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Chemistry 2010 JAMB Past Questions

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
11

A noble gas with a high power of fog penetration used in aerodrome beacons is?

  • A. krpton
  • B. argon
  • C. helium
  • D. neon
View Answer & Discuss (17) JAMB 2010
12

Permanent hardness of water can be removed by?

  • A. filtration
  • B. adding slaked lime
  • C. adding caustic soda
  • D. boiling
View Answer & Discuss (4) JAMB 2010
13

Substance employed as drying agents are usually?

  • A. amphoteric
  • B. hygroscopic
  • C. efflorescent
  • D. acidic
View Answer & Discuss (8) JAMB 2010
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
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
14

Calculate the solubility in mol dm-3 of 40g of CuSO4 dissolved in 100g of water at 120°C?
[Cu = 64, S = 32, O = 16]

  • A. 4.00
  • B. 2.50
  • C. 0.40
  • D. 0.25
View Answer & Discuss (21) JAMB 2010
15

Coffee stains can best be removed by?

  • A. Kerosine
  • B. turpentine
  • C. a solution of borax in water
  • D. ammonia solution
View Answer & Discuss (18) JAMB 2010
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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
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208