Question 1

Red colour of brick is due to the pre ence of

Accepted Answer

A)  lime
B)  silica
C)  manganese
D)  iron oxide D

Question 2

Excess of iron oxide in brick earth makes the bricks

Accepted Answer

A)  stronger
B)  darker
C)  brittle
D)  crack B

Question 3

The indentation mark left on bricks during the process of moulding are

Accepted Answer

A)  pallets
B)  fillets
C)  marks
D)  frog D

Question 4

Gradual drying of moulded bricks is necessary to

Accepted Answer

A)  prevent shrinkage
B)  permit shrinkage without cracking
C)  permit blending of alumina and silica
D)  none of the above

Question 5

Excess of lime in the brick earth makes the bricks

Accepted Answer

A)  brittle and weak
B)  crack and warp
C)  melt and lose shape
D)  improve durability

Question 6

The wood that cannot be attacked by white ants is

Accepted Answer

A)  mahogany
B)  rosewood
C)  sissoo
D)  teak

Question 7

Honeycomb and cracks may occur in timber due to

Accepted Answer

A)  erroneous conversion
B)  erroneous seasoning
C)  attack by fungi
D)  contact with water for a long time

Question 8

The standard size of bricks as per Indian Standards is

Accepted Answer

A)  230 × 120 × 80 mm
B)  200 × 100 × 100 mm
C)  190 × 90 × 90 mm
D)  190 × 100 × 100 mm

Question 9

Stain appears in wood due to

Accepted Answer

A)  poor ventilation during storage
B)  contact with water and chemicals for long time
C)  shock when it was young
D)  crushing during growth

Question 10

An assembled product made up of veneers and adhesives is called

Accepted Answer

A)  batten
B)  plank
C)  board
D)  plywood

Question 11

Plywood is identified by

Accepted Answer

A)  volume
B)  weight
C)  area
D)  thickness

Question 12

Pug mill is used to

Accepted Answer

A)  blend clay
B)  tempering
C)  weathering clay
D)  burning bricks

Question 13

In a plywood the veneers are placed such that the gra ns of a layer are

Accepted Answer

A)  at 45° to the grains of a layer below it
B)  at 60° to the grains of a layer below it
C)  at right angles to the layer below it
D)  at 180° to the grains of a layer below it

Question 14

A thin sheet of wood sliced from log is called

Accepted Answer

A)  plywood
B)  lamin board
C)  veneer
D)  particle board

Question 15

In stiff mud process of machine moulding, water used for mixing is

Accepted Answer

A)  8-12%
B)  12-18%
C)  20-24%
D)  30%

Question 16

Particle boards are manufactured by using

Accepted Answer

A)  chips of wood, rice husk and bagasse
B)  strips of wood of width 25-80 mm
C)  wood pulp
D)  none of the above

Question 17

Which one of the following statements is wrong about clamp burning

Accepted Answer

A)  it is cheap
B)  does not need skilled labour
C)  control on burning process is good
D)  burning process is slow

Question 18

Alumina in brick earth gives the bricks

Accepted Answer

A)  strength
B)  colour
C)  plasticity
D)  resistance to shrinkage

Question 19

The brick is considered dry when the moisture content is

Accepted Answer

A)  8%
B)  5%
C)  2%
D)  zero

Question 20

Pallet board is used to

Accepted Answer

A)  make frog in the brick
B)  to mount the mould
C)  for table moulding of bricks
D)  none of the above

Exam 3: Wood, Brick and Kiln Production