1 mm thick
2 mm thick
2 to 3 mm thick
3 mm to 4 mm thick
D. 3 mm to 4 mm thick
0°
30°
45°
90°
Water varnish
Spirit varnish
Turpentine varnish
Oil varnish
190 mm × 90 mm × 80 mm
190 mm × 190 mm × 90 mm
200 mm × 100 mm × 100 mm
200 mm × 200 mm × 100 mm
Bessemer steel
Mild steel
Cast steel
Stainless steel
Naphtha
Turpentine
Both (a) and (b)
None the these
30 minutes
1 hour
6 hours
10 hours
Quartz
Mica
Gypsum
None of the above
Carving out designs on timber planks
Chemically treating timber planks
Thick layer of superior wood glued to inferior wood
Thin layer of superior wood glued to inferior wood
Rusting is caused due to combined action of air, moisture and carbon dioxide
During rusting, first ferrous bicarbonates are formed
On further oxidation ferrous bicarbonates get converted to ferric bicarbonates
All the above
Soft
Hard
Light
Heavy
2.2 kg
1.5 kg
3.2 kg
None of these
Grey cast iron
White cast iron
Mottled cast iron
Toughed cast iron
Cellulose acetate plastics
Polyvinyl chloride plastics
Phenol formaldehyde plastic
Urea formaldehyde plastic
Testing of stones
Quarrying of stones
Dressing of stones
None of the above
15% of cobalt
20% of cobalt
35% of cobalt
45% of cobalt
Increases
Decreases
First increases to a certain maximum value and then decreases
First decreases to a certain minimum value and then increases
Augite
Biotite
Hornblende
All of these
Wane
Torn grain
Diagonal grain
Chipmark
Increasing moisture content
Decreasing moisture content
Increasing strength of timber
None to these
160 N/mm²
260 N/mm²
420 N/mm²
520 N/mm²
Are non-magnetic
Possess high electrical resistance
Possess low coefficient of expansion
All the above
Less than 1
Equal to 1
Greater than 1
Less than 1 in beams but greater than 1 in channels
400
425
450
500
Acid test is done to find out the weathering quality of stones
Attrition test is done to find out the rate of wear of stones which are used in road construction
Crushing test is done to find out the compressive strength of the stone
All the above
Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
Cracked paints may be cured by removing paint and giving a fresh coat of paint
Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
All the above
Igneous rocks
Metamorphic rocks
Sedimentary rocks
Sedimentary metamorphic rocks
12% of nickel
24% of nickel
30% to nickel
36% of nickel
Synthetic resin and spirit
Oil, wax and resin
Resin, oil and turpentine
Spirit, oil and wax
10 m
20 m
30 m
40 m
Iron
Carbon
Manganese
Sulphur