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Chemistry Past Questions

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216

A rock sample was added to cold dilute HNO3. The gas evolved was passed into a solution of acidified K2Cr2O7 and the solution turned green. The sample contains

  • A. Cl-
  • B. NO3-
  • C. SO32-
  • D. SO42-
View Answer & Discuss (16) JAMB 2002
217

Which of the following statement is true of a proton?

  • A. The mass of a proton is 1840 times the mass of electron
  • B. the total mass of the protons in a particular nucleus is always half the nuclear size
  • C. The mass of a proton is one - twelfth the molar mass of carbon
  • D. The mass of a proton is 1.0008g
View Answer & Discuss (16) JAMB 2002
218

Which of the following chloride would exhibit the least ionic character?

  • A. MgCl2
  • B. CaCl2
  • C. LiCl
  • D. AlCl3
View Answer & Discuss (9) JAMB 2002
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219

A fixed mass of gas has a volume of 92\(cm^3\) at 3ºC. What will be its volume at 18ºC if the pressure remains constant?

  • A. 15.3cm3
  • B. 87.3cm3
  • C. 552.0cm3
  • D. 97.0cm3
View Answer & Discuss (26) JAMB 2002
220

The processes which return carbon (IV) oxide to the atmosphere include

  • A. respiration, decay and combustion
  • B. photosynthesis, respiration and transpiration
  • C. ozone depletion, combustion and decay
  • D. photosynthesis, decay and respiration
View Answer & Discuss (2) JAMB 2002
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