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Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-PX-EN-0011 markL1 FoundationCalculatorProcesses
A gas expands from 1.0×10−31.0\times10^{-3} m³ to 3.0×10−33.0\times10^{-3} m³ at a constant pressure of 1.0×1051.0\times10^5 Pa. Calculate the work done by the gas in J.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-0021 markL1 FoundationCalculatorProcesses
500500 J of heat is supplied to a gas, which does 200200 J of work. Calculate the increase in internal energy in J.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-0041 markL1 FoundationCalculatorEfficiency
Calculate the maximum theoretical efficiency of an engine working between 800800 K and 300300 K.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-0061 markL1 FoundationCalculatorProcesses
In an isothermal change of an ideal gas
Choose one option

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-0081 markL1 FoundationCalculatorp–V cycles
The net work done per cycle by an engine is given by
Choose one option

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-X011 markL1 FoundationCalculatorProcesses
A gas at 2.0×1052.0\times10^5 Pa expands isothermally from 1.01.0 L to 4.04.0 L. Calculate its final pressure in units of 10510^5 Pa.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-X021 markL1 FoundationCalculatorEfficiency
Calculate the maximum theoretical efficiency of an engine working between 600600 K and 300300 K.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-X041 markL1 FoundationCalculatorEfficiency
An engine takes in 10001000 J of heat and does 300300 J of work per cycle. Calculate the heat rejected per cycle, in J.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-0032 marksL2 StandardCalculatorProcesses
Air (γ=1.4\gamma=1.4) at 1.0×1051.0\times10^5 Pa is compressed adiabatically to half its volume. Calculate the final pressure in units of 10510^5 Pa.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-0051 markL2 StandardCalculatorEfficiency
A heat pump delivers 30003000 J of heat to a house for every 10001000 J of work. Calculate its coefficient of performance.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-X032 marksL2 StandardCalculatorEfficiency
Using COPmax⁡=THTH−TCCOP_{\max}=\frac{T_H}{T_H-T_C}, calculate the maximum coefficient of performance of a heat pump moving heat from 270270 K outside to a house at 300300 K.

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Salam Academy Original Practice · Proposed mark scheme
SA-PX-EN-0072 marksL3 ExamCalculatorEfficiency
A refrigerator removes 20002000 J from the food compartment using 500500 J of work. Calculate how much heat it releases into the kitchen, in J.

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Salam Academy Original Practice · Proposed mark scheme