MCQ
4161. The volume of cement in one bag is [MES-16]
ব্যাখ্যা: Density of cement in loose conditions = 1440 kg/m²
Mass of one bag cement = 50 kg
Volume =Mass/ Density = 50/1440
= 0.0347 cum
= 0.0347x35.3147 = 1.225 cft
1.00 cft
1.50 cft
1.25 cft
1.15 cft
4162. How many types of manufacture of fire bricks? [BREB-17]
ব্যাখ্যা: Fire bricks are classified majorly into three types:
1. Acidic fire bricks
2. Basic fire bricks
3. Neutral fire bricks.
3
4
2
5
4163. Which of the following is an example of argillaceous rock? [MES-18]
ব্যাখ্যা: The rocks in which clay content is
predominant are called argillaccous rock
The rocks are soft in nature and with the
presence of water they can be crumbled
easily some of the argillaceous rocks are
shale, slate, kaolin, literate etc.
kaolin
slate
laterite
all of these
4164. তোমার নাম কী?'—এখানে 'কী' কোন প্রকারের পদ?
প্রশ্নবাচক
অব্যয়
সর্বনাম
বিশেষণ
4165. The maximum percentage of chemical ingredient of cement is that of- [PPA-19]
ব্যাখ্যা: Lime percentage in cement 67%.
magnesium
iron oxide
aluminium
lime
4166. Laterite is chemically classified as [MES-18]
ব্যাখ্যা: Laterite is chemically classified as Argillaceous rock (আগ্নেয় শিলা) Laterite is a red coloured clayey material wich forms a topsoil in tropical regions. It is hard when it is dry.
calcareous rock
argillaceous rock
silicious rock
metamorphic rock
4167. Generally used fine aggregate in our country-
ব্যাখ্যা: Fine aggregate generally consist of natural sand or crushed stone with most particles
passing through a 3/8 inch sieve. But generally use fine aggregate in our country sand.
clay
sand
stone
silt
4168. The chief ingredient of paint is [BGFCL-17]
ব্যাখ্যা: A powdered substance that is mixed with a
liquid in which it is relatively insoluble and
used especially to important color to coating
materials (such as paints) paint is depend on
pigment because pigment fixed different color.
So the chief ingredient of paintsis pigments.
alcohol
drier
oil
pigment
4169. What is the unit weight of cement? [MES-16]
ব্যাখ্যা: Considering dry loose bulk density of following concrete ingredients as-
Cement1440 kg/cum
Fine Aggregate= 1600 kg/cum
Coarse Aggregate = 1450 kg/cum
Water 1000 kg/cum
1440 kg/Cum
1620 kg/Cum
1200 kg/Cum
1500 kg/Cum
4170. Which of the following is an example of silicious rock? [MES-18]
ব্যাখ্যা: The rocks which contain silica in predominant amount are called as siliceous rocks. Presence of a large amount of free sillca makes them harden and durable. Granite, greiss, quartzite, chert. etc. are example of siliceous rocks.
granite
gneiss
quartzite
all of these
4171. The weight of cement in one bag is- [MES-18]
ব্যাখ্যা: Weight of 1 bag cement = 50 kg = 0.0347 m^3 = 1.25 fr^3.
45 kg
50 kg
60 kg
65 kg
4172. A good building stone is one which does not absorb more than....of its weight of water after one day's immersion- [BREB-15, MES-18]
ব্যাখ্যা: A good building stone shouldn't absorb more than 5%
water but stone absorbing more than 10% should be rejected.
5%
10%
15%
25%
4173. The portion of bricks at across the width in half is called- [MOCA-19]
ব্যাখ্যা: ইটের প্রন্থের অর্ধেক অংশকে হাফ ব্যাট (Half bat) বলে।
half sprit
half closer
half bed
half bat
4174. The base material for distemper is [MES-18]
ব্যাখ্যা: Distempers are the cheaper variety of paints in which chalk is used as base and water is used as a carrier. So the base material for distemper is chalk.
chalk
lime
clay
lime putty
4175. Marble is an example of- [MES-18]
ব্যাখ্যা: Metamorphic rocks are formed by the metamorphism process. Some example of metamorphic rocks are slate, gneiss, schist, marble, soapstone etc.
aqueous rocks
metamorphic rock
sedimentary rocks
igneous rocks
4176. Generally....... is used in varnish. [BREB-17]
ব্যাখ্যা: Varnish is primarily used in wood finishing. The elements of varnish are resins, driers, solvent. Solvent means tung oil, phenolic, polyurethane or alkyd and solvents like naphtha, mineral spiritor thimer.
spirit
water
transformer oil
none of these
4177. The specific gravity of stone should not, in any case, be less than- [MES-18]
ব্যাখ্যা: The specific gravity of stone should be greater than 2.7 or so. But the specific gravity of stone should not less than 2.5
1
1.5
2
2.5
4178. Gneiss is chemically classified as- [MES-18]
ব্যাখ্যা: Gneiss is a common and widely distributed type of metamorphic rock or silicious rock. Gneiss is a foliated siliceous rock in which the coarse mineral grains have been arranged into a banded structure.
calcareous rock
argillaceous rock
silicious rock
none of these
4179. In general FM of Sylhet sand is- [BGFCL-17]
ব্যাখ্যা: FM of sylhei sand value 2.3-2.90. But the standard value 2.50.
1.8
2.5
1.5
2.8
4180. The compressive strength of granite is-(MES-18]
ব্যাখ্যা: The compressive strength of granite is 750 to 1350 kg/cm² or 70 to 130 MN/m².
50 to 70 MN/m²
70 to 130 MN/m²
130/to 170 MN/m²
170 to 200 MN/m²