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1236

The presence of an impurity in substance will cause the melting point to

  • A. be zero
  • B. reduce
  • C. increase
  • D. be stable
View Answer & Discuss (8) JAMB 2013
1237
What volume of carbon (ll) oxide is produced by reacting excess carbon with 10 dm3 of oxygen?
  • A. 5 dm 3
  • B. 20 dm 3
  • C. 15 dm 3
  • D. 10 dm 3
View Answer & Discuss (9) JAMB 2013
1238
The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is
  • A. carbon-14
  • B. phosphorus-32
  • C. cobalt-60
  • D. iodine-131
View Answer & Discuss JAMB 2013
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1239
The shape of the carbon (lV) oxide molecule is
  • A. pyramidal
  • B. linear
  • C. angular
  • D. tetrahedral
View Answer & Discuss (9) JAMB 2013
1240

Which of the following molecules is held together by hydrogen bond?

  • A. CH4
  • B. HBr
  • C. H2SO4
  • D. HF
View Answer & Discuss (2) JAMB 2013
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