Film processing l Oral radiology 4th year MCQs for dental students

 

X-ray film processing and image formation l Oral radiology 4th year MCQs for dental students

MCQ on film processing for dental x-ray

Which term best describes the process by which the latent image becomes visible?

a. Reticulation

b. Reduction

c. Activation

d. Preservation

Which of these is the correct processing sequence?

a. Rinse, fix, wash, develop, dry

b. Fix, rinse, develop, wash, dry

c. Develop, rinse, fix, wash, dry

d. Rinse, develop, wash, fix, dry

The basic constituents of the developer solution are

a. reducing agent, activator, preservative, restrainer.

b. reducing agent, acidifier, preservative, restrainer.

c. clearing agent, activator, preservative, restrainer.

d. clearing agent, preservative, hardener, acidifier.

During which step of the processing procedure are the exposed silver halide crystals reduced to metallic silver?

a. Developing

b. Fixing

c. Rinsing

d. Washing

Which ingredient removes the unexposed/undeveloped silver halide crystals from the film emulsion?

a. Acetic acid

b. Potassium bromide

c. Sodium thiosulfate

d. Hydroquinone

Which ingredient causes the emulsion to soften and swell?

a. Acidifier

b. Preservative

c. Restrainer

d. Activator

Chemically, the developer used in an automatic processor contains more _____________ than developer used for manual processing.

a. activator

b. acid

c. preservative

d. hardener

Each of the following should be considered when setting up an ideal darkroom EXCEPT one. Which one is the EXCEPTION?

a. Black walls

b. Location

c. Lighting

d. Size

Which of the following colors of safelight filters is safe for processing all film speeds?

a. Yellow

b. Green

c. Red

d. Blue

What is the appearance of the radiographic image if a film is exposed to a safelight too long?

a. Oxidized

b. Fogged

c. Fixed

d. Attenuated

If X-ray reaches the film, that area will

a. radiolucent

b. radiopaque

c. transparent

d. all of the above

Sensitivity of silver halide crystal is increase by

a. Interstitial silver ions

b. Physical distortion

c. Sulphur compound

d. All of the above

Preservative is

a. Sodium sulphite

b. Sodium carbonate

c. Potassium bromide

d. Benzothiazole

The function of buffers is to

a. Develop pH

b. Maintain pH

c. Increase pH

d. Decrease pH

Restrainer is

a. Potassium bromide

b. Benzothiazole

c. Both of the above

d. None of the above

Which of the following substances is used as hardener in processing?

a. Hydroquinone

b. Sodium sulphide

c. Gluteraldehyde

d. None of the above

Which of the following is not a component of automatic processor?

a. Film slot

b. Drying chambers

c. Film recovery area

d. None of the above

What precaution should be taken while handling the film?

a. Fingernail pressure

b. Bending of film

c. Splashing of fixing solutions

d. All of the above

Drying is done at a temperature of

a. 35˚C

b. 40˚C

c. 99˚C

d. 101˚C

Which of the following substances is used as acidifier?

a. Carboxylic acid

b. Acetic acid

c. Sodium hydroxide

d. HCl