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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) C_{V}

b) C_{P}

c) C_{M}

d) C_{B}

**Answer: **C_{V}