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1496
How many isomeric forms are there for the molecular formula C3H6Br2?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
  • E. 5
View Answer & Discuss (13) JAMB 1983
1497
A piece of burning sulphur will continue to burn in a gas jar of oxygen to give misty fumes which readily dissolved in water. The resulting liquid is
  • A. sulphur (VI) trioxide
  • B. tetraoxosulphate (VI) acid
  • C. trioxosulphate (IV) acid
  • D. dioxosulphate (II) acid
  • E. hydrogen sulphide
View Answer & Discuss (7) JAMB 1983
1498
Sodium sulphate decahydrate (Na2SO4.10 H2O) on exposure to air loses all its water of crystallization.
The process of loss is known as
  • A. efflorescence
  • B. hygroscopy
  • C. deliquescence
  • D. effervescence
  • E. dehydration
View Answer & Discuss (1) JAMB 1983
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1499
Which of the following happens during the electrolysis of molten sodium chloride?
  • A. Sodium ion loses an electron
  • B. Chlorine atom gains an electron
  • C. Chlorine ion gains an electron
  • D. Sodium ion is oxidized
  • E. Chloride ion is oxidized
View Answer & Discuss (6) JAMB 1983
1500

Crude petroleum pollutant usually seen on some Nigerian creeks and waterways can be dispersed or removed by

  • A. heating the affected parts in order to boil off the petroleum
  • B. mechanically stirring to dissolve the petroleum in water
  • C. pouring organic solvents to dissolve the petroleum
  • D. spraying the water with detergents
  • E. cooling to freeze out the petroleum
View Answer & Discuss (14) JAMB 1983
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