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Physics 2003 NECO Past Questions

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41
J.J. Thomson’s model of the atom was abandoned because
  • A. it could not explain the scattering of alpha particles
  • B. it did not account for the neutron
  • C. it did not account for the size of the atom
  • D. it was known as plum-pudding model
  • E. the model was not similar to any observable phenomena
View Answer & Discuss (4) NECO 2003
42
Water in an open container boils at a lower temperature when heated at the top of a mountain than at sea-level because at the top of a mountain
  • A. pressure is increased
  • B. pressure is reduced
  • C. the rays of the sun add more heat to the water
  • D. the saturation vapour pressure of water is higher than at sea-level
  • E. the temperature is lower than at sea-level
View Answer & Discuss (1) NECO 2003
43
The volume of a given mass of gas is 40cm3 at 27° C. What is its volume at 90° C if its pressure remains constant?
  • A. 32.84cm3
  • B. 40.02cm3
  • C. 48.40cm3
  • D. 57.44cm3
  • E. 72.84cm3
View Answer & Discuss (3) NECO 2003
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44
Which of the following statements is NOT true?
  • A. A lead-acid accumulator can deliver a large current because of its very large internal resistance.
  • B. A secondary cell can be recharged.
  • C. As a lead-acid accumulator is being charged, the density of the acid in it increases.
  • D. The chemical action in a primary cell is irreversible.
  • E. The conventional current in a circuit rlows from the positive to the negative terminal of the battery.
View Answer & Discuss NECO 2003
45
A sheet of white paper viewed through blue glass appears blue because
  • A. blue is a primary colour
  • B. the glass absorbs all colours except the blue colour
  • C. the glass reflects blue colour
  • D. the paper reflects blue colour only
  • E. white light is easily absorbed by the glass
View Answer & Discuss (2) NECO 2003
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