B-Tech1

Question 1

is the ratio of mass to the volume of the
material in its natural state that is including voids and
pores.

Answer 1

Bulk density

Question 2

gives the volume of the material occupied by
pores. It is the ratio of volume of pores to the volume of
material.

Answer 2

Porosity

Question 3

The property of a material to withstand against the
combined action of atmospheric and other factors is
known as durability of material.

Answer 3

Durability

Question 4

is the ratio of mass of the material to its volume in
homogeneous state.

Answer 4

Density

Question 5

Ratio of bulk density of material to its density is termed as

Answer 5

Density index

Question 6

is the ratio of mass of given substance to
the mass of water at 4oC for the equal volumes.

Answer 6

Specific Gravity

Question 7

The ability to withstand against fire without changing its
shape and other properties.

Answer 7

Fire resistance

Question 8

The ability of a material to resist freezing or thawing is
called

Answer 8

Frost resistance

Question 9

The property of a material to withstand against all
atmospheric actions without losing its strength and shape.

Answer 9

Weathering resistance

Question 10

The ability of a material to undergo certain number of
cycles of sharp temperature variations without failing is
known as spalling resistance.

Answer 10

Spalling resistance

Question 11

The capacity of a material to absorb and retain water in it
is known as

Answer 11

Water absorption

Question 12

The ability of a material to permit water through it is called

Answer 12

Water permeability

Question 13

is the property of a material to absorb
water vapor from the air.

Answer 13

Hygroscopicity

Question 14

of a material is the ration of
compressive strength of a saturated material to its
compressive strength in dry state.

Answer 14

Coefficient of softening

Question 15

The property of a material which cannot melts or lose its
shape at prolonged high temperatures (1580oC or more).

Answer 15

Refractoriness

Question 16

The capacity of a material to resist failure caused by loads
acting on it is called

Answer 16

Strength

Question 17

The property of a materials to resist scratching by a herder
body. MOHS scale is used to determine the hardness of a
materials.

Answer 17

Hardness

Question 18

The capacity of a material to regain its initial shape and
size after removal of load is known as

Answer 18

Elasticity

Question 19

When the load is applied on the material, if it will undergo
permanent deformation without cracking and retain this
shape after the removal of load then it is said to be plastic
material and this property is called

Answer 19

Plasticity

Question 20

When the material is subjected to load, if it fails suddenly
without causing any deformation then it is called brittle
material and this property is called as

Answer 20

Brittleness

Question 21

If a material is subjected to repeated loads, then the
failure occurs at some point which is lower than the failure
point caused by steady loads.

Answer 21

Fatigue

Question 22

If a material is subjected to sudden loads and it will
undergo some deformation without causing rupture is
known as

Answer 22

Impact strength

Question 23

The loss of material due to rubbing of particles while
working is called

Answer 23

Abrasion resistance

Question 24

the deformation caused by constant loads for long
periods. It is time dependent and occurs at very slow rate.

Answer 24

Creep

Question 25

The ability of a construction materials to resist the effects by chemicals like acids, salts and alkalis is known as chemical resistance.

Answer 25

Chemical resistance

Question 26

Formation of rust (iron oxide) in metals, when they are subjected to atmosphere is called as

Answer 26

Corrosion resistance

Question 27

The properties of a material to conduct or to resist electricity through them are electrical properties of material.

Answer 27

Electrical properties

Question 28

properties of materials like permeability, hysteresis etc. are required in the case of generators etc. iron is magnetic material and aluminum is non-magnetic material.

Answer 28

Magnetic Properties

Question 29

is the property of a material to absorb heat and it is required to design proper ventilation.

Answer 29

Thermal capacity

Question 30

The amount of heat transferred through unit area of specimen with unit thickness in unit time is termed as

Answer 30

Thermal conductivity

Question 31

It is the ability to resist heat conduction. And it is the reciprocal of thermal conductivity.

Answer 31

Thermal resistivity

Question 32

is the quantity of heat required to heat 1 N of material by 1oC.

Answer 32

Specific heat

Question 33

any material used for construction purpose such as materials for house building.

Answer 33

Building Material

Question 34

Construction materials can be generally categorized into two sources, natural and synthetic.________ materials are those that are unprocessed or minimally processed by industry, such as lumber or glass.

Answer 34

Natural

Question 35

These materials are made in industrial settings after much human manipulations, such as plastics and petroleum based paints.

Answer 35

Synthetic

Question 36

The tent used to be the home of choice among nomadic groups the world over. Two well-known types include the conical teepee and the circular yurt.

Answer 36

Fabric

Question 37

The amount of each material used leads to different styles of buildings. The deciding factor is usually connected with the quality of the soil being used.

Answer 37

Mud and clay

Question 38

___________structures have existed for as long as history can recall. It is the longest lasting building material available, and is usually readily available.

Answer 38

Rock

Question 39

Thatch is one of the oldest of materials known; grass is a good insulator and easily harvested.

Answer 39

Thatch

Question 40

________ structures are built entirely from plant parts and are generally found in tropical and subtropical areas, such as rainforests, where very large leaves can be used in the building.

Answer 40

Brush

Question 41

was used by the Inuit for igloos, but has also been used for ice hotels as a tourist attraction in northern areas that might not otherwise see many winter tourists.

Answer 41

Ice