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Chemistry 2013 JAMB Past Questions

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6
The bond formed between two elements with electron configurations 1s2 2s2 2p6 3s2 and 1s2 2s2 2p4 is
  • A. metallic
  • B. covalent
  • C. dative
  • D. ionic
View Answer & Discuss (5) JAMB 2013
7
The constituent of air that acts as a diluent is
  • A. nitrogen
  • B. carbon (IV) oxide
  • C. noble gases
  • D. oxygen
View Answer & Discuss (5) JAMB 2013
8
Steam changes the colour of anhydrous cobalt (ll) chloride from
  • A. white to red
  • B. blue to white
  • C. blue to pink
  • D. white to blue
View Answer & Discuss (4) JAMB 2013
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
9
An example of a hygroscopic substance is
  • A. CuO (S).
  • B. MgCL2(S).
  • C. CaCL2(S).
  • D. NaOH(S).
View Answer & Discuss (11) JAMB 2013
10
The solvent used for removing grease stain is
  • A. turpentine
  • B. ammonia solution
  • C. ethanol
  • D. solution of borax in water
View Answer & Discuss (6) JAMB 2013
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709