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2961
How many atoms of chlorine are required to saturate the double bonds of a compound containing a triene?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
  • E. 6
View Answer & Discuss (9) NECO 2009
2962

Which of the following gases is absorbed from the air due to photosynthesis?

  • A. Carbon (II) oxide
  • B. Carbon (IV) oxide
  • C. Nitrogen
  • D. Noble gases
  • E. Oxygen
View Answer & Discuss (3) NECO 2009
2963
X = - log10 H+]

What does X stand for in the expression above?
  • A. Degree of acidity
  • B. Enthalpy change
  • C. Equilibrium constant
  • D. Ionic product of water
  • E. Solubility product
View Answer & Discuss NECO 2009
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2964
During the extraction of iron in the blast furnance, slag is produced using
  • A. carbon
  • B. crylite
  • C. limestone
  • D. oxygen
  • E. sulphur
View Answer & Discuss NECO 2009
2965

Brain tumors can be located by using an isotope of

  • A. carbon - 14
  • B. iodine 131
  • C. technetium 99
  • D. uranium235
  • E. uranium 238
View Answer & Discuss (3) NECO 2009
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