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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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1961

According to the collision theory of reaction rates, which of the following conditions is not required for two molecules to react? The molecules must

  • A. come into contact without loss of energy on colliding with each other
  • B. collide with enough energy to overcome the activation energy barrier
  • C. collide in an orientation that makes formation of product possible
  • D. possess enough speed to overcome intermolecular forces of attraction
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1962

A weak acid is one which

  • A. is not corrosive
  • B. completely ionizes in water
  • C. does not produce salt with alkali
  • D. slightly ionizes in water
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1963

Which of the following conditions are necessary for the preparation of alkanoates from alkanols and alkanoic acid?

  • A. Water and NaOH
  • B. Conc. H\(_2\)SO\(_4\) and heat
  • C. NaOH and heat
  • D. water and aqueous HCl
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1964

The volume of 22g of CO\(_2\) at stp is equivalent to [C =12, O =16, molar volume at stp = 22.4 dm\(^3\) ]

  • A. 22.0 dm\(^3\)
  • B. 22.4 dm\(^3\)
  • C. 11.2 dm\(^3\)
  • D. 5.6 dm\(^3\)
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1965

Pairs of outermost shell electrons which are not used in bonding are

  • A. lone pairs
  • B. bonding pairs
  • C. valence electrons
  • D. electrovalent electrons
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