Rajasthan Technical Education Second Year Paper 2016- Building Materials

Rajasthan Technical Education Second Year Paper 2016- Building Materials

Rocks have a distinct plane of division along which stone cna easily be split, is known as
(a) Dressing of stone
(b) Natural bed of stone
(c) Seasoning of stone
(d) Hardness of stone

The specific gravity of a good building stone should not be greater than
(a) 1.0
(b) 1.7
(c) 2.0
(d) 2.7

Quality of stone by which it is capable of withstanding adverse effects of various atmosphere and rain, frost, wind etc., is known as
(a) Seasoning
(b) Weathering
(c) Dressing
(d) Hardening

Deteriration of stone occur due to
(a) Alternate wetness and drying
(b) Rain water
(c) Temperature variation
(d) All of the above

Which one is NOT a natural material ?
(a) Marble
(b) Graphite
(c) Brick
(d) Gypsum

Largest composition of a good brick earth is
(a) Alumina
(b) Silica
(c) Lime
(d) Magnesia

Correct sequence of brick manufacturing is
(a) Moulding, Drying, Burning
(b) Drying, Burning, Moulding
(c) Burning, Drying, Moulding
(d) Moulding, Burning, Drying

Water absorption of a good brick should not more than
(a) 20% of weigth of brick
(b) 30% of weight of brick
(c) 40% of weight of brick
(d) 50% of weigth of brick

When two bricks are struck with each other, it should give a clear ringing sound, test is known as
(a) Hardness
(b) Soundness
(c) Shape and size
(d) Absorption

When water is added to the quick lime, it cracks, swells and fall into powder form is known as
(a) Slacking
(b) Calcination
(c) Setting
(d) None of the above

Ordinary cement has largest ingredient
(a) Lime
(b) Silica
(c) Alumina
(d) Iron oxide

The sequence of operations in the manufacturing of cement are
(a) Mixing of raw materials, Grinding, Burning
(b) Grinding, Burning, Mixing of raw material
(c) Bruning, Grinding, Mixing of raw materials
(d) Mixing of raw material, Burning, Grinding

This test is carried out to check proper grinding of cement
(a) Chemical compositon
(b) Fineness
(c) Compression strength
(d) Tensile strength

Initial setting time for ordinary cement is
(a) 30 minutes
(b) 45 minutes
(c) 60 minutes
(d) 75 minutes

Cement produced by adding a small percentage of Aluminium sulphate and by finely grinding is
(a) White cement
(b) Low heat cement
(c) Coloured cement
(d) Quick setting cement