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141

An element X with relative atomic mass 16.2 contains two isotopes \(^{16}_{8}\)X with relative abundance of 90% and \(^{m}_{8}\)X with relative abundance of 10%. The value of m is

  • A. 16
  • B. 18
  • C. 12
  • D. 14
View Answer & Discuss (12) JAMB 2001
142

Which of the following statements is correct about the average kinetic energy of the molecules of a gas?

  • A. It increase with increase in pressure
  • B. It increase at constant temperature
  • C. It increase with increase in temperature
  • D. It increase with increase in volume
View Answer & Discuss (7) JAMB 2001
143

The pollution from petroleum spillage in rivers and lakes can best be dispersed by

  • A. Pouring detergents
  • B. Passing of ships through the area
  • C. Pouring organic solvents
  • D. Evaporation
View Answer & Discuss (43) JAMB 2001
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144

Deliquescent substances are used for

  • A. Cooling
  • B. Wetting
  • C. Melting
  • D. Drying
View Answer & Discuss (4) JAMB 2001
145

Pure solvents are obtained by

  • A. Distillation
  • B. Condensation
  • C. Extraction
  • D. Evaporation
View Answer & Discuss (3) JAMB 2001
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