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Chemistry Past Questions

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266

Ethanol reacts with excess acidified K\(_2\)Cr\(_2\)O\(_7\) to produce

  • A. ethanedioic acid
  • B. ethanal
  • C. ethylethanoate
  • D. ethanoic acid
View Answer & Discuss (9) JAMB 2003
267
A compound contains 40.0% carbon 6.7% hydrogen and 53.3% oxygen. If the molar mass of the compound is 180, find the molecular formula.
[H = 1, C = 12, O = 16]
  • A. CH2O
  • B. C3H6O3
  • C. C6H12O6
  • D. C6H12O3
View Answer & Discuss (5) JAMB 2003
268

The process by which atoms are rearranged into different molecular structure in the petroleum refining process is referred to as

  • A. catalytic cracking
  • B. hydrocracking
  • C. polymerization
  • D. reforming
View Answer & Discuss JAMB 2003
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269

Which of the following is found in cotton

  • A. Starch
  • B. Cellulose
  • C. Fat
  • D. Oil
View Answer & Discuss (8) JAMB 2003
270

The principal constituent of natural gas is

  • A. methane
  • B. ethane
  • C. propane
  • D. butane
View Answer & Discuss (4) JAMB 2003
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