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2806

Which element contains the greatest number of moles?

  • A. 8 g of Helium
  • B. 48 g of Carbon
  • C. 78 g of Potassium
  • D. 130g of Zinc
  • E. 216g of Sliver
View Answer & Discuss (12) NECO 2001
2807

The position of an element in the Periodic Table is determined by?

  • A. its atomic radius.
  • B. its density.
  • C. its relative atomic mass.
  • D. the number of protons in its atom.
  • E. the number of neutrons in its atoms
View Answer & Discuss (8) NECO 2001
2808
what dose the following equation illustrate? \( ^{238}U_{92} → ^{234}Th_{90} + ^4 He_2 \)
  • A. Artificial radioactivity
  • B. nuclear fission
  • C. nuclear fusion
  • D. radio-decomposition
  • E. spontaneous disintegration
View Answer & Discuss (9) NECO 2001
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2809
Which compound can be used as a reducing agent in a reaction?
  • A. Cl2
  • B. KMnO4
  • C. KCr2O7
  • D. MnO2
  • E. Na2SO3
View Answer & Discuss (4) NECO 2001
2810
Which metal will dissolve in aqueous sodium hydroxide?
  • A. aluminium
  • B. copper
  • C. iron
  • D. sikeer
  • E. tin
View Answer & Discuss (6) NECO 2001
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