Chemistry 2019 Past Questions | JAMB

Study the following Chemistry past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

  1. A second alkanol can be oxidized to give an

    • A. alkanone
    • B. alkyne
    • C. alkanoic acid
    • D. alkanal

2. Which of the following will give a precipitate with an aqueous solution of copper (I) chloride?

  • A. But-2-ene
  • B. But-1-ene
  • C. But-2-yne
  • D. But-1-yne

3. The IUPAC name for CH\(_3\)CH\(_2\)COOCH\(_2\)CH\(_3\) is

  • A. methylpropanoate
  • B. ethylethanoate
  • C. ethylpropanoate
  • D. methylethanoate

4.  A certain hydrocarbon on complete combustion at s.t.p produced 89.6dm\(^3\) of CO\(_2\) and 54g of water. The hydrocarbon should be

  • A. C\(_6\)H\(_6\)
  • B. C\(_4\)H\(_{10}\)
  • C. C\(_5\)H\(_{10}\)
  • D. C\(_4\)H\(_6\)

5. 2-methylprop-1-ene is an isomer of

  • A. 3-methyl but-1-ene
  • B. 2-methyl but-1-ene
  • C. but-2-ene
  • D. pent-2-ene

6.  Hydrocarbons which will react with Tollen’s reagent conform to the general formula

  • A. C\(_n\)H\(_{2n}\)
  • B. C\(_n\)H\(_{2n + 2}\)
  • C. C\(_n\)H\(_{2n – 2}\)
  • D. C\(_n\)H\(_{2n + 1}\)OH

7. The IUPAC name of the compound CF 3CHBrCl is

  • A. 2-chloro-2-bromo-1,1,1-trifluoroethane
  • B. 2-bromo-2-chloro-1,1,1-trifluoroethane
  • C. 1-bromo-1-chloro-2,2,2-trifluoroethane
  • D. 1,1,1-trifluoro-2-bromo-2-chloroethane

8. A synthetic rubber is obtained from the polymerization of

  • A. neoprene
  • B. isoprene
  • C. butandiene
  • D. propylene

9. Burning magnesium ribbon in air removes which of the following

(i) oxygen (ii) nitrogen (iii) argon and (iv) carbon(iv)oxide?

  • A. i and iv only
  • B. i, ii, iii and iv only
  • C. i only
  • D. i and ii only

10.  An element used in the production of matches is

  • A. Nitrogen
  • B. Aluminium
  • C. Copper
  • D. Sulphur

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