Building Materials - Section 8 Multiple Questions and Answers.




6.Pick up the correct statement from the following:
A. The free quartz suddenly expands at a temperature lower than 600°C
B. The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2
C. The sand stone with silicates resist a fire in a better way
D. All the above.

7.The most commonly used base for timber painting, is
A. red lead
B. zinc white
C. white lead
D. titanium white.

8.Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:
A. absence of sun light
B. dampness
C. presence of sap
D. All the above,

9.The rocks formed from molten magma, are called
A. sedimentary rocks
B. igneous rocks
C. metamorphic rocks
D. none of these.

10.Bitumen paints offer
A. pleasing surface
B. hard surface
C. smooth surface
D. protective surface

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