Given below are two statements regarding the use of a bomb calorimeter:
Statement-I: \(\Delta U\) can be measured by bomb calorimeter.
Statement-II: Heat is not transferred from calorimeter to surroundings.
Given below are two statements regarding the use of a bomb calorimeter:
Statement-I: \(\Delta U\) can be measured by bomb calorimeter.
Statement-II: Heat is not transferred from calorimeter to surroundings.
Show Hint
- Both Statement-I and Statement-II are correct
- Both Statement-I and Statement-II are not correct
- Statement-I is correct but Statement-II is not correct
- Statement-I is not correct but Statement-II is correct
The Correct Option is A
Solution and Explanation
Analysis of Each Statement:
Statement-I Analysis: A bomb calorimeter is designed to measure the change in internal energy (\(\Delta U\)) of a reaction that occurs at constant volume. Since no work is done by volume expansion, the heat change measured represents the change in internal energy.
Statement-II Analysis: In a bomb calorimeter, the system is designed to be adiabatic, meaning that ideally, no heat is transferred to or from the surroundings during the measurement. This isolation ensures that the heat measured is only due to the reaction itself.
Top Questions on Thermodynamics
The left and right compartments of a thermally isolated container of length $L$ are separated by a thermally conducting, movable piston of area $A$. The left and right compartments are filled with $\frac{3}{2}$ and 1 moles of an ideal gas, respectively. In the left compartment the piston is attached by a spring with spring constant $k$ and natural length $\frac{2L}{5}$. In thermodynamic equilibrium, the piston is at a distance $\frac{L}{2}$ from the left and right edges of the container as shown in the figure. Under the above conditions, if the pressure in the right compartment is $P = \frac{kL}{A} \alpha$, then the value of $\alpha$ is ____
- JEE Advanced - 2025
- Physics
- Thermodynamics
- A weak acid HA has degree of dissociation x. Which option gives the correct expression of \(pH - pK_a\)?
- JEE Main - 2025
- Chemistry
- Thermodynamics
- The elemental composition of a compound is 54.2%C, 9.2%H, and 36.6%O. If the molar mass of the compound is 132 g/mol, the molecular formula of the compound is:
- JEE Main - 2025
- Chemistry
- Thermodynamics
- How much heat is required to raise the temperature of $ 2 \, kg $ of water from $ 20^\circ C $ to $ 80^\circ C $? (Specific heat capacity of water = $ 4200 \, J/kg^\circ C $)
- BITSAT - 2025
- Physics
- Thermodynamics
- 1 mole of Argon gas is heated at constant pressure from 200 K to 600 K.
If \( C_p = 4\ \text{cal} \cdot \text{deg}^{-1} \cdot \text{mol}^{-1} \), then the change in entropy will be:
(Given \( \ln 3 = 1.09 \))
- AP PGECET - 2025
- Chemical Engineering
- Thermodynamics
Questions Asked in AP EAMCET exam
- If a real valued function \( f: [a, \infty) \to [b, \infty) \) is defined by \( f(x) = 2x^2 - 3x + 5 \) and is a bijection, then find the value of \( 3a + 2b \):
- AP EAMCET - 2024
- Functions
- Let \( \alpha \in \mathbb{R} \). If the line \( (a + 1)x + \alpha y + \alpha = 1 \) passes through a fixed point \( (h, k) \) for all \( a \), then \( h^2 + k^2 = \):
- AP EAMCET - 2024
- general equation of a line
- The length of a metal bar is 20 cm and the area of cross-section is \( 4 \times 10^{-4} \) m\(^2\). If one end of the rod is kept in ice at \( 0^\circ C \) and the other end is kept in steam at \( 100^\circ C \), the mass of ice melted in one minute is 5 g. The thermal conductivity of the metal in Wm\(^{-1}\)K\(^{-1}\) is (Latent heat of fusion = 80 cal/gm)
- AP EAMCET - 2024
- Energy Conservation
- An alternating current is given by \( i = (3 \sin \omega t + 4 \cos \omega t) \) A. The rms current will be:
- AP EAMCET - 2024
- Alternating current
- A lamp is rated at 240V, 60W. When in use the resistance of the filament of the lamp is 20 times that of the cold filament. The resistance of the lamp when not in use is:
- AP EAMCET - 2024
- thermal properties of matter