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Chemistry 2017 JAMB Past Questions

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11
For a general equation of the nature xP + yQ → mR + nS, the expression for the equilibrium constant is
  • A. k [P]x [Q]y
  • B. \(\frac{[P]^x [Q]^y}{[R]^m [S]^n}\)
  • C. \(\frac{[R]^m [S]^n}{[P]^x [Q]^y}\)
  • D. \(\frac{m[R] n[S]}{x[P] y[Q] }\)
View Answer & Discuss JAMB 2017
12
A given mass of gas occupies 2dm3 at 300k. At what temperature will its volume be doubled, keeping the pressure constant?
  • A. 400k
  • B. 480k
  • C. 550k
  • D. 600k
View Answer & Discuss (9) JAMB 2017
13
The oxidation number of iodine in KIO3 is
  • A. +7
  • B. +3
  • C. +5
  • D. +6
View Answer & Discuss (4) JAMB 2017
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14
An isomer of C5H12 is
  • A. 2–ethyl butane
  • B. butane
  • C. 2–methyl butane
  • D. 2–methyl propane
View Answer & Discuss (2) JAMB 2017
15

When few drops of concentrated trioxonitrate(V) acid is added to an unknown sample and wanned an intense yellow colouration is observed. The likely functional group present in the sample is

  • A. NH2RCHCOOH
  • B. CHO
  • C. CO
  • D. CNH2
View Answer & Discuss (2) JAMB 2017
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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