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2971
2SO2(g) + O2(g) \( \iff \)2SO3(g)

\( \bigtriangleup H = -395.7kJmol^{-1} \)

In the reaction above, the concentration of 2SO3(g) can be in creased by
  • A. decreasing the pressure
  • B. decreasing the temperature
  • C. the addition of catalyst
  • D. increasing the temperature
View Answer & Discuss (6) JAMB 2013
2972
The principle of column chromatography is based on the ability of the constituents to
  • A. move at different speeds in the column
  • B. dissolve in each other in the column
  • C. react with the solvent in the column
  • D. react with each other in the column
View Answer & Discuss (2) JAMB 2011
2973

If the relative atomic mass of an element is not a whole number, it can be deduced that the element is?

  • A. Naturally radioactive
  • B. abundant in nature
  • C. a transition metal
  • D. an isotopic mixture
View Answer & Discuss (16) JAMB 2009
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2974

MnO4(aq) + 8H + 5Fe2+ \(\to\) Mn2+(aq) + 5Fe3+(aq) + H2O. The oxidation number of maganese in the above reaction changed from

  • A. +7 to +2
  • B. +6 to +2
  • C. +5 to +2
  • D. +4 to +2
View Answer & Discuss (21) JAMB 1994
2975

which of these metals CANNOT replace hydrogen from alkaline solutions?

  • A. Aluminium
  • B. Zinc
  • C. Tin
  • D. Iron
View Answer & Discuss (14) JAMB 1994
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