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4646

The fractions of crude oil are best separated by 

  • A. steam distillation
  • B. fractional crystallization
  • C. precipitation
  • D. fractional distillation
View Answer & Discuss (5) JAMB 2025
4647

In the equation above, the expression for the equilibrium constant, k\(_c\) is

  • A. \(\frac{[2XY_3]}{[X_2][3Y_2]}\)
  • B. \(\frac{[X_2][3Y_2]}{2XY_3]}\)
  • C. \(\frac{[XY_3]^2}{[X_2][Y_2]}\)
  • D. \(\frac{[X_2][Y_2]^3}{[XY_3]^2}\)
View Answer & Discuss (8) JAMB 2025
4648

How many molecules are there in 4.0 moles of glucose?

[Avogadro's number = 6.02 x  10\(^{23}\)]

  • A. 1.51 x 10\(^{23}\)
  • B. 2.41 x 10\(^{24}\)
  • C. 24.08 x 10\(^{24}\)
  • D. 1.51 x 10\(^{24}\)
View Answer & Discuss (4) JAMB 2025
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4649

What is the product obtained at the anode in the electrolysis of concentrated sodium chloride using graphite electrode?

  • A. Chlorine gas
  • B. oxygen gas
  • C. water vapour
  • D. hydrogen gas
View Answer & Discuss (4) JAMB 2025
4650

Freons pollution in the air are released from 

  • A. fossil fuel
  • B. aerosol can
  • C. photosynthesis
  • D. organic decay
View Answer & Discuss (8) JAMB 2025
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