Civil FE exam UPDATED ACTUAL Exam
Questions and CORRECT Answers
Gradient - CORRECT ANSWER - vector that points in the direction of maximum rate of
change
Acidity - CORRECT ANSWER - measure of acids in solution
caused by the formation of carbonic acid (H2CO3) from carbon dioxide in the air.
4.5<pH, carbonic acid ionized to form bicarbonate
8.3<pH, carbonate ions form
Alkalinity - CORRECT ANSWER - negative ions
ability of water to neutralize acids (absorb hydrogen ions)
Principal Alkaline ions - CORRECT ANSWER - OH- CO3-- HCO3-
Water hardness - CORRECT ANSWER - positive ions
presence of polyvalent metallic cations
total hardness - CORRECT ANSWER - sum of magnesium and calcium expressed as
mg/L CaCO3
Carbonate hardness - CORRECT ANSWER - cations from dissolution of calcium or
magnesium carbonate and bicarbonate in water
Non carbonate hardness - CORRECT ANSWER - Also called permanent hardness
catiion from calcium and magnesium compounts of sulfate chloride or silicate
, Irons effect in water - CORRECT ANSWER - stains porcelain
brown clothing
titration analysis
Manganese effect in water - CORRECT ANSWER - same as iron
Phosphorus effect in water - CORRECT ANSWER - algae
caloremic digestion methods
Nitrogen effect in water - CORRECT ANSWER - can reach large concentration of
groundwater
can cause blue baby syndrome
algae
water color - CORRECT ANSWER - caused by true color substances
compared to cobolt
turbidity - CORRECT ANSWER - light transmission
total solids - CORRECT ANSWER - residue after evaporation
total suspended solids - CORRECT ANSWER - retained on filter
total dissolved solids - CORRECT ANSWER - pass through standard filter
halogenated compounds - CORRECT ANSWER - carcinogen
Questions and CORRECT Answers
Gradient - CORRECT ANSWER - vector that points in the direction of maximum rate of
change
Acidity - CORRECT ANSWER - measure of acids in solution
caused by the formation of carbonic acid (H2CO3) from carbon dioxide in the air.
4.5<pH, carbonic acid ionized to form bicarbonate
8.3<pH, carbonate ions form
Alkalinity - CORRECT ANSWER - negative ions
ability of water to neutralize acids (absorb hydrogen ions)
Principal Alkaline ions - CORRECT ANSWER - OH- CO3-- HCO3-
Water hardness - CORRECT ANSWER - positive ions
presence of polyvalent metallic cations
total hardness - CORRECT ANSWER - sum of magnesium and calcium expressed as
mg/L CaCO3
Carbonate hardness - CORRECT ANSWER - cations from dissolution of calcium or
magnesium carbonate and bicarbonate in water
Non carbonate hardness - CORRECT ANSWER - Also called permanent hardness
catiion from calcium and magnesium compounts of sulfate chloride or silicate
, Irons effect in water - CORRECT ANSWER - stains porcelain
brown clothing
titration analysis
Manganese effect in water - CORRECT ANSWER - same as iron
Phosphorus effect in water - CORRECT ANSWER - algae
caloremic digestion methods
Nitrogen effect in water - CORRECT ANSWER - can reach large concentration of
groundwater
can cause blue baby syndrome
algae
water color - CORRECT ANSWER - caused by true color substances
compared to cobolt
turbidity - CORRECT ANSWER - light transmission
total solids - CORRECT ANSWER - residue after evaporation
total suspended solids - CORRECT ANSWER - retained on filter
total dissolved solids - CORRECT ANSWER - pass through standard filter
halogenated compounds - CORRECT ANSWER - carcinogen
