A. Carbon content
B. Silica content
C. Gypsum
D. Copper
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Related Mcqs:
- The product, which is obtained by calcining gypsum under steam pressure at 120-130°C or by dehydrating gypsum in the presence of sodium succinate is_______________?
- A. Alpha – hemihydrates B. Beta – hemihydrates C. Calcium sulphate dihydrate D. Orthorhombic anhydrate...
- Gypsum bonded investment should not be heated over______________?
- A. 700°C B. 1,300°C C. 1,063°C D. 900°C...
- Quartz is added to gypsum bonded investment to______________?
- A. Increase the strength B. Counter balance contraction of gypsum during heating C. aid in hygroscopic expansion D. Increase the shelf life of investment...
- Binder used in Gypsum investment is_________________?
- A. Silica B. Quartz C. Cristobolite D. Calcium sulphate monohydrate...
- The best pickling solution for gypsum bonded investment is_______________?
- A. Hydrochloric acid B. Nitric acid C. Sulphuric acid D. Phosphoric acid...
- A thinner mix of a gypsum bonded investment will_______________?
- A. Produce a smoother casting B. Decrease setting expansion C. Increase setting expansion D. Increase thermal expansion...
- The strength of gypsum prouducts is generally expressed in terms of______________?
- A. Tensile strength B. Wet strength C. Green strength D. compressive strength...
- The strength of the gypsum specimen when the water in excess of that required for the hydrate of the hemihydrate is left in the specimen is called____________?
- A. Dry strength B. Green strength C. Water strength D. Compressive strength...
- Materials which has high compressive strength and low tensile strength is classified with property of________________?
- A. Ductility B. Brittleness C. Malleability D. Resilient...
- ADA specification number of gypsum products are described under____________?
- A. 1 B. 4 C. 12 D. 25...
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