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Chemistry Past Questions

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3031
The process that requires the use of hardwater in its operation is
  • A. Tanning
  • B. Bottling
  • C. Laundry
  • D. Dyeing
View Answer & Discuss (20) JAMB 2016
3032
What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution?
[Na=23, O=16, H=1]
  • A. 0.05 moldm-3
  • B. 0.30 moldm-3
  • C. 0.50 moldm-3
  • D. 0.40 moldm-3
View Answer & Discuss (5) JAMB 2016
3033
The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is
  • A. Phosphorus-32
  • B. Cobalt-60
  • C. Carbon-14
  • D. Iodine-131
View Answer & Discuss (13) JAMB 2016
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3034
The compound produced when sodium peroxide is heated with excess sodium is
  • A. Na2CO3
  • B. Na2O
  • C. NaNO2
  • D. NaOH
View Answer & Discuss (7) JAMB 2016
3035
The pollutant that contributes to the depletion of the ozone layer is
  • A. CFCs
  • B. NO2
  • C. SO2
  • D. CO
View Answer & Discuss (4) JAMB 2016
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