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Chemistry Past Questions

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466

The atom of an element X is represented as \(_z^yX\). The basic chemical properties of X depends on the value of

  • A. Y
  • B. Z
  • C. Y - Z
  • D. Z - Y
View Answer & Discuss (13) JAMB 2008
467

The diagram above represent the electron sub-level for

  • A. carbon
  • B. nitrogen
  • C. oxygen
  • D. flourine
View Answer & Discuss (9) JAMB 2008
468

In the periodic table, the electrical and thermal conductivities are properties of elements that

  • A. decrease across the period and increase down the group
  • B. increase across the period and decrease down the group
  • C. decrease across the period and down the group`
  • D. increase acrosss the period and down the group
View Answer & Discuss (1) JAMB 2008
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469

\( _{11} ^{23}Na + _0^1n → _{11}^{24}Na \)
The reaction above is an example of

  • A. nuclear fission
  • B. nuclear fusion
  • C. artificial transmutation
  • D. beta decay
View Answer & Discuss (17) JAMB 2008
470

Air boiled out of water as steam is richer in

  • A. nitrogen and oxygen
  • B. carbon (IV) oxide and oxygen
  • C. noble gases and carbon (IV) oxide
  • D. oxygen and noble gases
View Answer & Discuss (15) JAMB 2008
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