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Questions and Answers
One of the typical objectives of materials selection is to maximise mass.
One of the typical objectives of materials selection is to maximise mass.
False (B)
The Bogue composition is generally accurate to ±0.1 mass%.
The Bogue composition is generally accurate to ±0.1 mass%.
False (B)
Thermosetting plastics can be re-moulded by heating.
Thermosetting plastics can be re-moulded by heating.
False (B)
The rate of penetration of aggressive agents into concrete decreases with an increase in water/cement ratio.
The rate of penetration of aggressive agents into concrete decreases with an increase in water/cement ratio.
Drying shrinkage of concrete is primarily due to the cement paste.
Drying shrinkage of concrete is primarily due to the cement paste.
Screening is used to separate materials based on their chemical composition.
Screening is used to separate materials based on their chemical composition.
Ned Is fully reversible when concrete is rewetted.
Ned Is fully reversible when concrete is rewetted.
The material that is made into sheet products by floating melted glass on a bath of molten tin is silica.
The material that is made into sheet products by floating melted glass on a bath of molten tin is silica.
Martensitic steel gets its high strength from the presence of calcium.
Martensitic steel gets its high strength from the presence of calcium.
Austenite transforms into pearlite when it is cooled from the melt.
Austenite transforms into pearlite when it is cooled from the melt.
The material that contains much more calcium than silicon is cement.
The material that contains much more calcium than silicon is cement.
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