medical MCQs – Page 128

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

2541. Binder used in Gypsum investment is_________________?
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A. Silica

B. Calcium sulphate monohydrate

C. Cristobolite

D. Quartz

2542. Most ideally elastic among the following_______________?
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A. Condensation silicone

B. Polyether

C. Polysulphide

D. Addition silicone

2543. Alginate impression material is________________?
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A. More mucostatic than ZOE

B. Less mucostatic than ZOE

C. Non-elastic impression material

D. Thermoplastic impression material

2544. Sub surface porosity can be decreased by_______________?
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A. Decreasing the sprue length

B. Increasing the mould temperature

C. Increasing the melting temperature

D. Decreasing the sprue thickness

2545. Best impression material to be used for securing impression after crown preparation_______________?
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A. Elastome

B. Zno paste

C. Alginate

D. Agar

2546. Which of the following component acts as an accelerator in ZOE impression paste ?
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A. Zinc Sulphate & Zinc chloride

B. Zinc chloride & Eugenol

C. Glycerin

D. Zinc Sulphate & Eugenol

2547. Resistance to corrosion in a cobalt-chrome casting is due to presence of_______________?
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A. Cobalt

B. Nickel

C. High quality iron

D. Chrome

2548. Final product in alginate is________________?
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A. Sodium alginate

B. Trisodium phosphate

C. Calcium alginate

D. Potassium alginate

2549. Function of carnauba wax_________________?
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A. Decrease flow at room temperature

B. Decrease toughness

C. To provide a smooth and glossy surface

D. Increase toughness

2550. Impression plaster containing potato starch is called______________?
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A. Soluble plaster

B. Anti expansion solution

C. Die stones

D. Plaster of paris

2551. Cobalt-Chrominum alloys contains_______________?
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A. 30% cobalt and 60% chrominum

B. 60% cobalt and 30% chrominum

C. 20% gold

D. 1% palladium

2552. Most commonly used retarder in gypsum_____________?
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A. Nacl

B. Na2 So4

C. Citrales

D. K<sub>2</sub> So<sub>4</sub>

2553. Agar is prepared from_______________________?
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A. Chemicals

B. Chick cells

C. Bullock heart

D. Sea weed

2554. The advantage of ZOE impression paste_______________?
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A. Does not require special trays

B. Has dimensional stability

C. Is easy manipulation

D. Does not adhere to tissues

2555. Trisodium phosphate in alginate acts are_______________?
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A. Retarder

B. Reactor

C. Accelerator

D. Plasticizer

2556. Wash or corrective impression is done by______________?
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A. Impression paste

B. Rubber base impression material

C. Alginate

D. Impression plaster

2557. Name the accelerator used in Zinc oxide eugenol paste______________?
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A. Olive oil

B. Zinc acetate

C. Linseed oil

D. All of these

2558. Waxes are used for_______________?
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A. Corrective impressions

B. Impression of single tooth

C. None of the above

D. Primary impression

2559. Stages of annealing in order_________________?
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A. Melting point, grain growth, Recrystallization

B. Recrystallization recovery, grain growth

C. Grain Growth Recrystallization recovery

D. Recovery recrystallization grain growth

2560. Glossy smooth margins of a casting are due to_____________?
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A. Incomplete wax elimination

B. Incomplete gas elimination

C. Shrinkage of alloy on cooling

D. Investment breakdown

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