MCQ
921. A first class brick should have a minimum crushing strength of (প্রথম শ্রেণির ইটের নূন্যতম ক্রাশিং, স্ট্রেস্থ–
7MN/m²
10.5MN/m²
12.5MN/m²
14MN/m²
922. নিচের কোনটি সিমেন্টের উপাদান নয় ?
SiO2
MgO
CaO
AIO3
923. Laterite is chemically classified as-
calcareous rock
argillaceous rock
silicious rock
metamorphic rock
924. Seasoning of timber is done for- (কাঠের ঋতুসহকরণ যে কারনে করা হয়-
Increase moisture content
Decrese moisture content
Decrease strength
None of the above.
925. When first class brick is sunk 24 hours in water how much water will absorbed of its weight?
1/3
1/6
1/4
1/7
926. The Final setting time of Ordinary Porland Cement should not be more than-- [সাধারণ পোর্টল্যান্ড সিমেন্টের চূড়ান্ত ঘনীভবনের সময় সর্বোচ্চ]--
5 hours
7.5 hours
10 hours
12.5 hours
927. The compreassive strength of granaite is –
50 to 70 MN/m²
70 to 130 MN/m²
130 to 170 MN/m²
170 to 200 MN/m²
928. Which of the following is an example of argillaceous rock?
kaolin
slate
laterite
all of these
929. Gneiss is chemically classified as-
a rock
argillaceous rock
silicious rock
none of these
930. Which of the following is an example of siliceious rock?
qranite
gneiss
quartzite
all of these
931. Which is final setting time of ordinary Portland cement? সাধারণ পোর্টল্যান্ড সিমেনেটর চূড়ান্ত ঘনীভবন সময় কত?
Note more than 10 hrs
Not more than 6 hrs
Not more than 8 hrs
Not more than 5 hrs
932. স্টিল বিমের সেকশন নিচের ফোন আকৃতির হতে পারে?
F
H
M
O
933. The poisson's ratio for steel varies from-MES-IN—
0.22 to 0.28
0.25 to 0.33
0.31 to 0.34
0.32 to 0.42
934. Which one is not the main consitituent of portland cement? [কোনটি পোর্টল্যান্ড সিমেন্টের প্রধান উপাদান নয়?]
Di-calcium silicate
Tri-calcium silicate
Tetra-calcium aluminorferrite
Fly ash
935. What is the example of metamorphic rock?
granite
geneiss
marble
all of these
936. A good building stone is one which does not absorb more than....... of its weight of water after one day's immersion --
5%
15%
10%
25%
937. Marble is an example of –
aqueous rocks
metamorphic rock
sedimentary rocks
igneous rocks
938. The specific gravity of stone should not, in any case, be less than-
1
1.5
2
2.5
939. which on is the FM of sylet sand (নিচের কোনটি সিলেট বালি FM) ?
2.01
2.87
2.5
2.65
940. Granite is an example of-
aqueous rocks
sedimentary rock
metamorphic rocks
igneous rocks