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1266
A primary amide is generally represented by the formula
  • A. RCOOR
  • B. RCONH 2
  • C. RCONHR
  • D. RCONR 2
View Answer & Discuss (3) JAMB 2013
1267
Which of the following fraction is used as raw material for the cracking process?
  • A. kerosine
  • B. lubricating oil
  • C. bitumen
  • D. diesel oils
View Answer & Discuss (7) JAMB 2013
1268
An organic compound contains 60% carbon, 13.3% hydrogen and 26.7% oxygen. Calculate the empirical formula
rn(C=12,H =1, O=16)
  • A. C 5H 12O
  • B. C 3H 8O
  • C. C 6H 13O 2
  • D. C 4H 9O
View Answer & Discuss (5) JAMB 2013
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1269

Which of the following methods can be used to obtain pure water from a mixture of sand, water and methanoic acid?

  • A. netralization with NaOHfoolowed by filtration
  • B. neutralization with NaOH followed by distillation
  • C. fractional distillation
  • D. filtration followed by distillation
View Answer & Discuss (19) JAMB 2012
1270
How many atoms are present in 6.0g of magnesium?
[Mg = 24, NA = 6.02 x 1023 mol-1]
  • A. 1.20 x 1022
  • B. 2.41 x 1022
  • C. 1.51 x 1023
  • D. 3.02 x 1023
View Answer & Discuss (8) JAMB 2012
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