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MCQs

Total Questions : 194 | Page 14 of 20 pages
Question 131. The energy which is required to elevate the temperature of 1g of liquid by 1 °C is called
  1.    ideal heat capacity
  2.    specific heat capacity
  3.    latent heat capacity
  4.    specific latent heat capacity
 Discuss Question
Answer: Option B. -> specific heat capacity
Answer: (b).specific heat capacity
Question 132. Polystyrene drinking cup can act like the apparatus of
  1.    calorimeter
  2.    spectrometer
  3.    barometer
  4.    manometer
 Discuss Question
Answer: Option A. -> calorimeter
Answer: (a).calorimeter
Question 133. To increase the temperature of 1 g of water by 1 °C, it requires energy equal to
  1.    4.18J
  2.    4.81J
  3.    4.21J
  4.    4.12J
 Discuss Question
Answer: Option A. -> 4.18J
Answer: (a).4.18J
Question 134. The ideal temperature for calorimetry is
  1.    0.1 °C only
  2.    0.2 °C only
  3.    0.9 °C
  4.    0.1 °C and 0.2 °C
 Discuss Question
Answer: Option D. -> 0.1 °C and 0.2 °C
Answer: (d).0.1 °C and 0.2 °C
Question 135. Isolated atoms are found in
  1.    metals
  2.    non-metals
  3.    transition metals
  4.    noble gases
 Discuss Question
Answer: Option D. -> noble gases
Answer: (d).noble gases
Question 136. The attraction of intermolecular forces between molecules is known as
  1.    Van der Waal's forces
  2.    covalent bonding
  3.    repulsion force
  4.    hydrogen bonding
 Discuss Question
Answer: Option C. -> repulsion force
Answer: (c).repulsion force
Question 137. Enthalpy change of vaporization can be increased if
  1.    number of protons are reduced
  2.    isotopes are introduced
  3.    catalysts or speed regulators are added
  4.    number of electrons are added
 Discuss Question
Answer: Option D. -> number of electrons are added
Answer: (d).number of electrons are added
Question 138. The surface area to come in contact with the neighboring molecules is smaller in
  1.    2,2 dimethyl propane
  2.    pentane
  3.    Methane
  4.    ethane
 Discuss Question
Answer: Option A. -> 2,2 dimethyl propane
Answer: (a).2,2 dimethyl propane
Question 139. Temporary dipole-induced dipole forces are also called as
  1.    Van der Waal's forces
  2.    electrovalent forces
  3.    electromagnetic forces
  4.    electric forces
 Discuss Question
Answer: Option A. -> Van der Waal's forces
Answer: (a).Van der Waal's forces
Question 140. A mole of liquid can be converted into a mole of gas by
  1.    breaking the bond energy
  2.    increasing the catalyst
  3.    reaching the enthalpy change of vaporization
  4.    decreasing catalyst
 Discuss Question
Answer: Option C. -> reaching the enthalpy change of vaporization
Answer: (c).reaching the enthalpy change of vaporization

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