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Chemistry 2024 JAMB Past Questions

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6

When Calcium ethynide is decomposed by water, the gas produced is 

  • A. CO
  • B. H\(_2\)
  • C. C\(_2\)H\(_2\)
  • D. CH\(_4\)
View Answer & Discuss (5) JAMB 2024
7

The constituent of petroleum fraction used in surfacing road is

  • A. petrol
  • B. diesel
  • C. lubricating oil
  • D. bitumen
View Answer & Discuss JAMB 2024
8

During the fractional distillation of crude oil, the fraction that distills at 200 - 250\(^0\) C is

  • A. bitumen
  • B. diesel
  • C. kerosene
  • D. petrol
View Answer & Discuss (4) JAMB 2024
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9

A liquid hydrocarbon obtained from fractional distillation of coal tar that is used in the pharmaceutical industry is

  • A. xylene
  • B. benzene
  • C. hexane
  • D. Toluene
View Answer & Discuss (1) JAMB 2024
10

An organic compound contains 53.1% Carbon, 6.2% Hydrogen, 12.4% Nitrogen, and 28.3% Oxygen by mass. What is the molecular formula of the compound if its vapour density is 56.5?   [ C =12, H = 1, N = 14, O = 16]. 

  • A. C\(_5\)H\(_7\)NO\(_2\)
  • B. C\(_5\)H\(_6\)NO\(_2\)
  • C. C\(_3\)H\(_6\)NO\(_2\)
  • D. C\(_3\)H\(_7\)NO\(_2\)
View Answer & Discuss (12) JAMB 2024
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