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1211
Two metals P and Q are heated through the same temperature difference. If the ratio of the linear expansivities of P to Q is 2:3 and the ratio of their
length is 3: 4 respectively, the ratio of the increase in lengths of P to Q is
  • A. 1:2
  • B. 2:1
  • C. 8:9
  • D. 9:8
View Answer & Discuss JAMB 2012
1212
2000cm3 of a gas is collected at 27oC and 700mmHg. What is the volume of the gas at standard temperature and pressure?
  • A. 1896.5cm3
  • B. 1767.3cm3
  • C. 1676.3cm3
  • D. 1456.5cm3
View Answer & Discuss (3) JAMB 2012
1213

Calculate the temperature change when 500J of heat is supplied to 100g of water

[specific heat capacity of water = 4200JKg\(^{-1}\)k\(^{-1}\)]

  • A. 12.1oC
  • B. 2.1oC
  • C. 1.2oC
  • D. 0.1oC
View Answer & Discuss (12) JAMB 2012
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1214

Which of the following is NOT a factor that can increase the rate of evaporation of water in a lake?

  • A. increase in the pressure of the atmosphere
  • B. rise in temperature
  • C. increase in the average speed of the molecules of water
  • D. increase in the kinetic energy of the molecules of water
View Answer & Discuss (5) JAMB 2012
1215
The quantity of heat energy required to melt completely 1 kg of ice at - 30oC is
[latent heat of fusion = 3.5 x 10 5Jkg -1, specific heat capacity of ice = 2.1x10 3Jkg -1K -1]
  • A. 4.13x10 6J
  • B. 4.13x10 5J
  • C. 3.56x10 4J
  • D. 3.56x10 2J
View Answer & Discuss (3) JAMB 2012
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