MCQOPTIONS
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MCQOPTIONS
This section includes 177 Mcqs, each offering curated multiple-choice questions to sharpen your Building Materials knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
A good refractory brick should withstand high temperature. It should also have low coefficient of expansion and contraction. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 102. |
The natural drying of bricks is also called hack drying. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 103. |
The commonly used lime in white washing is |
| A. | quick lime |
| B. | fat lime |
| C. | lean lime |
| D. | hydraulic lime |
| Answer» C. lean lime | |
| 104. |
Siliceous rocks have alumina or clay as their major constituent. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 105. |
The commonly used lime for works under water or in damp situations is |
| A. | fat lime |
| B. | lean lime |
| C. | feebly hydraulic lime |
| D. | eminently hydraulic lime |
| Answer» E. | |
| 106. |
The main constituent of a Portland cement is |
| A. | lime |
| B. | alumina |
| C. | iron oxide |
| D. | alkalies |
| Answer» B. alumina | |
| 107. |
According to Indian standard specifications, the temperature for curing is |
| A. | 5?C |
| B. | 10?C |
| C. | 27?C |
| D. | 42?C |
| Answer» D. 42?C | |
| 108. |
The compound responsible for the initial setting of cement, is |
| A. | tri-calcium aluminate |
| B. | tetra-calcium alumino ferrite |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» D. none of these | |
| 109. |
The liquid medium used in enamel paints is |
| A. | thinner |
| B. | alcohol |
| C. | turpentine |
| D. | varnish |
| Answer» E. | |
| 110. |
Le-chatelier method is used to determine |
| A. | initial setting of cement |
| B. | fineness of cement |
| C. | soundness of cement |
| D. | normal consistency of cement |
| Answer» D. normal consistency of cement | |
| 111. |
Bituminous paint consists of bitumen dissolved in |
| A. | spirit |
| B. | naptha |
| C. | linseed oil |
| D. | either (a) or (b) |
| Answer» E. | |
| 112. |
The purpose of seasoning of timber is to |
| A. | change the direction of grains |
| B. | remove voids |
| C. | reduce moisture content |
| D. | all of these |
| Answer» D. all of these | |
| 113. |
The bricks should be burnt at temperature from |
| A. | 300?C to 500?C |
| B. | 500?C to 700?C |
| C. | 700?C to 1000?C |
| D. | 1000?C to 1200?C |
| Answer» E. | |
| 114. |
The thickness of lamin boards vary from |
| A. | 5 to 12 mm |
| B. | 12 to 15 mm |
| C. | 12 to 25 mm |
| D. | 25 to 30 mm |
| Answer» D. 25 to 30 mm | |
| 115. |
The dolomite bricks are |
| A. | ordinary bricks |
| B. | acid refractory bricks |
| C. | basic refractory bricks |
| D. | neutral refractory bricks |
| Answer» D. neutral refractory bricks | |
| 116. |
The sand is mixed with lime mortar to |
| A. | reduce cost |
| B. | reduce setting time |
| C. | improve strength |
| D. | prevent shrinkage and cracking |
| Answer» E. | |
| 117. |
The strength of timber is maximum in the direction |
| A. | parallel |
| B. | perpendicular |
| Answer» B. perpendicular | |
| 118. |
The good clay for making bricks is |
| A. | unweathered clay |
| B. | weathered clay |
| C. | silted soil |
| D. | black cotton soil |
| Answer» C. silted soil | |
| 119. |
For R.C.C. construction, the maximum size of coarse aggregate is limited to |
| A. | 10 mm |
| B. | 15 mm |
| C. | 20 mm |
| D. | 25 mm |
| Answer» E. | |
| 120. |
The colour of brick depends upon the amount of iron oxide present in the clay. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 121. |
Gypsum is added in the manufacture of Portland cement |
| A. | while mixing the raw materials |
| B. | during burning in the rotary kiln |
| C. | at the beginning of grinding the clinker |
| D. | at the end of grinding the clinker into powder |
| Answer» E. | |
| 122. |
Igeous rock has |
| A. | crystalline, glossy or fused texture |
| B. | foliated structure which is hard and durable |
| C. | layers of different composition, colour and structure |
| D. | none of the above |
| Answer» B. foliated structure which is hard and durable | |
| 123. |
Rich or fat lime |
| A. | slakes rapidly with considerable evolution of heat |
| B. | takes very long time to develop adequate strength |
| C. | has high plasticity |
| D. | all of these |
| Answer» E. | |
| 124. |
Poor or lean lime |
| A. | slakes rapidly with considerable evolution of heat |
| B. | takes very long time to develop adequate strength |
| C. | has high plasticity |
| D. | none of the above |
| Answer» E. | |
| 125. |
According to Indian standard specifications, the full strength of concrete is achieved after |
| A. | 7 days |
| B. | 14 days |
| C. | 21 days |
| D. | 28 days |
| Answer» E. | |
| 126. |
The liquid medium used in oil paints is |
| A. | thinner |
| B. | alcohol |
| C. | linseed oil |
| D. | turpentine |
| Answer» D. turpentine | |
| 127. |
The principal constituent of every kind of brick earth is alumina. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 128. |
The workability of cement concrete can be improved by |
| A. | increasing the quantity of cement |
| B. | increasing the proportion of coarse aggregate |
| C. | increasing the quantity of sand |
| D. | all of the above |
| Answer» B. increasing the proportion of coarse aggregate | |
| 129. |
The constituent in lime which retard the slaking action and increase the rapidity of setting, is |
| A. | silica |
| B. | sulphate |
| C. | alkalies |
| D. | alumina |
| Answer» B. sulphate | |
| 130. |
The fuel generally used for burning limestone is |
| A. | coal |
| B. | charcoal |
| C. | firewood |
| D. | any one of these |
| Answer» E. | |
| 131. |
The indentation marks left on bricks during the process of moulding, are known as |
| A. | fillets |
| B. | frogs |
| C. | projections |
| D. | marks |
| Answer» C. projections | |
| 132. |
A first class brick should not absorb water more than |
| A. | 10% |
| B. | 15% |
| C. | 20% |
| D. | 25% |
| Answer» D. 25% | |
| 133. |
The metallic oxide used in the form of powder in a paint is called |
| A. | extender |
| B. | base |
| C. | vehicle |
| D. | drier |
| Answer» C. vehicle | |
| 134. |
The bulking of sand |
| A. | increases |
| B. | decreases |
| Answer» B. decreases | |
| 135. |
The rocks formed due to alteration of original structure under heat and excessive pressure are called metamorphic rocks. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 136. |
The moisture content in timber for framework should not exceed |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| Answer» D. 20% | |
| 137. |
The quarrying of stone by the method of wedging is successfully carried out in |
| A. | sandstones |
| B. | limestones |
| C. | marbles |
| D. | all of these |
| Answer» E. | |
| 138. |
The thinner used for oil paints is |
| A. | water |
| B. | turpentine |
| C. | carbon tetrachloride |
| D. | any one of these |
| Answer» C. carbon tetrachloride | |
| 139. |
The silica in Portland cement should be |
| A. | 10 to 20% |
| B. | 20 to 25% |
| C. | 25 to 40% |
| D. | 40 to 60% |
| Answer» C. 25 to 40% | |
| 140. |
The commonly used cement in cement paints is |
| A. | white cement |
| B. | Portland cement |
| C. | alumina cement |
| D. | rapid hardening cement |
| Answer» B. Portland cement | |
| 141. |
The bitumen paints are used for providing |
| A. | rough |
| B. | smooth |
| C. | protective |
| Answer» D. | |
| 142. |
Efflorescence is caused if |
| A. | the alkaline salt is present in the bricks |
| B. | the clay used for making bricks contain pyrite |
| C. | the water used for pugging the clay contains gypsum |
| D. | all of the above |
| Answer» E. | |
| 143. |
In order to dry the quarry sap of a freshly quarried slone, it should be exposed to open air for a period of |
| A. | one month |
| B. | four months |
| C. | six to twelve months |
| D. | two years |
| Answer» D. two years | |
| 144. |
Excess pf alumina in the clay |
| A. | makes the brick brittle and weak |
| B. | makes the brick crack and warp on drying |
| C. | changes colour of the brick from red to yellow |
| D. | improves impermeability and durability of the brick |
| Answer» C. changes colour of the brick from red to yellow | |
| 145. |
The brick earth is derived by the disintegration of |
| A. | igneous |
| B. | metamorphic |
| Answer» B. metamorphic | |
| 146. |
The percentage of silica in a good brick clay should vary from |
| A. | 20 to 30% |
| B. | 30 to 40% |
| C. | 40 to 50% |
| D. | 50 to 60% |
| Answer» E. | |
| 147. |
The strength of white cement is |
| A. | equal to |
| B. | less than |
| C. | greater than |
| Answer» C. greater than | |
| 148. |
The sedimentary rocks are formed due to |
| A. | solidification of molten mass lying below or above the earth surface |
| B. | gradual deposition of materials like sand, clay, etc., generally by setting water |
| C. | alteration of original structure under heat and excessive pressure |
| D. | none of the above |
| Answer» C. alteration of original structure under heat and excessive pressure | |
| 149. |
The slump test of concrete is used to measure its |
| A. | consistency |
| B. | tensile and compressive strength |
| C. | impact value |
| D. | homogeneity |
| Answer» B. tensile and compressive strength | |
| 150. |
Moorum is a decomposed laterite and has deep brown or red colour. |
| A. | Yes |
| B. | No |
| Answer» B. No | |