MCQ
26301.
কৃদন্ত পদের পূর্ববর্তী পদকে কী বলে ?
উপপদ
প্রাতিপদিক
প্রপদ
পূর্বপদ
26302.
Soundness of cement is tested by- [BB-20]
Vicats appararus
Le-chatelier apparatus
Compressive strength testing apparatus
none of these
ব্যাখ্যা: ব্যাখ্যা: Soundness of cement may be determined by two methods, namely le-chatelier method and autoclave method,
Soundness of cement is tested by le-chatelier apparatus.
26303.
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]
5%
10%
15%
25%
ব্যাখ্যা: ব্যাখ্যা: A good building stone shouldn't absorb more than 5%
water but stone absorbing more than 10% should be rejected.
26304.
The weight of cement in one bag is- [MES-18]
45 kg
50 kg
60 kg
65 kg
ব্যাখ্যা: ব্যাখ্যা: Weight of 1 bag cement = 50 kg = 0.0347 m^3 = 1.25 fr^3.
26305.
Geologically marble is known as- [PPA-19]
Sedimentary rock
Igneous rock
Metamorphic rock
Stratified rock
ব্যাখ্যা: ব্যাখ্যা: Marble is a metamorphle rock (রূপান্তরিত শিলা) composed of recrystallized carbonate minerals, most commonly calcite or dolomite.
26306.
Which of the following cements is suitable for use in massive concrete structures such as large dams? [BB-20]
Ordinary Portland cement
Low heat cement
Rapid hardening cement
Sulphate resisting cement
ব্যাখ্যা: ব্যাখ্যা: Low heat cement is one of the hydraulic binding materials and would always be perferred for massive structures such as dams. It has excellent performance such as high final strength, long lasting properties.
26307.
Gneiss is chemically classified as- [MES-18]
calcareous rock
argillaceous rock
silicious rock
none of these
ব্যাখ্যা: 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.
26308.
Generally....... is used in varnish. [BREB-17]
spirit
water
transformer oil
none of these
ব্যাখ্যা: 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.
26309.
The portion of bricks at across the width in half is called- [MOCA-19]
half sprit
half closer
half bed
half bat
ব্যাখ্যা: ব্যাখ্যা: ইটের প্রন্থের অর্ধেক অংশকে হাফ ব্যাট (Half bat) বলে।
26310.
The compressive strength of granite is-(MES-18]
50 to 70 MN/m²
70 to 130 MN/m²
130/to 170 MN/m²
170 to 200 MN/m²
ব্যাখ্যা: ব্যাখ্যা: The compressive strength of granite is 750 to 1350 kg/cm² or 70 to 130 MN/m².
26311.
Which of the following is an example of silicious rock? [MES-18]
granite
gneiss
quartzite
all of these
ব্যাখ্যা: 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.
26312.
The maximum percentage of chemical ingredient of cement is that of- [PPA-19]
magnesium
iron oxide
aluminium
lime
ব্যাখ্যা: ব্যাখ্যা: Lime percentage in cement 67%.
26313.
Laterite is chemically classified as [MES-18]
calcareous rock
argillaceous rock
silicious rock
metamorphic rock
ব্যাখ্যা: 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.
26314.
Marble is an example of- [MES-18]
aqueous rocks
metamorphic rock
sedimentary rocks
igneous rocks
ব্যাখ্যা: ব্যাখ্যা: Metamorphic rocks are formed by the metamorphism process. Some example of metamorphic rocks are slate, gneiss, schist, marble, soapstone etc.
26315.
Generally used fine aggregate in our country-
clay
sand
stone
silt
ব্যাখ্যা: 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.
26316.
The base material for distemper is [MES-18]
chalk
lime
clay
lime putty
ব্যাখ্যা: 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.
26317.
What are the two main elements of Portland cement? [BREB-17, HED-19]
Lime & Silica
Lime & Iron
Lime & Alumina
Silica & Copper
ব্যাখ্যা: ব্যাখ্যা: The elements of portland cement are lime or calcium oxide, silica, alumina, iron oxide, Magnesium oxide. But the main elements of portland cement are lime and silica.
26318.
The chief ingredient of paint is [BGFCL-17]
alcohol
drier
oil
pigment
ব্যাখ্যা: 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.
26319.
The specific gravity of stone should not, in any case, be less than- [MES-18]
1
1.5
2
2.5
ব্যাখ্যা: 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
26320.
Which of the following is an example of argillaceous rock? [MES-18]
kaolin
slate
laterite
all of these
ব্যাখ্যা: 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.