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3856

Which or the following substances is a polypeptide?

  • A. Starch
  • B. Glycogen
  • C. Protein
  • D. Fats
View Answer & Discuss WAEC 2020
3857

Which or the following products could be formed during incomplete combustion of a hydrocarbon.

i.Carbon ii. Hydrogen III. Carbon (Il) oxide

  • A. I only
  • B. I and II only
  • C. I and III only
  • D. II and III only
View Answer & Discuss WAEC 2020
3858

What quantity of electrons is lost when one mole of iron (II) ions is oxidized to iron (III) ?

  • A. 0 mole
  • B. I mole
  • C. 2 moles
  • D. 3 moles
View Answer & Discuss (6) WAEC 2020
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3859

What is the mass of silver deposited when 24,125 C of electricity is passed through a solution or silver salt.

[Ag = 108, IF = 96,500 C ]

  • A. 432g
  • B. 108g
  • C. 54g
  • D. 27g
View Answer & Discuss WAEC 2020
3860

Equal masses of calcium trioxocarbonate(iv) were added to dilute hydrochloric acid at the temperature specified. Under which of the following conditions would the reaction be slowest?

  • A. Calcium trioxocarbonate ( iv ) chips a 20°C
  • B. CalcIum trioxocarbonate (IV) chips at 40°C
  • C. Calcium trioxocarbonate (IV) powder at 20'C
  • D. Calcium trioxocarbonate (IV) powder at 40'C
View Answer & Discuss (1) WAEC 2020
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