss Question
Answer: Option B. -> observation cell
Answer: (b).observation cell
Question 67. Ultra-fast laser technique was first used by
  1.    Ahmed Zewail
  2.    Fredrick Ostwald
  3.    Bin-e-Al-Haytham
  4.    Ahmed Farabi
 Discuss Question
Answer: Option A. -> Ahmed Zewail
Answer: (a).Ahmed Zewail
Question 68. The method in which small samples of the reaction mixture is carried out at various times for chemical analysis is called
  1.    sampling
  2.    analyzing
  3.    continuous
  4.    none of above
 Discuss Question
Answer: Option A. -> sampling
Answer: (a).sampling
Question 69. The small changes in volume are measured by an instrument called
  1.    spectrometer
  2.    calorimeter
  3.    colorimeter
  4.    dilatometer
 Discuss Question
Answer: Option D. -> dilatometer
Answer: (d).dilatometer
Question 70. Transmission of light through mixture is measured by
  1.    spectrometer
  2.    calorimeter
  3.    colorimeter
  4.    none of above
 Discuss Question
Answer: Option C. -> colorimeter
Answer: (c).colorimeter

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