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Chemistry Past Questions

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251

When sugar is dissolved in tea, the reaction is always accomplished by

  • A. positive change in entropy
  • B. negative entropy change
  • C. no entropy change
  • D. a minimum entropy change
View Answer & Discuss (25) JAMB 2003
252

Which of the following is an electrolyte?

  • A. Alcohol
  • B. Sodium acetate solution
  • C. Solid potassium hydroxide
  • D. Mercury
View Answer & Discuss (10) JAMB 2003
253

Chlorine gas is prepared in the laboratory by

  • A. adding concentrated hydrochloric acid to solid manganese (IV) oxide
  • B. aciding concentrated tetraoxosulphate (VI) acid to solid sodium chloride
  • C. dropping concentrated hydrochloric acid onto potassium tetraoxomanganate (VI) crystals
  • D. aciding concentrated tetraoxosulphate (VI) acid to hydrochloric acid
View Answer & Discuss (15) JAMB 2003
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254

Metals of the first transition series have special properties which are different from those of groups I and II elements because they have partially filled

  • A. s orbitals
  • B. p orbitals
  • C. d orbitals
  • D. f orbitals
View Answer & Discuss (6) JAMB 2003
255

Hydrogen can be displaced from a hot alkaline solution by?

  • A. Fe
  • B. Cu
  • C. Ca
  • D. Sn
View Answer & Discuss (28) JAMB 2003
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now