1. Size of the bitewing film is

A. 32×41mm
B. 22×35mm
C. 57×76mm
D. 75×90mm

Ans. A

2. X ray films are insensitive to which light

A. Yellow and red
B. Red
C. White
D. Blue and green

Ans. A
X ray films are sensitive to green and blue light. They are less sensitive to yellow and red light. Accordingly, the red filter, which does not affect open film but permits one to see well enough to work in the area is recommended as a safelight.

3. Penny test is the quality assurance test to detect

A. Fixer depletion
B. Unsafe illumination
C. Machine malfunction
D. Contaminated solution

Ans. B

4. Which of the following is the bulb watt used in dark room

A. 5 watts
B. 10 watts
C. 15 watts
D. 20 watts

Ans. C

5. Initiator in developing solution is

A. Acetic acid
B. Sodium thiosulphate
C. Hydroquinone
D. Potassium bromide

Ans. C

6. The ingredient of the fixing solution of the xray is

A. Hydroquinone
B. Elon
C. Sodium bisulphate
D. Acetic acid

Ans. D

7. pH at which fixer solution acts is

A. 3-4
B. 4-4.5
C. 4.5-5
D. 6-7

Ans. B

8. When solution temperature is 68°F (20°C) recommended time of developing a x ray film

A. 4 min
B. 4.5 min
C. 5 min
D. 6 min

Ans. C

9. In steps in developing film first step is

A. Stirring the solution
B. Washing of film
C. Dip in developer
D. Dip in fixer

Ans. A

10. Light radiography film is due to

A. Overdeveloping
B. Overfixing
C. Directly putting in fixer
D. Exposure to sunlight

Ans. B