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Chemistry JAMB Past Questions

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1106

An aqueous solution of an inorganic salt gave white precipitate (i) soluble in excess aqueous NaOH (ii) insoluble in excess aqueous NH\(_3\) (iii) with dilute HCl. The cation present in the inorganic salt is?

  • A. Na+
  • B. Ca++
  • C. Zn++
  • D. Al+++
  • E. Pb++
View Answer & Discuss (8) JAMB 1985
1107
Which of the following roles does sodium chloride play in soap preparation? It
  • A. reacts with glycerol
  • B. purifies the soap
  • C. accelerates the decomposition of the fat or oil
  • D. separates the soap from the glycerol
  • E. converts the fatty acid to its sodium salt
View Answer & Discuss (1) JAMB 1985
1108
The function of sulphur during vulcanization rubber is to?
  • A. act as catalyst for the polymerization of rubber molecules
  • B. convert rubber from thermosetting to thermo plastics polymer
  • C. from chains which bind rubber molecules together
  • D. break down rubber polyer
  • E. shorten the chain length of rubber polyer
View Answer & Discuss (4) JAMB 1985
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1109
Which of the following salts when dissolved in water will NOT give the corresponding pH value?
  • A. NaHSO4, pH < 5
  • B. Na2CO3, pH > 8
  • C. Na2Cl,pH = 7
  • D. NaHCO, pH < 6
View Answer & Discuss (17) JAMB 1986
1110

Which of the following is an acidic salt?

  • A. NaHSO4
  • B. Na2SO4
  • C. CH3CO2Na
  • D. Na2S
View Answer & Discuss (10) JAMB 1986
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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