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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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2166

Which of the following reactions represents the change that occurs when a photographic film is exposed to sunlight?

  • A. Ag → Ag+ + e-
  • B. Ag+ + e- → Ag
  • C. 2Ag + Br22 → AgBr
  • D. Ag+ + Br- → AgBr
View Answer & Discuss (2) WAEC 2001
2167

Acidic industrial waste can be treated with

  • A. lime
  • B. brine
  • C. water
  • D. ethanol
View Answer & Discuss (5) WAEC 2001
2168

Waste plastics accumulate in the soil and pollute the environment because plastic materials are

  • A. insoluble in water
  • B. non-biodegradable
  • C. easily affected by heat
  • D. inflammable
View Answer & Discuss (7) WAEC 2001
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
2169
If the relative molecular mass of an element is not a whole number, it can be deduced that the element is
  • A. naturally radioactive
  • B. abundant in nature
  • C. a transition metal
  • D. an isotopic mixture
View Answer & Discuss (1) WAEC 2002
2170
The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?
  • A. 16
  • B. 17
  • C. 18
  • D. 19
View Answer & Discuss (3) WAEC 2002
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts