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Chemistry 2002 WAEC Past Questions

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11
Which of the following statements about soapless detergents is correct? They
  • A. lather readily with hard water
  • B. increase the surface tension of water
  • C. cause hydrolysis of salts in water
  • D. from a curdy precipitate with soft water
View Answer & Discuss WAEC 2002
12
If the relative molecular mass of an element is not a whole number, it can be deduced that the element is
  • A. naturally radioactive
  • B. abundant in nature
  • C. a transition metal
  • D. an isotopic mixture
View Answer & Discuss (1) WAEC 2002
13
The atom of an element X is represented as \(^y_z X\). The basic chemical properties of X depend on the value of
  • A. Y
  • B. Z
  • C. Y - Z
  • D. Z - Y
View Answer & Discuss (4) WAEC 2002
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14

The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?

  • A. 16
  • B. 17
  • C. 18
  • D. 19
View Answer & Discuss (1) WAEC 2002
15
A hydrogen atom which has lost an electron contains
  • A. one proton only
  • B. one neutron only
  • C. one proton and one neutron
  • D. one proton, one electronic and one neutron
View Answer & Discuss (5) WAEC 2002
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