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Chemistry 2017 JAMB Past Questions

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21

\(^{226}_{88}Ra\) → \(^x_{86}Rn\) + alpha particle

  • A. 226
  • B. 220
  • C. 227
  • D. 222
View Answer & Discuss (3) JAMB 2017
22
The shape of ammonia molecules is
  • A. trigonal planar
  • B. octahedral
  • C. square planar
  • D. tetrahedral
View Answer & Discuss (1) JAMB 2017
23

The mass of silver deposited when a current of 10A is passed through a solution of silver salt for 4830s is – (Ag = 108 F = 96500(mol-1)

  • A. 54.0g
  • B. 27.0g
  • C. 13.5g
  • D. 108.0g
View Answer & Discuss (3) JAMB 2017
WAEC offline past questions - with all answers and explanations in one app - Download for free
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
24

Tin is unaffected by air at ordinary temperature due to its?

  • A. Low melting point
  • B. Weak electropositive character
  • C. High boiling point
  • D. White lustrous appearance
View Answer & Discuss (6) JAMB 2017
25
Calculate the amount in moles of silver deposited when 9650C of electricty is passed through a solution of silver salt [= 96500 Cmol-1]
  • A. 0.05
  • B. 10.80
  • C. 10.00
  • D. 0.10
View Answer & Discuss (6) JAMB 2017
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts