1221. Carbon steel as compared to stainless steel is :
A. Resistant to tarnish and corrosion
B. Harder *
C. More resilient
D. Less brittle
1222. In a balanced hand instrument the cutting edge of the blade is :
A. Parallel to long axis of the handle
B. Perpendicular to long axis of the handle
C. With 2mm of long axis of the handle *
D. Perpendicular to shank
1223. The instrument formula numbers placed on the handle are in the following sequence :
A. Width,lenght,angle *
B. Lenght,width,angle
C. Angle,lenght,width
D. Angle,Width,Lenght
1224. The angle former is a special type of :
A. Chisel
B. Excavator *
C. Hatcher
D. Rotary instrument
1225. A 1% solution of sodium nitrite is a :
A. Bleaching agent
B. Sterilisation solution
C. Disinfectant
D. Antirust agent *
1226. Airturbines will stall at approximate lateral work load of :
A. 4-6 lbs
B. 10-12 ounces
C. 4-6 ounces *
D. They donot stall at all
1227. Powdered gold is :
A. Made by a combination of chemical precipitaltion and atomizations *
B. Made by electrolytic precipitation
C. Made by beating pure gold at high temperatures
D. Made by milling pure gold ingots
1228. Powdered gold wrapped in gold foil is known as :
A. Goldent *
B. Electraloy
C. Mat foil
D. Atomised gold
1229. Direct gold fillings are contraindicated in :
A. Class III cavities
B. Handicapped elderly , very young patient *
C. Class V cavities
D. Filling of excess openings in root canal treated teeth
1230. Commonly used gold foil is :
A. No 2 Foil
B. No 3 Foil
C. No 4 Foil *
D. None of the above