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156

The following salts are readily soluble in water except

  • A. Na2CO3
  • B. Pb(NO3)2
  • C. KCI
  • D. CuCO3
  • E. PbSO4
View Answer & Discuss (8) WAEC 1992
157
When sucrose is warmed with Fehling's solution
  • A. a silver mirror is produced
  • B. the solution turns milky
  • C. a brick-red precipitate is formed
  • D. there is no precipitate
  • E. a blue coloration is produced
View Answer & Discuss (5) WAEC 1992
158
Which of the following gases will have the highest rate of diffusion under the same conditions? (H = 1, C =12, O = 16, S = 32, CI = 35.5)
  • A. O2
  • B. CI2
  • C. HCI
  • D. H2S
  • E. CO2
View Answer & Discuss (3) WAEC 1992
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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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159
The formula (CH3),3 COH is that of a
  • A. polyhdric alkanol
  • B. secondary alkanol
  • C. tertiary alkanol
  • D. primary alkanol
  • E. trihydric alkanol
View Answer & Discuss (3) WAEC 1992
160

What is the number of oxygen atoms in 32g of the gas? (O = 16, L = 6.0 X 10\(^{23}\) mol\(^{-1}\))

  • A. 3.2 X 10 23
  • B. 6.0 X 1023
  • C. 1.2 X 1024
  • D. 1.6 X 1024
  • E. 2.0 X 1024
View Answer & Discuss (17) WAEC 1992
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