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1 >>In a mortar, the binding material is ?

• (A) cement
• (B) sand
• (C) surkhi
• (D) cinder.

2 >>Lacquer paints ?

• (A) are generally applied on structural steel
• (B) are less durable as compared to enamel paints
• (C) consist of resin and nitro-cellulose
• (D) all the above.

3 >>Wrought iron contains carbon upto ?

• (A) 0.0025
• (B) 0.01
• (C) 0.015
• (D) 2%.

4 >>Pick up the polymineralic rock from the following: ?

• (A) Quartz sand
• (B) Pure gypsum
• (C) Magnesite
• (D) Granite

5 >>Pick up the correct statement from the following: ?

• (A) For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
• (B) For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55 For thin structures which remain continuously under water, the water-cement ratio by weight should be
• (C) should be 0.65
• (D) All the above.

6 >>The rocks in which argil (or clay) predominates, are called ?

• (A) sillicious rocks
• (B) argillaceous rocks
• (C) calcareous rocks
• (D) igneous rocks.

7 >>A badly mixed cement concrete results in ?

• (A) segregation
• (B) bleeding
• (C) honey combing
• (D) none to these.

8 >>Pick up the correct statement regarding low heat cement from the following: ?

• (A) It possesses less compressive strength
• (B) Its initial setting time is about one hour
• (C) Its final setting time is about 10 hours
• (D) All the above.

9 >>Chemically, marble is known as ?

• (A) metamorphic rock
• (B) argillaceous rock
• (C) calcareous rock
• (D) silicious rock

10 >>Inner part of a timber log surrounding the pitch, is called ?

• (A) sapwood
• (B) cambium layer
• (C) heart wood
• (D) none to these