Brick

Cheif ingredient of brick

• Alumina

• Silica

• Both

• None

Which ingredient imparts yellowish tint in brick

• Lime

• Iron oxide

• Magnesia

• Oxide of iron

Size of thread used in puggmill

• 3mm

• 3cm

• 30mm

• 30cm

Frogs are provided on

• Bottom of brick

• Top and bottom of brick

• Top of brick

• Sides of brick

Burning temperature of brick

• 350-1730 °c

• 350-2100

• 350-1100

• None

Percentage of silt in good brick earth

• 20

• 25

• 30

• 35

Brick should not break when fall from

• 100cm

• 150cm

• 100mm

• 1.2m

Number of compartments of Hoffmann's kiln

• 6

• 10

• 8

• 12