Chemistry JAMB Past Questions

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946

A sample of a substance containing only C and H burns in excess O₂ to yield 4.4g of CO₂
and 2.7 g of H₂O. The empirical formula of a substance is?

(C = 12, O = 16, H = 1)

A. CH₃
B. CH₂
C. CH₄
D. C₂H₂₄

View Answer & Discuss (25) JAMB 1997

947

An undesirable paraffin in the petroleum industry which is particularly prone to knocking is?

A. iso-octane
B. n-heptane
C. iso-heptane
D. n-octane

View Answer & Discuss (5) JAMB 1997

948

The reaction of an alkanol with an alkanoic acid in the presence of concentrated H₂SO₄ will produce an?

A. alkanal
B. alkanoate
C. alkanone
D. alkyne

View Answer & Discuss JAMB 1997

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949

The final product of the reaction of ethyne with hydrogen iodide is?

A. CH₃—CHI₂
B. CH₂l—CH₂I
C. CH₃—CI₃
D. CH₂ = CHI

View Answer & Discuss (16) JAMB 1997

950

Synthetic rubber obtained by the polymerization of chlorobutadiene in the presence of sodium is called?

A. teflon
B. isoprene
C. polythene
D. neoprene

View Answer & Discuss (7) JAMB 1997

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