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1241
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 (7) JAMB 2013
1242
The constituent of air that acts as a diluent is
  • A. nitrogen
  • B. carbon (IV) oxide
  • C. noble gases
  • D. oxygen
View Answer & Discuss (7) JAMB 2013
1243
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
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1244
An example of a hygroscopic substance is
  • A. CuO (S).
  • B. MgCL2(S).
  • C. CaCL2(S).
  • D. NaOH(S).
View Answer & Discuss (25) JAMB 2013
1245

The solvent used for removing grease stain is

  • A. turpentine
  • B. ammonia solution
  • C. ethanol
  • D. solution of borax in water
View Answer & Discuss (17) JAMB 2013
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