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MCQ
27341. Calculate standard consistency (%) when 100ml if water is added in 1kg of cement-----[BB-20]
10
1000
100
1
ব্যাখ্যা: Standard Consistency (%) = (wt of water added/wt of cement) x 100 =(100/1000)x100=10
27342. Geologically marble is known as- [PPA-19]
Sedimentary rock
Igneous rock
Metamorphic rock
Stratified rock
ব্যাখ্যা: Marble is a metamorphle rock (রূপান্তরিত শিলা) composed of recrystallized carbonate minerals, most commonly calcite or dolomite.
27343. কৃদন্ত পদের পূর্ববর্তী পদকে কী বলে ?
উপপদ
প্রাতিপদিক
প্রপদ
পূর্বপদ
27344. সুনামীর তান্ডবে অনেকেই সর্বশান্ত হয়েছে।’ বাক্যটিতে কয়টি ভুল আছে?
একটি
দুটি
তিনটি
ভুল নেই
27345. What are the two main elements of Portland cement? [BREB-17, HED-19]
Lime & Silica
Lime & Iron
Lime & Alumina
Silica & Copper
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.
27346. Which of the following is an example of argillaceous rock? [MES-18]
kaolin
slate
laterite
all of these
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.
27347. The maximum percentage of chemical ingredient of cement is that of- [PPA-19]
magnesium
iron oxide
aluminium
lime
ব্যাখ্যা: Lime percentage in cement 67%.
27348. Which of the following is an example of silicious rock? [MES-18]
granite
gneiss
quartzite
all of these
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.
27349. Laterite is chemically classified as [MES-18]
calcareous rock
argillaceous rock
silicious rock
metamorphic rock
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.
27350. [MOD-20] What is the unit weight of water?
50 Ib/ft²
62.5 Ib/ft²
90.5 Ib/ft^3
100 lb/ft^3
ব্যাখ্যা: The specific weight, also known as the unit weight, is the weight per unit volume of a material. A commonly used value is the specific weight of water on Earth at 4°C, which is 9.807 kN/m² or 62.5 Ibf/ft².
27351. 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: 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.
27352. তুমি তো ভারি সুন্দর ছবি আঁক!'—বাক্যটিতে কোন প্রকারের অব্যয় পদ ব্যবহৃত হয়েছে?
পদান্বয়ী অব্যয়
অনুসর্গ অব্যয়
অনন্বয়ী অব্যয়
অনুকার অব্যয়
27353. তোমার নাম কী?'—এখানে 'কী' কোন প্রকারের পদ?
প্রশ্নবাচক
অব্যয়
সর্বনাম
বিশেষণ
27354. Gneiss is chemically classified as- [MES-18]
calcareous rock
argillaceous rock
silicious rock
none of these
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.
27355. Marble is an example of- [MES-18]
aqueous rocks
metamorphic rock
sedimentary rocks
igneous rocks
ব্যাখ্যা: Metamorphic rocks are formed by the metamorphism process. Some example of metamorphic rocks are slate, gneiss, schist, marble, soapstone etc.
27356. Rank' শব্দের বাংলা পরিভাষা কী?
পদ
পদমর্যাদা
উচ্চতা
মাত্রা
27357. French polish is- [PPA-20]
Oil paint
Distemper
Spirit varnish
Asphalt
ব্যাখ্যা: Oil paint is a type of slowdrying paint that consists of particles of pigment suspended in a drying oil, commonly linseed oil.
27358. 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: The compressive strength of granite is 750 to 1350 kg/cm² or 70 to 130 MN/m².
27359. The portion of bricks at across the width in half is called- [MOCA-19]
half sprit
half closer
half bed
half bat
ব্যাখ্যা: ইটের প্রন্থের অর্ধেক অংশকে হাফ ব্যাট (Half bat) বলে।
27360. Soundness of cement is tested by- [BB-20]
Vicats appararus
Le-chatelier apparatus
Compressive strength testing apparatus
none of these
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.