Basic Concepts in Thermodynamics

IMPORTANT

Basic Concepts in Thermodynamics: Overview

This Topic covers sub-topics such as Chemical Energy Transformations, Thermodynamic Equilibrium State and, Common Terms in Thermodynamics

Important Questions on Basic Concepts in Thermodynamics

EASY
IMPORTANT

Which of the following are not state functions?

  (I)q+w(II)q (III)w(IV)HTS

MEDIUM
IMPORTANT

During isothermal expansion of an ideal gas, its

                               

EASY
IMPORTANT

For a cyclic process, which of the following is not true?

                               

EASY
IMPORTANT

At constant temperature, for a given mass of an ideal gas

MEDIUM
IMPORTANT

30 g ice at 0°C is mixed with 2 g steam at 100°C. The final temperature of the mixture is.

MEDIUM
IMPORTANT

The total number of intensive properties from the following is _____.
Volume, Molar heat capacity, molarity, Ecello,Gibbs free energy change, Molar mass, Mole

MEDIUM
IMPORTANT

What happens when methane undergoes combustion in systems A and B respectively?

Question Image

MEDIUM
IMPORTANT

Number of intensive properties are:

Ecell, Molarity, Gibbs free energy, Molar mass, Mole, Molar heat capacity?

MEDIUM
IMPORTANT

The graph shown in the figure represent change in the temperature of 5 kg of a substance as it absorbs heat at a constant rate of 42 kJ/min. The latent heat of vaporization of the substance is

Question Image

MEDIUM
IMPORTANT

200 g of ice at -10°C is mixed with 200 g of water at 6°C in a calorimeter. If the specific heat of ice and water are 0.5 and 1.0 cal/g °C respectively and the latent heat of ice is 80 cal/g, the temperature of the mixture in thermal equilibrium in Kelvin is

Round off the answer up to two decimal places.

EASY
IMPORTANT

Is work done intensive or extensive property?

EASY
IMPORTANT

The container that suits the occurence of an isothermal process should made of

EASY
IMPORTANT

Observe the following properties:

Volume, enthalpy, density, temperature, heat capacity, pressure, internal energy.

The number of extensive properties in the above list is

MEDIUM
IMPORTANT

Establish the adiabatic equation PVγ= constant.

EASY
IMPORTANT

What is a thermodynamic system?

EASY
IMPORTANT

Out of three quantities in thermodynamics first law namely Q, dU and W, which one depends on path and which one does not?

EASY
IMPORTANT

Define the boundary of a system.

EASY
IMPORTANT

Define surroundings in thermodynamics.

HARD
IMPORTANT

Three separate reversible processes 1,2 and 3 are carried out with 1 mole of an ideal gas initially at STP. In these processes, the pressure (P) is measured while increasing any one of the quantities volume (V), temperature (T) and number of moles n, keeping the other two constant. Plots of Patm versus X are found to be linear, where X=n or TK or 1/V lit-1. For the processes 1,2 and 3, the numerical values of the slopes m1,m2 and m3 of the P versus X plots are found to follow the order m1>m2>m3, respectively. The correct statement(s) about these processes is/are

MEDIUM
IMPORTANT

Consider a cyclic process PQRP for a system. Among the following, the combination of steps that can never lead to this cyclic process is