Description : Blowing Air with open pipe is an example of – (1) isothermal process (2) isochroric process (3) Isobaric process (4) Adiabatic process
Last Answer : (3) Isobaric process Explanation: When air is suddenly exhaled out into a larger volume through the narrow opening, air undergo adiabatic expansion. So blowing air is an adiabatic process. But since it is open pipe, the pressure inside and pressure outside remains same.
Description : The propagation of sound waves in a gas involves – (1) Adiabatic compression and rarefaction (2) Isothermal compression and rarefaction (3) Isochoric compression and rarefaction (4) Isobaric compression and rarefaction
Last Answer : (1) Adiabatic compression and rarefaction Explanation: Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the ... . Through solids, however, it can be transmitted as both longitudinal waves and transverse waves.
Last Answer : (1) Adiabatic compression and rarefaction Explanation: Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within ... is transmitted through gases, plasma, and liquids as longitudinal waves, also called compression waves.
Description : The propagation of sound waves in a gas involves (1) adiabatic compression and rarefaction (2) isothermal compression and rarefaction (3) isochoric compression and rarefaction (4) isobaric compression and rarefaction
Last Answer : adiabatic compression and rarefaction
Description : Change of state namely evaporation condensation, freezing and melting is an __________ process. (A) Isothermal (B) Adiabatic (C) Isobaric (D) Isochoric
Last Answer : (A) Isothermal
Description : PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process. (A) Isothermal (B) Isentropic (C) Isobaric (D) Adiabatic
Last Answer : (D) Adiabatic
Description : Heating of water under atmospheric pressure is an __________ process. (A) Isochoric (B) Isobaric (C) Adiabatic (D) Isothermal
Last Answer : (B) Isobaric
Description : The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process. (A) Isobaric (B) Isothermal (C) Adiabatic (D) None of these
Last Answer : (B) Isothermal
Description : In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process. (A) Isothermal (B) Isobaric (C) Polytropic (D) Adiabatic
Description : Which of the following non-flow reversible compression processes require maximum work? (A) Adiabatic process (B) Isothermal process (C) Isobaric process (D) All require same work
Last Answer : (A) Adiabatic process
Description : When the expansion of compression of gas takes place without transfer of heat or from the gas the process is called; a. Isometric process b. Isothermal process c. Isobaric process d. Adiabatic process
Last Answer : Adiabatic process
Description : Another name of reversible adiabatic process a. Isentropic Process b. Isometric Process c. Isobaric Process d. Isothermal Process
Last Answer : Isentropic Process
Description : Represent Isobaric, Isochoric, Isothermal, Adiabatic process on P-V and T-S diagram.
Last Answer : Isobaric process Isothermal process Isochoric process Adiabatic process:
Description : Which of the following engines is the most efficient? a. Isobaric expansion b. Adiabatic compression c. Adiabatic expansion d. Isothermal expansion
Last Answer : Isobaric expansion
Description : The boiling of water into steam in an open container is an example of a/an _________ process. a. adiabatic b. isochoric c. isobaric d. zero work
Last Answer : isobaric
Description : Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of – (1) Open system (2) Closed system (3) Isobaric system (4) Isothermal system
Last Answer : (1) Open system Explanation: When heated, ammonlinm chloride decomposes into ammonia and hydrogen chloride. The thermal decomposition of ammonium chloride is a reversible chemical change. On heating ... hydrogen chloride. On cooling, the reaction is reversed and solid ammonium chloride is formed.
Description : Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of (1) Open system (2) Closed system (3) Isobaric system (4) Isothermal system
Last Answer : Open system
Description : An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section. (A) Adiabatic (B) Isothermal (C) Isentropic (D) Isochoric
Description : A cycle tyre bursts suddenly. This represents an – (1) Isothermal process (2) Adiabatic process (3) Isochoric process (4) Isoboric process
Last Answer : (2) Adiabatic process Explanation: When a tyre bursts suddenly energy is not immediately transferred between the system and the surrounding. So the process is adiabatic. There sudden expansion of its air ... tyre is cooled. In adiabatic process, heat neither enters the system nor leaves the system.
Description : A cycle tyre bursts suddenly. This represents an : (1) Isothermal process (2) Adiabatic process (3) Isochoric process (4) Isoboric process
Description : Melting of ice is an example of an __________ process. (A) Adiabatic (B) Isothermal (C) Isometric (D) None of these
Description : What is polytropic process ? Under what conditions it approaches isobaric, isothermal, and isometric process ? In which reversible process no work is done ?
Last Answer : A polytropic process is one that follows the equation pun = constant (index n may have values from – oc to + oo. This process approaches isobaric when n = 0, isothermal when n = 1, and isometric when n = . No work is done in isometric process.
Description : In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible __________ process. (A) Isobaric (B) Isothermal (C) Isentropic (D) Isometric
Last Answer : (A) Isobaric
Description : In __________ process, there is an increase in entropy with no degradation of energy. (A) Isothermal expansion (B) Isochoric heat addition (C) Polytropic expansion (D) Isobaric heat addition
Last Answer : (A) Isothermal expansion
Description : Most cooking activities involve _________ process. a. Isochoric b. Isothermal c. Isobaric d. Isovolumic
Last Answer : Isobaric
Description : _________ is a thermodynamic potential that measures the “useful” or process-initiating work obtainable from an isothermal, isobaric thermodynamic system. a. Du-Pont Potential b. Gibbs free energy c. Rabz-Eccles Energy d. Claussius Energy
Last Answer : Gibbs free energy
Description : What is a process during which the specific volume remains constant? A. Isobaric process B. Isothermal process C. Isochoric or isometric process D. Isovolumetric process
Last Answer : Isochoric or isometric process
Description : What is a process during which the pressure remains constant? A. Isobaric process B. Isothermal process C. Isochoric process D. Isometric process
Last Answer : Isobaric process
Description : What is a process during which the temperature remains constant? A. Isobaric process B. Isothermal process C. Isochoric process D. Isometric process
Last Answer : Isothermal process
Description : If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the (A) Process must be isobaric (B) Temperature must decrease (C) Process must be adiabatic (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : It is a process during which the pressure remains constant a. Adiabatic b. Isentropic c. Isobaric d. Isotropic
Description : An adiabatic process in which there is no change in system enthalpy but for which there is a significant decrease in pressure is called _____. A. Isochoric process B. Isobaric process C. Throttling process D. Quasistatic process
Last Answer : Throttling process
Description : If there is no heat transferred during the process, it is called a ______ process. A. Static B. Isobaric C. Polytropic D. Adiabatic
Last Answer : Adiabatic
Description : In a single stage reciprocating air compressor, the work done on air to compressor is from suction pressure to delivery pressure will be minimum when the compression is A. Isothermal process B. Adiabatic process C. Polytropic process D. Constant pressure process.
Last Answer : ANSWER : A
Description : Sound waves propagation in air exemplifies an __________ process. (A) Adiabatic (B) Isothermal (C) Isometric (D) None of these
Last Answer : (A) Adiabatic
Description : Generation of heat by friction is an example of a/an __________ change. (A) Isothermal (B) Irreversible (C) Adiabatic (D) Reversible
Last Answer : (B) Irreversible
Description : A Carnot cycle consists of the following steps: (A) Two isothermal and two isentropic (B) Two isobaric and two isothermal (C) Two isochoric and two isobaric (D) Two isothermals and two isochoric
Last Answer : A) Two isothermal and two isentropic
Description : Rankine cycle comprises of two isothermal and two __________ processes. (A) Isobaric (B) Polytropic (C) Isentropic (D) None of these
Last Answer : (D) None of these
Description : Joule-Thomson experiment is (A) Isobaric (B) Adiabatic (C) Isenthalpic (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : A ______ is a flow in which the gas flow is adiabatic and frictionless and entropy change is zero. A. Isentropic flow B. Isobaric flow C. Steady flow D. Uniform flow
Last Answer : Isentropic flow
Description : When a gas in a vessel expands, its internal energy decreases. The process involved is (A) Reversible (B) Irreversible (C) Isothermal (D) Adiabatic
Last Answer : (A) Reversible
Description : In polytropic process (PV n = constant), if n = 1; it means a/an __________ process. (A) Adiabatic (B) Reversible (C) Isothermal (D) None of these
Last Answer : (C) Isothermal
Description : PVy = constant, holds good for an isentropic process, which is (A) Reversible and isothermal (B) Isothermal and irreversible (C) Reversible and adiabatic (D) Adiabatic and irreversible
Last Answer : C) Reversible and adiabatic
Description : In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible __________ process. (A) Adiabatic (B) Isometric (C) Isentropic (D) Isothermal
Last Answer : (B) Isometric
Description : In case of an __________ process, the temperature of the system increases. (A) Isothermal compression (B) Isothermal expansion (C) Adiabatic expansion (D) Adiabatic compression
Last Answer : (D) Adiabatic compression
Description : In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________ process. (A) Isothermal (B) Adiabatic (C) Isentropic (D) Polytropic
Last Answer : (C) Isentropic
Description : Work done by a/an __________ process is determined by ∫p. dv (A) Adiabatic (B) Quasi-static (C) Isothermal (D) Isentropic
Last Answer : (B) Quasi-static
Description : A thermodynamic process in which entropy is conserved a. isentropic b. adiabatic c. isothermal d. polytropic
Last Answer : isentropic
Description : When the expansion of compression of gas takes place without transfer of heat to or from the gas the process is called a. reversible b. adiabatic c. polytropic d. isothermal
Last Answer : adiabatic
Description : A process, in which the temperature of the working substance remains constant during its expansion or compression, is called A. isothermal process B. hyperbolic process C. adiabatic process D. polytropic process
Last Answer : Answer: A