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Chemistry 2014 JAMB Past Questions

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11

Water is said to be temporarily hard when it contains

  • A. Ca (HCO3)2 and Mg (HCO3)2 salts
  • B. Ca (HCO3)2 and CaCO3 SALTS
  • C. Mg(HCO3)2 and CaSO4 salts
  • D. CaSO4 and Ca(HCO3)2 salts
View Answer & Discuss (21) JAMB 2014
12

On exposure to the atmosphere, a hydrated salt loses its water of crystallization to become anhydrous. This phenomenon is referred to as

  • A. efflorescence
  • B. deliquescence
  • C. hygroscopy
  • D. hydrolysis
View Answer & Discuss (3) JAMB 2014
13

16.55g of lead (ll) trioxonitrate (V) was dissolved in 100g of distilled water at 20oC, calculate the solubility of the solute in moldm-3

[Pb = 207, N = 14, O = 16]

  • A. 0.05 g
  • B. 2.00 g
  • C. 1.00 g
  • D. 0.50g
View Answer & Discuss (13) JAMB 2014
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
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14
The dispersion of a liquid in a liquid medium will give
  • A. an emulsion
  • B. a fog
  • C. a gel
  • D. an aerosol
View Answer & Discuss (4) JAMB 2014
15
The major and most effective way of controlling pollution is to
  • A. improve machinery so that the substances released from combustion are less harmful
  • B. pass strict laws against it by individuals and companies
  • C. educate people on the causes and effects of pollution
  • D. convert chemical wastes to harmless substances before releasing them into the environment
View Answer & Discuss (7) JAMB 2014
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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 Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Download WAEC May/June App - Get all past questions and answers, 100% offline - 43208
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