Wednesday, September 7, 2016
S.B. Roll No. _____________
Duration : 4 Hrs.
1. Fill in the blanks
a. Granite is much _______ then lime stone.
b. Silica prevents __________ in the brick earth.
c. Gypsum is added to control the ___________ of water
d. Annual rings represent __________ of the tree.
e. Copper is ________ conductor of heat.
State true or false:
a. Turpentine oil is a thinner in an oil paint.
b. Glass is a hard material.
c. Plastics have high specific gravity
d. Lime is obtained from calcium oxide.
e. Roofing tiles are thicker than flooring tiles.
Choose the correct one:
a. State is a sedimentary/ metamorphic rock.
b. Thermal conductivity of glass is low / high.
c. Lead/ copper can be cut with a knife.
d. Mango is an endogenous / exogenous tree.
e. The strength of cement increases / decreases with storage.
Note: attempt any five questions
a. Differentiate between stone and a rock.
b. Give the characteristic of a good brick.
c. How storing of cement is done?
d. Explain uses of plywood.
e. Explain the difference between paint and varnish.
f. Give the requirements of a good sound insulating material.
Note : Attempt any three questions.
a. Give the properties of floor tiles and roof tiles.
b. Explain setting and calcinations of lime.
4. Explain with a neat sketch the working of a bull’s trench kiln for manufacturing bricks.
a. Explain setting and hardening of cement.
b. Explain the difference between bitumen and asphalt.
a. Explain with a neat sketch natural seasoning of timber.
b. Give the properties and uses of mild steel.
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