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Chemistry 2019 WAEC Past Questions

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO offline past questions - All questions, answers & explanations in one app 25712
11

How many moles of carbon(iv)oxide contains 16.0g of oxygen?

[ C = 12.0, O = 16.0 ]

  • A. 0.20 mol
  • B. 0.25 mol
  • C. 0.40 mol
  • D. 0.50 mol
View Answer & Discuss (3) WAEC 2019
12

Stoichiometry is based on the law?

  • A. multiple proportion
  • B. constant composition
  • C. conservation of energy
  • D. conservation of mass
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13

What is the percentage by mass of H in  CH3COOH

  • A. 1.7%
  • B. 5.0%
  • C. 6.7%
  • D. 7.1%
View Answer & Discuss (9) WAEC 2019
NECO offline past questions - All questions, answers & explanations in one app 25712
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14

Which of the following compounds has coordinate bonds in its structure?

  • A. Al\(_2\)Cl\(_6\)
  • B. MgCl\(_2\)
  • C. AgCl
  • D. NaCl
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15

The name of the compound CH\(_3\)C(CH\(_3\))\(_2\)CH\(_2\)CH\(_2\)CH\(_3\)

  • A. 2 - methyl butane
  • B. 2,2 - dimethyl butane
  • C. 2 - methyl pentane
  • D. 2,2 - dimethyl pentane
View Answer & Discuss (6) WAEC 2019
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