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Chemistry 2019 JAMB Past Questions

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16

SO\(_3\) is not directly dissolved in water in the industrial preparation of H\(_2\)SO\(_4\) by the contact process because

  • A. SO\(_3\) is an acidic gas
  • B. Acid is usually added to water and not water to acid
  • C. The reaction between SO\(_3\) and water is violently exothermic
  • D. SO\(_3\) does not dissolve readily in water
View Answer & Discuss JAMB 2019
17

Which of the following statements does not show Rutherford's account of Nuclear Theory? An atom contains a region

  • A. which contains protons and neutrons
  • B. which is positively charged
  • C. which is massive and can cause deflection of a few projectiles
  • D. which is very large and in which close to 98% of projectiles pass undeflected
View Answer & Discuss (15) JAMB 2019
18

Elements X and Y have electronic configurations 1s\(^2\)2s\(^2\)2p\(^4\) and 1s\(^2\)2s\(^2\)2p\(^6\)3s\(^2\)3p\(^1\) respectively. When they combine, the formula of the compound formed is

  • A. XY
  • B. X\(_2\)Y
  • C. Y\(_2\)X\(_3\)
  • D. X\(_2\)Y\(_3\)
View Answer & Discuss (8) JAMB 2019
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19

By what amount must the temperature of 200cm\(^3\) of Nitrogen at 27°C be increased to double the pressure if the final volume is 150cm\(^3\) (Assume ideality)

  • A. 150°C
  • B. 177°C
  • C. 75°C
  • D. 120°C
View Answer & Discuss (10) JAMB 2019
20

The combustion of carbon(ii)oxide in oxygen can be represented by equation.
2CO + O\(_2\) → 2CO\(_2\)
Calculate the volume of the resulting mixture at the end of the reaction if 50cm\(_3\) of carbon(ii)oxide was exploded in 100cm\(_3\) of oxygen

  • A. 75cm\(^3\)
  • B. 125cm\(^3\)
  • C. 100cm\(^3\)
  • D. 50cm\(^3\)
View Answer & Discuss (14) JAMB 2019
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