A. Solder material is an alloy which melts at a temperature above 400°C

B. Brazing is done at temperature above 600°C to 1100°C

C. Brazing joint is stronger than the solder joint

D. All the above

A. 18 cm × 8 cm × 8 cm

B. 19 cm × 9 cm × 9 cm

C. 20 cm × 10 cm × 10 cm

D. 21 cm × 11 cm × 11 cm

A. Manganese

B. Chromium

C. Nickel

D. Vanadium

A. Made with finely powdered chalk and linseed oil

B. Used for fixing glass panes

C. Softened by a solution of pearl ash and quick-lime soaked in water

D. All the above

A. 18% of chromium and 8% nickel

B. 8% of chromium and 18% of nickel

C. 12% of chromium and 36% of nickel

D. 36% of chromium and 12% of nickel

A. Silica bricks

B. Coke oven

C. Lining for glass furnaces

D. All of these

A. 5% to 15%

B. 10% to 25%

C. 15% to 25%

D. 20% to 30%

A. Gypsum

B. Calcium chloride

C. Calcium carbonate

D. None of the above

A. Sedimentary rock

B. Metamorphic rock

C. Extrusive igneous rock

D. Intrusive igneous rock

A. One part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil

B. 8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil

C. One part of white lead, 8 parts of chalk and one part of linseed oil

D. None to these

A. The percentage of absorption for firebricks varies from 5 to 10

B. The percentage of silica in silica bricks is to the extent of about 95 to 97 percent

C. Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material

D. All the above

A. Oil paint

B. Distemper

C. Spirit varnish

D. None to these

A. Sedimentary rocks

B. Igneous rocks

C. Metamorphic rocks

D. None of these

A. Carbon

B. Silicon

C. Phosphorus and manganese

D. All the above

A. Soft stones are required for carving

B. Light stones are required for arches

C. Hard stones are required to stand high pressure

D. All the above

A. Lime (CaO) 45%

B. Silica (SiO₂) 35%

C. Alumina (Al₂O₃) 12% and MgO, CaSO₄, KMnO₂ and FeO 8%

D. All the above

A. Deodar

B. Chir

C. Shishum

D. Pine

A. Neutral refractory bricks

B. Acid refractory bricks

C. Basic refractory bricks

D. All the above

A. To remove moisture

B. To remove carbonic acid

C. By roasting in heaps

D. All the above

A. Its colour is not greenish grey

B. One feels cool by thrusting one's hand in the cement bag

C. A handful of cement thrown into a bucket of water does not float

D. None of these

A. Slaked lime contains calcium hydroxide

B. Quick lime contains calcium oxide

C. Slaked lime may be obtained from quick lime

D. All the above

A. Calcium carbonate

B. Calcium oxide

C. Calcium hydroxide

D. None of the above

A. Rust is due to formation of oxides

B. Cast iron oxidises less

C. Steel oxidises most

D. All the above

A. Decomposed laterite

B. Crushed granite

C. Water bound pebbles

D. Air weathered rock

A. Thinner

B. Vehicle

C. Pigment

D. All the above

A. Defects caused by crushing fibres

B. Splits radiating from the centre

C. Speckled strains

D. Signs of branches cut off

A. A little large to specified size

B. A little small to specified size

C. Equal to specified size

D. 10% larger than specified size

A. Dressing

B. Calcination and roasting

C. Smelting

D. All the above

A. 30 minutes

B. 60 minutes

C. 90 minutes

D. 120 minutes

A. Styrene resin is produced from ethylene which is made from petroleum

B. Styrene resin is light in weight

C. Styrene resin transmits ultraviolet waves of light

D. All the above

A. 50 MPa

B. 100 MPa

C. 150 MPa

D. 200 MPa