ANALYTICAL CHEMISTRY TEST 1 QUESTIONS AND CORRECT ANSWERS

ANALYTICAL CHEMISTRY TEST 1
QUESTIONS AND CORRECT
ANSWERS
ProximateA2AnalysisA2-A2Ans--
ProximateA2AnalysisA2isA2aA2partitioningA2ofA2compoundsA2inA2aA2feedA2intoA2sixA2categori
esA2basedA2onA2theA2chemicalA2propertiesA2ofA2theA2compounds.A2TheA2sixA2categoriesA2
are:
1.A2Moisture
2.A2Ash
3.A2CrudeA2proteinA2(orA2KjeldahlA2protein)
4.A2CrudeA2lipid
5.A2CrudeA2fibre
6.A2Nitrogen-freeA2extractsA2(digestibleA2carbohydrates)

UltimateA2AnalysisA2-A2Ans--
AlsoA2calledA2completeA2analysis.A2AmountsA2ofA2allA2ofA2theA2constituentsA2inA2aA2sample
A2areA2determined.


MacroanalysisA2(OrA2MacroanalyticalA2Method)A2-A2Ans--
AnalysisA2ofA2aA2sampleA2ofA2relativelyA2largeA2sizeA2(usuallyA2greaterA2thanA20·1A2gram);A
2anA2instanceA2ofA2this.


SemimicroanalysisA2-A2Ans--
anyA2analyticalA2methodA2inA2whichA2theA2weightA2ofA2theA2sampleA2isA2betweenA210A2and
A2100A2milligrams.


MicroanalysisA2-A2Ans--
theA2quantitativeA2analysisA2ofA2chemicalA2compoundsA2usingA2aA2sampleA2ofA2aA2fewA2mi
lligrams

UltramicroanalysisA2-A2Ans--
chemicalA2analysisA2(asA2ofA2quantitiesA2ofA2theA2orderA2ofA2aA2fewA2micrograms)A2onA2aA2
scaleA2smallerA2thanA2microanalysis

GravimetricA2AnalysisA2-A2Ans--
GravimetricA2analysisA2isA2aA2techniqueA2throughA2whichA2theA2amountA2ofA2anA2analyteA2
(theA2ionA2beingA2analyzed)A2canA2beA2determinedA2throughA2theA2measurementA2ofA2ma
ss.

VolumetricA2AnalysisA2-A2Ans--
ThisA2methodA2involvesA2theA2measurementA2ofA2volumeA2ofA2aA2solutionA2ofA2knownA2co