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MCQs

Total Questions : 194 | Page 10 of 20 pages
Question 91. The heat capacity is related to the temperature by the formula
  1.    q = C x ΔT
  2.    q = s x ΔT
  3.    q = Δs x T
  4.    q= s x t
 Discuss Question
Answer: Option A. -> q = C x ΔT
Answer: (a).q = C x ΔT
Question 92. The amount of heat absorbed or evolved when one mole of the compound is formed from its elements is
  1.    Enthalpy of Reaction
  2.    Enthalpy of atomization
  3.    Enthalpy of formation
  4.    Enthalpy of combustion
 Discuss Question
Answer: Option C. -> Enthalpy of formation
Answer: (c).Enthalpy of formation
Question 93. In exothermic reaction, enthalpy of reactants is
  1.    Less
  2.    More
  3.    Medium
  4.    No change
 Discuss Question
Answer: Option B. -> More
Answer: (b).More
Question 94. The enthalpy of neutralization of NaOH by HCl is
  1.    57.4 KJ/mol
  2.    (-)57.4 KJ/mol
  3.    393.5 KJ/mol
  4.    692 Kj/mol
 Discuss Question
Answer: Option B. -> (-)57.4 KJ/mol
Answer: (b).(-)57.4 KJ/mol
Question 95. The heat change during any physical or chemical change taking place at constant pressure is called
  1.    Energy change
  2.    Temperature change
  3.    Enthalpy change
  4.    Entropy change
 Discuss Question
Answer: Option C. -> Enthalpy change
Answer: (c).Enthalpy change
Question 96. Water has particularly high specific heat capacity of
  1.    4180 J/Kg/C
  2.    4108 JKg
  3.    4180 Kg/C
  4.    4180/C
 Discuss Question
Answer: Option A. -> 4180 J/Kg/C
Answer: (a).4180 J/Kg/C
Question 97. A reaction will be spontaneous if its calculated emf is
  1.    Positive/Negative
  2.    Negative
  3.    Zero
  4.    Positive
 Discuss Question
Answer: Option D. -> Positive
Answer: (d).Positive
Question 98. 235 J/Kg/C is specific heat constant of
  1.    Iron
  2.    Ice
  3.    Wax
  4.    Silver
 Discuss Question
Answer: Option D. -> Silver
Answer: (d).Silver
Question 99. Specific heat constant of Iron is
  1.    910 J/Kg/C
  2.    470 J/Kg/C
  3.    128 J/Kg/C
  4.    138 J/Kg/C
 Discuss Question
Answer: Option B. -> 470 J/Kg/C
Answer: (b).470 J/Kg/C
Question 100. The standard reduction potential of Zinc is
  1.    >0.76
  2.    -0.76
  3.    0.76
  4.    <-0.76
 Discuss Question
Answer: Option C. -> 0.76
Answer: (c).0.76

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