Wednesday, September 7, 2016
S.B. Roll No. _____________
Duration : 4 Hrs.
1. Fill in the blanks
a. Rocks formed by change in heal and pressure is known as __________
b. The dimensions of a standard brick are _______
c. Staking is the process of breaking the lumps of lime into powder form by adding _______
d. The defect caused due to the growth of gap wood over a would left by a falling branch is called________
e. Ply wood is _______ than an ordinary wood of same thickness.
f. The ingredient which acts as binder for base and pigment in an oil paint is called ______
g. Plasticizers are added for improving the _______ of plastics.
h. Sound insulating materials offer ______ to reflection and transmission of sound
i. Asbestos is a ___________ material.
j. Sheet glass is _______ than plate glass.
Choose the correct one
a. Granite is derived from igneous rocks/sedimentary rocks.
b. Pilla bricks are available at top/ bottom of stack of bricks in a kiln
c. The strength of cement increases / decreases with storage
d. Paint should be applied on seasoned / unseasoned timber.
e. Higher percentage of carbon increases / decreases the strength of the steel.
a. Differentiate between rock and stone
b. What are object slaking of lime
c. Describe the characteristics of good brick earth.
d. Describe the proper way of storing cement.
e. Differentiate between white and coloured cement.
f. What are the causes of decay of timber?
g. Describe the properties of ply wood
h. What is the difference between a paint and a varnish?
i. List out commercial forms of ferrous metals.
j. Give the properties and uses of kota stone.
Note: Attempt any two questions.
3. Make a neat sketch of bull’s trench kiln showing section elevation and plan and explain its working.
a. Prepare the flow diagram showing various stages in the manufacturing of Portland cement by wet process.
b. What do you man by preservation of timber? What are its objects
a. List out the uses aluminium in building works
b. Explain the compressive strength of bricks test in laboratory.
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