Civil Engineering - Building Materials

6.
Pick up the correct statement from the following:
The free quartz suddenly expands at a temperature lower than 600°C
The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2
The sand stone with silicates resist a fire in a better way
The argillaceous stone though poor in strength can resist fire quite weak
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
The most commonly used base for timber painting, is
red lead
zinc white
white lead
titanium white.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:
absence of sun light
dampness
presence of sap
stagnant air
All the above,
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
The rocks formed from molten magma, are called
sedimentary rocks
igneous rocks
metamorphic rocks
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
Bitumen paints offer
pleasing surface
hard surface
smooth surface
protective surface
rough surface.
Answer: Option
Explanation:
No answer description is available. Let's discuss.