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886
When plastics and packaging materials made from chloroethene are burnt in the open, the mixture of gases released into the atmosphere is most likely to contain?
  • A. ethane
  • B. chlorine
  • C. hydrogen chloride
  • D. ethene
View Answer & Discuss (4) JAMB 1995
887
The difference between colloides and and suspensions is brought out clearly by the fact that while colloids?
  • A. do not scatter light, suspensions do
  • B. can be separated by filtration, suspension cannot be so separated
  • C. can be separated by a membrane, suspensions cannot
  • D. do not settle out on standing, suspensions do
View Answer & Discuss (3) JAMB 1995
888

In general, an increase in temperature increases the solubility of a solute in water because?

  • A. more solute molecules collide with each other
  • B. most solutes dissolve with the evoltion of heat
  • C. more solute molecules dissociate at hihger temperatures
  • D. most solutes dissolve with absorption of heat
View Answer & Discuss (8) JAMB 1995
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889
Neutralization involves a reaction between H3O+ and?
  • A. CI-
  • B. OH-
  • C. NO3-
  • D. CO32-
View Answer & Discuss (2) JAMB 1995
890

In the process of silver-plating a metal M, the metal M is the?

  • A. anode and a direct current is used
  • B. cathode and an alternating current is used
  • C. anode and an alternating current is used
  • D. cathode and a direct current is used
View Answer & Discuss (13) JAMB 1995
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