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Calorimetry MCQs: Measurement of ∆U and ∆H
1. Bomb calorimeter is used to determine ____________
a) molar heat capacity
b) heat of combustion
c) rate kinetics
d) affinity
Answer: heat of combustion
2. “c” the specific heat capacity of a substance is given by temperature difference is given by ΔT and the heat energy is given by Q then what is the mass of the substance?
a) Q/cΔT
b) cΔT /Q
c) QcΔT
d) QΔT
Answer: Q/cΔT
3. During the process of conversion of ice into the water, the specific heat capacity is given by
a) 0
b) positive
c) infinity
d) negative
Answer: infinity
4. What is the value of specific heat capacity in the adiabatic process?
a) 0
b) infinity
c) positive
d) negative
Answer: 0
5. When 1 kg of water at 373 k, is converted into steam how much amount of heat energy is required?
a) 22600 KJ
b) 226 KJ
c) 2260 KJ
d) 22.6 KJ
Answer: 2260 KJ
6. The total heat energy utilized for increasing the temperature by 4 degrees Kelvin in a 3 kgs substance is 100 KJ what is the specific heat capacity of that substance?
a) 8.34 KJ/g-k
b) 8.34 KJ/Kg-k
c) 8.34 KJKg-k
d) 8.34 KJ/Kg
Answer: 8.34 KJ/Kg-k
7. The enthalpy, internal energy during a process and change in volume are 500 units, 400 units, and 2 units. What is the pressure that is exerted on the gas during this process?
a) 20 units
b) 80 units
c) 100 units
d) 50 units
Answer: 50 units
8. Bomb calorimeter is __________ in nature.
a) isothermal
b) isochoric
c) isobaric
d) absolute
Answer: isochoric
9. If an exothermic reaction occurs in a Bomb calorimeter then the temperature of the water bath
a) increases
b) decreases
c) remains constant
d) cannot predict
Answer: increases
10. Heat capacity of a Bomb calorimeter is given by _______
a) CV
b) CP
c) CM
d) CB
Answer: CV