Question 1

Terracotta means

Accepted Answer

A)  insulated
B)  fit for sanitary services
C)  good for ornamental work
D)  baked earth D

Question 2

To make terracotta porous, the following is mixed with clay before burning.

Accepted Answer

A)  lime
B)  silica
C)  sawdust
D)  none of the above C

Question 3

In case of round tiles, under-tiles are used with their narrow ends

Accepted Answer

A)  towards eve
B)  towards ridge
C)  towards valley
D)  in any one fashion A

Question 4

For making stabilized soil brick the soil is stabilized with

Accepted Answer

A)  sand
B)  coal
C)  cement
D)  salt

Question 5

Ribs are made on steel wires to increase

Accepted Answer

A)  strength is compression
B)  strength is tension
C)  bond strength
D)  fatigue quality

Question 6

By calcining and smelting iron ores, a crude and impure form of iron obtained is known as

Accepted Answer

A)  cast iron
B)  wrought iron
C)  steel
D)  pig iron

Question 7

Which of the following statement is wrong?

Accepted Answer

A)  Pan tiles are similar to half round tiles but less curved
B)  Pan tiles are weaker than half round tiles
C)  Allahabad tiles are interlocking tiles
D)  Mangalore tiles are also interlocking tiles

Question 8

Compressive strength of paving bricks should not be less than

Accepted Answer

A)  40 N/mm2
B)  30 N/mm2
C)  20 N/mm2
D)  40 N/mm2.

Question 9

The colour of cast iron is

Accepted Answer

A)  grey
B)  white
C)  both grey and white
D)  none of the above

Question 10

Water absorption of vitrified tiles is not more than

Accepted Answer

A)  0.5%
B)  1.0%
C)  2.0%
D)  5.0%

Question 11

Field test for strength of good bricks is to drop it from a height of ______ and they should not break

Accepted Answer

A)  1.2 m
B)  1.0 m
C)  0.7 m
D)  0.75 m

Question 12

The bricks which may be used to build wall but to be provided with plaster are

Accepted Answer

A)  Ist Class
B)  IInd Class
C)  IIIrd Class
D)  IVth Class

Question 13

The ore from which aluminium is extracted economically is

Accepted Answer

A)  kaolin
B)  kryolite
C)  corundum
D)  bauxite

Question 14

The minimum strength of brick required for building wall is

Accepted Answer

A)  7.5 N/mm2
B)  5.0 N/mm2
C)  3.5 N/mm2
D)  2.5 N/mm2

Question 15

For making spiral staircases, ideal material is

Accepted Answer

A)  pig iron
B)  cast iron
C)  wrought iron
D)  steel

Question 16

The compressive and tensile strength of cast iron are

Accepted Answer

A)  700 N/m2 and 150 N/mm2
B)  600 N/mm2 and 400 N/mm2
C)  415 N/mm2 and 415 N/mm2
D)  400 N/mm2 and 600 N/mm2

Question 17

Maximum water absorption permitted on class AA type Mangalore tiles is

Accepted Answer

A)  13%
B)  15%
C)  17%
D)  19%

Question 18

Non-ferrous Materials

Accepted Answer

A)  Market form of copper is/are
B)  ingots
C)  sheets
D)  tubes

Question 19

Thickness of web of hollow bricks should not be less than

Accepted Answer

A)  20 mm
B)  16 mm
C)  12 mm
D)  8 mm

Question 20

Purest form of iron is

Accepted Answer