Mcqs with answers for MRB entrance exam
Colour based mcqs
1. Gas cylinders-colour code
Oxygen black with white shoulder
Nitrogen black
Nitrous oxide blue
Carbon di oxide brownish gray
Ethylene purple
Helium brown
Cyclopropane orange
2. Drugs - discoloured urine
Rifampicin orange
Phenindione orange
Phenolphthalein pink
Nitrofurantoin brown
3. Hemoglobin derivatives
Oxy hemoglobin.dark red
Carboxy hemoglobin .cherry red
Deoxy hemoglobin .purple
Meth hemoglobin .dark brown
Sulph hemoglobin . green
4. Coloured complex in periodontics
5. Metallic oxides added to dental porcelain colour
Copper oxide green
Iron brown
Manganese lavender
Cobalt blue
Nickel brown
Titanium yellowish brown
6. cephalogram visits colour code
Pre treatment black
Progress blue
End of treatment red
Retention green
7. Fluid wax technique
waxes used- scientist name- colour
Iowa wax -Smith -white
Korecta No. 4 wax Applegate- orange
Adaptol - Nathan g. Kaye - green
H.L physiologic paste - C.s. Harkins- yellow white.
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