Chemistry 1992 WAEC Past Questions

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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 (5) WAEC 1992

The following acids are monobasic except

A. methanoic acid
B. dioxonitrate lll acid
C. ethanedioic acid
D. oxochlorate (l) acid
E. hydrobromic acid

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The reactions ethyne are mainly

A. substitution reactions
B. addition reactions
C. addition polymerization
D. catalytic hydrogenation
E. catalytic halogenation

View Answer & Discuss (1) WAEC 1992

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

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The halide used widely in photography is

A. ammonium chloride
B. calcum chloride
C. silver bromide
D. sodium brmide
E. aluminium fluroide

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Chemistry 1992 WAEC Past Questions

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