WorksheetsDay 34-Oct 23-worksheet-Btech-Non ferrous metals&Clay products
Total questions: 15
Worksheet time: 8mins
The red colour of terracotta tiles is mainly due to the presence of
Silica
Iron oxide
Alumina
Feldspar
Initial burning in faience manufacture is called
Firing
Drying
Biscuiting
Sintering
Aluminium bronze is mainly used as a substitute for
Porcelain
Brass
Lead glaze
Stoneware
Cobalt is mainly used in
Glass colouring
Paving bricks
Moulding
Refractory lining
Thickness of glazing on tiles usually lies in the range
0.001–0.01 mm
0.10–0.20 mm
1–2 mm
3–5 mm
The alloy used for springs and gears is
Monel metal
Phosphor bronze
White brass
Pewter
Salt glazing is produced by adding sodium chloride vapour during burning.
True
False
Zinc is a ferrous metal.
True
False
The non-porous, white, hard and semi-transparent ceramic ware is (a) .
The hydrated oxide ore of aluminium is (a) .
A mixture of copper and zinc is called (a) .
Soft and porous ceramic with low chemical resistance is (a) .
1–3%………is added to brass to improve machining properties.
(a)
Which of the following are non-ferrous metals?
Aluminium
Cast iron
Lead
None
Which of the following is/are correctly matched?
Naval brass → 80% Cu & 20% Zn
Stoneware → Soft & porous
Earthenware → Furnace lining
None
