Q.1
Calcination of iron ores is done
Q.2
The size of mould for bricks, is generally kept
Q.3
Plaster of Paris is obtained by calcining
Q.4
Which of the following is a mineral?
Q.5
Which of the following timbers is suitable for making sports goods?
Q.6
For one cubic metre of brick masonry, number of bricks required, is
Q.7
The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is
Q.8
The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick
Q.9
The foliated structure is very common in
Q.10
The rocks formed by gradual deposition, are called
Q.11
Stones used for the construction of retaining walls must be
Q.12
Invar contains
Q.13
Seasoning of timber is done for
Q.14
The initial setting time of lime-pozzolana, is
Q.15
Jhumb bricks are
Q.16
Q.17
The specific gravity of marble, is
Q.18
A good brick earth should contain:
Q.19
For preparing porcelains, the clay should be
Q.20
Granite is not suitable for ordinary building purpose because
Q.21
The frog of the brick in a brick masonry is generally kept on
Q.22
Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth?
Q.23
Good quality cement contains higher percentage of
Q.24
The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:
Q.25
The most commonly used synthetic abrasive is
Q.26
A bull nose brick is not used for
Q.27
The lime which contains mainly calcium oxide and slacks with water, is
Q.28
Lacquer is
Q.29
Bessemer process is used for the manufacture of
Q.30
For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
Q.31
Bullet proof glass is made of thick glass sheet sandwiched by a layer of
Q.32
Gypsum is a
Q.33
Excess of alumina in brick earth makes the brick
Q.34
The main constituent which imparts hydraulicity to hydraulic lime is
Q.35
Sandstone is a
(i) Sedimentary rock
(ii) Aqueous rock
(iii) Siliceous rock
Q.36
The most important tool in brick laying for lifting and spreading mortar and for forming joints is
Q.37
French polish is
Q.38
If the iron ore contains clay as an impurity, the flux added during calcination, is
Q.39
Which of the following sedimentary rocks changes into quartzite by metamorphic action?
Q.40
Non acid-resistant asbestos is:
Q.41
Bitumen completely dissolves in
Q.42
Brass is an alloy of
Q.43
The most fire resistant paints are:
Q.44
Assertion A : Pure lime takes a long time to develop adequate strength.
Reason R : Pure lime has slow hardening characteristics.
Select your answer according to the coding system given below:
Q.45
Rapid hardening cement contains
Q.46
The amount of water used for one kg of distemper is
Q.47
For the manufacture of Portland cement, the proportions of raw materials used, are
Q.48
Galvanising means covering iron with a thin coat of
Q.49
Assertion A : Normally turpentine oil is recommended as thinner for indoor painting.
Reason R : Turpentine oil is costlier than other thinners.
Select your answer according to the coding system given below:
Q.50
Assertion A : Paints with white lead base are not recommended for painting of iron works.
Reason R : Paints with white lead base do not check rusting of iron.
Select your answer according to the coding system given below:
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