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Chemistry 1992 WAEC Past Questions

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6

If the volume of a given mass of gas at 298 K and pressure of 205.2 x 10\(^3\) Nm\(^{-2}\) is 2.12dm\(^3\), what is volume of the gas at s.t.p? (Standard pressure = 101.3 x 10\(^3\) Nm\(^{-2}\), Standard temperature = 273K)

  • A. 39.3dm 3
  • B. 22.4dm3
  • C. 4.93dm3
  • D. 3.93dm3
  • E. 0.393dm3
View Answer & Discuss (8) WAEC 1992
7
The following acids are monobasic except
  • A. methanoic acid
  • B. dioxonitrate lll acid
  • C. ethanedioic acid
  • D. oxochlorate (l) acid
  • E. hydrobromic acid
View Answer & Discuss WAEC 1992
8
The reactions ethyne are mainly
  • A. substitution reactions
  • B. addition reactions
  • C. addition polymerization
  • D. catalytic hydrogenation
  • E. catalytic halogenation
View Answer & Discuss (2) WAEC 1992
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9
When air is passed through potash and then pyrogallol, the components are noble gases,
  • A. oxygen and carbon (IV) oxide
  • B. oxygen and nitrogen
  • C. nitrogen and water vapour
  • D. water vapour and carbon (IV) oxide
  • E. oxygen and water vapour
View Answer & Discuss (1) WAEC 1992
10
The halide used widely in photography is
  • A. ammonium chloride
  • B. calcum chloride
  • C. silver bromide
  • D. sodium brmide
  • E. aluminium fluroide
View Answer & Discuss WAEC 1992
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