Post-UTME Physics 2019 Objective — Question 1
Question 1 of 20 from the Post-UTME Screening (Post-UTME) Physics 2019 Objective paper, with the correct answer and a full explanation.
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The pressure of a given mass of gas in a closed container at a temperature of 27C is 0.1 x 10^4 Nm-2. What is the pressure of the gas when the temperature is raised to 387C?
- A. 1.29 x 10^4 Nm-2Correct
- B. 0.22 x 10^4 Nm-2
- C. 0.45 x 10^4 Nm-2
- D. 1.43 x 10^4 Nm-2
Explanation
By Gay-Lussac's law (constant volume), P2 = P1 x T2/T1 = 0.1x10^4 x 660/300, giving a pressure close to 1.29x10^4 Nm-2.
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