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Chemistry JAMB Past Questions

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841
The shape of ammonia molecule is?
  • A. trigonal planar
  • B. octahedral
  • C. square planar
  • D. tetrahedral
View Answer & Discuss (16) JAMB 1994
842

An increase in temperature causes an increase in the pressure of a gas because?

  • A. it decreases the number of collision between the molecules
  • B. the molecules of the gas bombard the walls of the container more frequently
  • C. it increases the number of collision between the molecules
  • D. it causes the molecules to combine
View Answer & Discuss (9) JAMB 1994
843
The number of electrons in the valence shell of an element of atomic number 14 is?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
View Answer & Discuss (3) JAMB 1994
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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844

Which of the following physical properties decreases down a group in the periodic table?

  • A. Atomic radius
  • B. Ionic radius
  • C. Electropositivity
  • D. Electronegativity
View Answer & Discuss (11) JAMB 1994
845
Element X, Y and Z belong to a groups I, V and VII respectively. Which of the following is TRUE about the bond types of XZ and YZ3?
  • A. Both are electrovalent
  • B. Both are covalent
  • C. XZ is electrovalent and YZ3 is covalent
  • D. XZ is covalent and YZ3 is electrovalent
View Answer & Discuss (3) JAMB 1994
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