Skip to main content
Sarkari MCQs Government Exam Question Bank
Menu
Question no. 58617

At 600 x 103 N/m2 and 27°C, the molecular volume of any perfect gas will be ____________________?

Select your answer for: At 600 x 103 N/m2 and 27°C, the molecular volume of any perfect gas will be ____________________?
Show answer

Answer: A. 4.17m3/kgmol

Explanation

Using the ideal gas law, the molecular volume of a perfect gas calculates to 4.17 cubic meters. Dividing the universal gas constant by pressure and multiplying by temperature yields this volume. Substituting 600 kPa and 300 K into the equation provides the exact numerical result. The ideal gas equation of state relates pressure, volume, temperature, and moles. Universal gas constant has a standard value of approximately 8.314 Joules per mole Kelvin. Kilomole calculations are standard in engineering thermodynamics for gas mixtures.

Chemical processing plants use gas laws to determine vessel sizing and storage requirements. Combustion analysis requires precise volume calculations at elevated temperatures and pressures. Aerospace engineers apply these principles to predict atmospheric gas expansion properties. Option B overestimates the molecular volume by ignoring correct pressure conversion factors. Option C underestimates the volume due to arithmetic errors in division steps. Option D miscalculates the decimal placement in the resulting ideal gas volume.

Subject
Engineering
Topic
—
Difficulty
medium

Related questions

Q1. Heating a gas against an external pressure while keeping volume constant yields work done equal to__________________?

Select your answer for: Heating a gas against an external pressure while keeping volume constant yields work done equal to__________________?
Show answer

Answer: C. zero

Work done in thermodynamics is defined mathematically as the integral of pressure multiplied by volume change. During an isochoric process where volume remains constant, the volume change differential equals zero. Multip...

Q2. Molecular kinetic energy, expressed in terms of absolute temperature (T), is directly proportional to________________?

Select your answer for: Molecular kinetic energy, expressed in terms of absolute temperature (T), is directly proportional to________________?
Show answer

Answer: A. T

Kinetic theory establishes that temperature is a measure of average molecular energy. The mathematical formula confirms kinetic energy scales linearly with absolute temperature. Doubling the absolute temperature results...

Q3. Allowing a gas vapor to expand through an extremely tiny opening is referred to as__________________?

Select your answer for: Allowing a gas vapor to expand through an extremely tiny opening is referred to as__________________?
Show answer

Answer: E. throttling

Throttling involves expanding a gas or vapor through a tiny orifice without external work transfer. This process is isenthalpic, meaning the enthalpy remains constant before and after the restriction. Passing fluid throu...

Q4. Temperature measurement relies upon_________________?

Select your answer for: Temperature measurement relies upon_________________?
Show answer

Answer: B. zeroth law of thermodynamics

Zeroth law of thermodynamics establishes that thermal equilibrium is transitive among bodies. This principle allows a calibrated thermometer to indicate the temperature of any system in thermal equilibrium with it. There...

Q5. If heat transfer happens reversibly, which property of the working substance undergoes a corresponding change_________________?

Select your answer for: If heat transfer happens reversibly, which property of the working substance undergoes a corresponding change_________________?
Show answer

Answer: D. entropy

Entropy is defined as the integral of reversible heat transfer divided by temperature. Any reversible heat addition or removal directly alters this property. It serves as the definitive state variable quantifying thermal...

Q6. The principle that energy cannot be created or destroyed, only transformed from one modality to another, is derived from_________________?

Select your answer for: The principle that energy cannot be created or destroyed, only transformed from one modality to another, is derived from_________________?
Show answer

Answer: B. first law of thermodynamics

The first law of thermodynamics formally establishes the principle of energy conservation. It states that energy cannot be created nor destroyed, only converted between different forms. This foundational physical law gov...

New!

Mock Test System is now available!

Prepare for your exam with interactive mock tests. Select your subjects, attempt 100 random MCQs against the clock, and see exactly where you stand.

Start Mock Test