Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
The molar specific heat at a constant pressure of an ideal gas is $(7/2)R$. The ratio of specific heat at constant pressure to that at constant volume is:
Select the option including all sexually transmitted diseases.
The temperature inside a refrigerator is $t_2^\circ\text{C}$ and the room temperature is $t_1^\circ\text{C}$. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be:
A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then:
If $Q$, $E$ and $W$ denote respectively the heat added, change in internal energy and the work done in a closed cyclic process, then
The product 'X' in the below mentioned reaction is:
Which of the following regions of the globe exhibits highest species diversity?
An ideal gas is compressed to half its initial volume by means of several processes. Which of the following processes results in the maximum work being done on the gas?
4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is:
A thermodynamic system undergoes a cyclic process $ABCDA$ as shown in Fig. The work done by the system in the cycle is:
A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The work done by the system in the cycle is:
A thermodynamic system is taken through the cycle ABCD as shown in the figure. Heat rejected by the gas during the cycle is:
The molar specific heats of an ideal gas at constant pressure and volume are denoted by $C_P$ and $C_V$, respectively. If $\gamma = \frac{C_P}{C_V}$ and $R$ is the universal gas constant, then $C_V$ is equal to:
The dimensional formula for impulse is:
One mole of an ideal gas goes from an initial state $A$ to the final state $B$ with two processes. It first undergoes isothermal expansion from volume $V$ to $3V$ and then its volume is reduced from $3V$ to $V$ at constant pressure. The correct $(P-V)$ diagram representing the two processes is:
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
In which of the following processes, the heat is neither absorbed nor released by a system?
During an isothermal expansion, a confined ideal gas does $-150\text{ J}$ of work against its surrounding. This implies that:
The internal energy change in a system that has absorbed $2 \text{ kcal}$ of heat and done $500 \text{ J}$ of work is:
The depression in freezing point of 0.01 M aqueous solutions of urea, sodium chloride and sodium sulphate is in the ratio of: