# Thermodynamics · Chemistry · MHT CET

Start Practice## MCQ (Single Correct Answer)

MHT CET 2023 14th May Evening Shift

For a reaction $$\mathrm{A}+\mathrm{B} \rightarrow$$ products $$\Delta \mathrm{H}$$ is $$-84.2 \mathrm{~kJ}$$ and $$\Delta \mathrm{S}$$ is $$-200 \mat...

MHT CET 2023 14th May Evening Shift

Which from following thermodynamic properties is a path function?

MHT CET 2023 14th May Evening Shift

Calculate the PV type of work for the following reaction at 1 bar pressure.
$$\mathrm{\mathop {{C_3}{H_{6(g)}}}\limits_{(150\,mL)} + \mathop {HC{l_{(...

MHT CET 2023 14th May Morning Shift

If enthalpy change for following reaction at $$300 \mathrm{~K}$$ is $$+7 \mathrm{~kJ} \mathrm{~mol}^{-1}$$ find the entropy change of surrounding?
$$\...

MHT CET 2023 14th May Morning Shift

Calculate $$\Delta \mathrm{H}$$ for following reaction, at $$25{ }^{\circ} \mathrm{C}$$.
$$\mathrm{NH}_2 \mathrm{CN}_{(\mathrm{g})}+\frac{3}{2} \mathr...

MHT CET 2023 14th May Morning Shift

Identify false statement regarding isothermal process from following.

MHT CET 2023 13th May Evening Shift

Two moles of an ideal gas expand freely and isothermally from $$5 \mathrm{~dm}^3$$ to $$50 \mathrm{~dm}^3$$. What is the value of $$\Delta H$$ ?...

MHT CET 2023 13th May Evening Shift

Which among the following is intensive and extensive properties respectively?

MHT CET 2023 13th May Evening Shift

An ideal gas absorbs $$210 \mathrm{~J}$$ of heat and undergoes expansion from $$3 \mathrm{~L}$$ to $$6 \mathrm{~L}$$ against a constant external press...

MHT CET 2023 13th May Morning Shift

Which of the following processes exhibits increase in internal energy?

MHT CET 2023 13th May Morning Shift

One mole of an ideal gas performs $$900 \mathrm{~J}$$ of work on surrounding. If internal energy increases by $$625 \mathrm{~J}$$, find the value of $...

MHT CET 2023 13th May Morning Shift

Which of the following temperature values in Fahrenheit $$\left({ }^{\circ} \mathrm{F}\right)$$ is equal to $$50^{\circ} \mathrm{C}$$ ?

MHT CET 2023 13th May Morning Shift

Calculate the work done in the following reaction at $$300 \mathrm{~K}$$ and at constant pressure.
$$\left(\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-...

MHT CET 2023 12th May Evening Shift

Which among the following is NOT the feature of reversible process?

MHT CET 2023 12th May Evening Shift

A gas absorbs $$150 \mathrm{~J}$$ heat and expands by $$300 \mathrm{~cm}^3$$ against a constant external pressure $$2 \times 10^5 \mathrm{~N} \mathrm{...

MHT CET 2023 12th May Evening Shift

Equal masses in grams of $$\mathrm{H}_2, \mathrm{~N}_2, \mathrm{Cl}_2$$, and $$\mathrm{O}_2$$, are enclosed in cylinders separately. If these gases ex...

MHT CET 2023 12th May Morning Shift

If lattice enthalpy and hydration enthalpy of $$\mathrm{KCl}$$ are $$699 \mathrm{~kJ} \mathrm{~mol}^{-1}$$ and $$-681.8 \mathrm{~kJ} \mathrm{~mol}^{-1...

MHT CET 2023 12th May Morning Shift

For reaction, $$\mathrm{CO}_{(\mathrm{g})}+\frac{1}{2} \mathrm{O}_{2(\mathrm{~g})} \longrightarrow \mathrm{CO}_{2(\mathrm{~g})}$$
Which of the followi...

MHT CET 2023 12th May Morning Shift

Calculate amount of methane formed by liberation of $$149.6 \mathrm{~kJ}$$ of heat using following equation.
$$\mathrm{C}_{(\mathrm{s})}+2 \mathrm{H}_...

MHT CET 2023 11th May Evening Shift

Calculate $$\Delta \mathrm{S}_{\text {total }}$$ for the following reaction at $$300 \mathrm{~K}$$.
$$\mathrm{NH}_4 \mathrm{NO}_{3(\mathrm{~s})} \long...

MHT CET 2023 11th May Evening Shift

What is the work done during oxidation of 4 moles of $$\mathrm{SO}_{2(\mathrm{~g})}$$ to $$\mathrm{SO}_{3(\mathrm{~g})}$$ at $$27^{\circ} \mathrm{C}$$...

MHT CET 2023 11th May Evening Shift

Identify the type of system if boiling water is kept in a half filled closed vessel.

MHT CET 2023 11th May Morning Shift

What is the value of increase in internal energy when system does $$8 \mathrm{~J}$$ of work on surrounding by supplying $$40 \mathrm{~J}$$ of heat to ...

MHT CET 2023 11th May Morning Shift

Which among the following is TRUE for isobaric process?

MHT CET 2023 11th May Morning Shift

What is value of PV type of work for following reaction at 1 bar?
$$\underset{(200 \mathrm{~mL})}{\mathrm{C}_2 \mathrm{H}_{4(\mathrm{~g})}}+\underset{...

MHT CET 2023 10th May Evening Shift

A gas absorbs $$200 \mathrm{~J}$$ heat and expands by $$500 \mathrm{~cm}^3$$ against a constant external pressure $$2 \times 10^5 \mathrm{~N} \mathrm{...

MHT CET 2023 10th May Evening Shift

Which among the following pair of properties is intensive?

MHT CET 2023 10th May Evening Shift

If $$8.84 \mathrm{~kJ}$$ heat is liberated for formation of $$3 \mathrm{~g}$$ ethane, calculate its $$\triangle_{\mathrm{f}} \mathrm{H}^{\circ}$$....

MHT CET 2023 10th May Morning Shift

The difference between $$\Delta \mathrm{H}$$ and $$\Delta \mathrm{U}$$ is usually significant for systems consisting of :

MHT CET 2023 10th May Morning Shift

What is change in internal energy when system releases $$8 \mathrm{~kJ}$$ of heat and performs $$660 \mathrm{~J}$$ of work on the surrounding?

MHT CET 2023 10th May Morning Shift

Calculate the final volume when 2 moles of an ideal gas expand from $$3 \mathrm{~dm}^3$$ at constant external pressure 1.6 bar and the work done in th...

MHT CET 2023 9th May Evening Shift

For $$\mathrm{NaCl}_{(\mathrm{s})}$$ enthalpy of solution is $$4 \mathrm{~kJ} \mathrm{~mol}^{-1}$$ and lattice enthalpy is $$790 \mathrm{~kJ} \mathrm{...

MHT CET 2023 9th May Evening Shift

What is the value of $$\Delta H-\Delta U$$ for the following reaction?
$$2 \mathrm{C}_{(\mathrm{s})}+3 \mathrm{H}_{2(\mathrm{~g})} \rightarrow \mathrm...

MHT CET 2023 9th May Evening Shift

An ideal gas expands by $$1.5 \mathrm{~L}$$ against a constant external pressure of $$2 \mathrm{~atm}$$ at $$298 \mathrm{~K}$$. Calculate the work don...

MHT CET 2023 9th May Morning Shift

Which among the following reactions exhibits $$\Delta \mathrm{H}=\Delta \mathrm{U}$$ ?

MHT CET 2023 9th May Morning Shift

An ideal gas expands by performing $$200 \mathrm{~J}$$ of work, during this internal energy increases by $$432 \mathrm{~J}$$. What is enthalpy change?...

MHT CET 2023 9th May Morning Shift

Calculate the value of $$\Delta G$$ for following reaction at $$300 \mathrm{~K}$$.
$$\begin{aligned}
& \mathrm{H}_2 \mathrm{O}_{(\mathrm{s})} \longrig...

MHT CET 2022 11th August Evening Shift

What is the value of temperature in degree Celsius at absolute zero ?

MHT CET 2022 11th August Evening Shift

Calculate the work done when 2 moles of an ideal gas expand from a volume of $$5 \mathrm{~dm}^3$$ to $$7 \times 10^{-3} \mathrm{~m}^3$$ against a cons...

MHT CET 2022 11th August Evening Shift

What is the heat of formation of $$\mathrm{HCl}_{(\mathrm{g})}$$ from following equation?
$$\mathrm{H}_{2(\mathrm{~g})}+\mathrm{Cl}_{2(\mathrm{g})} \r...

MHT CET 2022 11th August Evening Shift

If $$\mathrm{Q}$$ is the heat liberated from the system and $$\mathrm{W}$$ is the work done on the system then first law of thermodynamics can be writ...

MHT CET 2021 24th September Evening Shift

For isochoric process, the first law of thermodynamics can be expressed as

MHT CET 2021 24th September Evening Shift

When certain volume of gas expands against a constant external pressure of $$2.40 \times 10^5 \mathrm{~Pa}$$ at 300 $$\mathrm{K}$$ to $$2.2 \times 10^...

MHT CET 2021 24th September Evening Shift

What is internal energy change when $$62 \mathrm{~J}$$ of work is done on the system and $$128 \mathrm{~J}$$ of heat is transferred to surrounding?...

MHT CET 2021 24th September Morning Shift

A gas is allowed to expand against a constant external pressure of 2.5 bar from an initial volume 'x' L to final volume of 4.5 L. If amount of work do...

MHT CET 2021 24th September Morning Shift

In a process, a system performs $$238 \mathrm{~J}$$ of work on it's surrounding by absorbing $$54 \mathrm{~J}$$ of heat. What is the change in interna...

MHT CET 2021 24th September Morning Shift

When $$\mathrm{x} \mathrm{kJ}$$ heat is provided to a system, work equivalent to $$\mathrm{y} \mathrm{J}$$ is done on it. What is internal energy chan...

MHT CET 2021 23rd September Evening Shift

What is the constant external pressure of an ideal gas when expanded from $$2 \times 10^{-2} \mathrm{~m}^3$$ to $$3 \times 10^{-2} \mathrm{~m}^3$$, if...

MHT CET 2021 23rd September Evening Shift

During a process, system absorbs $$710 \mathrm{~J}$$ of heat and increases the internal energy by $$460 \mathrm{~J}$$. What is the work performed by s...

MHT CET 2021 23rd September Evening Shift

Which among the following is NOT an intensive property?

MHT CET 2021 23th September Morning Shift

A system gives out $$\mathrm{x} \mathrm{~J}$$ of heat and does $$\mathrm{y} \mathrm{~J}$$ of work on it's surrounding. What is the internal energy cha...

MHT CET 2021 23th September Morning Shift

A system does 394 J of work on surrounding by absorbing 701 J heat. What is the change in internal energy of the system?

MHT CET 2021 22th September Evening Shift

Formation of $$\mathrm{NO}_{2(\mathrm{g})}$$ from $$\mathrm{N}_{2(\mathrm{g})}$$ and $$\mathrm{O}_{2(\mathrm{g})}$$ is an endothermic process. Which o...

MHT CET 2021 22th September Evening Shift

What is enthalpy of formation of $$\mathrm{NH}_3$$ if bond enthalpies are as $$(\mathrm{N} \equiv \mathrm{N})=941 \mathrm{~kJ},(\mathrm{H}-\mathrm{H})...

MHT CET 2021 22th September Evening Shift

What is the difference between $$\Delta H$$ and $$\Delta \mathrm{U}$$ for reaction given below at $$298 \mathrm{~K}$$ ?
($$\mathrm{R}=8.314 \mathrm{JK...

MHT CET 2021 22th September Morning Shift

Enthalpy of formation of methane is $$-$$75 kJ/mol. What is the enthalpy change for formation of 24 g of methane?

MHT CET 2021 22th September Morning Shift

The expansion of gas having no opposing force is called as

MHT CET 2021 22th September Morning Shift

1 mole of an ideal gas expands isothermally and reversibly by decreasing pressure form $$210 \mathrm{~kPa}$$ to $$105 \mathrm{~kPa}$$ at $$300 \mathrm...

MHT CET 2021 21th September Evening Shift

When 1 mole of gas is heated at constant volume, the temperature rises form $$273 \mathrm{~K}$$ to $$546 \mathrm{~K}$$. If heat supplied to the gas is...

MHT CET 2021 21th September Evening Shift

What is the value of $$\mathrm{\Delta H-\Delta U}$$ for the formation of 2 moles of ammonia from $$\mathrm{H_{2(g)}}$$ and $$\mathrm{N_{2(g)}}$$ ?...

MHT CET 2021 21th September Evening Shift

Two moles of an ideal gas are expanded isothermally from $$15 \mathrm{dm}^3$$ to $$20 \mathrm{dm}^3$$. If the amount of work done is $$-6 \mathrm{dm}^...

MHT CET 2021 21th September Morning Shift

Find the value of $$-197^\circ$$C temperature in Kelvin.

MHT CET 2021 21th September Morning Shift

Which among the following is NOT an extensive property?

MHT CET 2021 21th September Morning Shift

A gas is allowed to expand in an insulated container against a constant external pressure of 2.5 atm from $$2.5 \mathrm{~L}$$ to $$4.5 \mathrm{~L}$$, ...

MHT CET 2021 21th September Morning Shift

What is the work done when a gas is compressed from 2.5 $$\times$$ 10$$^{-2}$$ m$$^3$$ to 1.3 $$\times$$ 10$$^{-2}$$ m$$^3$$ at constant external pres...

MHT CET 2021 20th September Evening Shift

Calculate heat of formation of $$\mathrm{HCl}$$ gas from following reaction.
$$\mathrm{H}_{2(\mathrm{~g})}+\mathrm{Cl}_{2(\mathrm{~g})} \rightarrow 2 ...

MHT CET 2021 20th September Evening Shift

Calculate difference between $$\Delta \mathrm{H}$$ and $$\Delta \mathrm{U}$$ for following reaction at $$25^{\circ} \mathrm{C}$$ ?
$$\mathrm{C}_2 \mat...

MHT CET 2021 20th September Evening Shift

The change in internal energy of a system depends upon

MHT CET 2021 20th September Morning Shift

Which of the following reactions shows work of compression?

MHT CET 2021 20th September Morning Shift

Calculate change in enthalpy when 39 g acetylene is completely burnt with oxygen and enthalpy of combustion of acetylene is $$-$$1300 kJ/mol.
(At. mas...

MHT CET 2021 20th September Morning Shift

An ideal gas on isothermal reversible compression from 10L to 5L performs 1730J of work at 300 K. Calculate number of moles of gas involved in compres...

MHT CET 2020 16th October Morning Shift

A sample of gas absorbs $$4000 \mathrm{~kJ}$$ of heat and surrounding does $$2000 \mathrm{~J}$$ of work on sample. What is the value of $$\Delta U$$ ?...

MHT CET 2020 16th October Morning Shift

If $$38.55 \mathrm{~kJ}$$ of heat is absorbed, when 6.0 of $$\mathrm{O}_2$$ react $$\mathrm{CIF}$$ according to reaction.
$$2 \mathrm{CIF}(g)+\mathrm{...

MHT CET 2020 16th October Morning Shift

An ideal gas expands isothermally and reversibly from $$10 \mathrm{~m}^3$$ to $$20 \mathrm{~m}^3$$ at $$300 \mathrm{~K}$$, performing $$5.187 \mathrm{...