Pick up the metal refractory from the following:
Molybdenum
Tungsten
Zirconium
All of these
Correct Answer :
D. All of these
Related Questions
To give a brilliant finish, the type of varnish used, is
Water varnish
Spirit varnish
Turpentine varnish
Oil varnish
During pudding
Molten metal is kept clear of the fuel
Carbon is converted into carbonic acid gas
Silicon forms a slag
All the above
Seasoning of timber is essential to remove
Knots from timber
Sap from timber
Twisted fibre from timber
Roughness of timber
Bessemer process is used for the manufacture of
Pig iron
Cast iron
Wrought iron
Steel
Pick up the correct statement from the following:
Styrene resin is produced from ethylene which is made from petroleum
Styrene resin is light in weight
Styrene resin transmits ultraviolet waves of light
All the above
Jumper is a tool used for
Testing of stones
Quarrying of stones
Dressing of stones
None of the above
Which of the following gradients exerts maximum influence on properties of steel?
Iron
Carbon
Manganese
Sulphur
Which of the following sedimentary rocks changes into quartzite by metamorphic action?
Sand stone
Lime stone
Shale
Gypsum
Pick up the correct statement from the following:
The distinct plane of division along which a stone can easily be split, is called natural bed of stone
The natural bed of sedimentary rocks is along the planes of stratification
The natural bed of igneous rocks is not defined
All the above
Good quality cement contains higher percentage of
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
In a rock calcium carbonate predominates. State whether it is:
Siliceous rock
Argillaceous rock
Calcareous rock
None of these
Bulking of sand is caused due to
Surface moisture
Air voids
Viscosity
Clay contents
The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:
Radial shakes
Heart shakes
Wind cracks
Twisted fibres
Bitumen paints offer
Pleasing surface
Hard surface
Smooth surface
Protective surface
PVC stands for
Plastic very compact
Polythene vinyl chloride
Polythene vinyl carbon
Polythene vanadium carbide
French polish is
Oil paint
Distemper
Spirit varnish
None to these
Which of the following represents a metamorphic rock? (i) Slate (ii) Shale (iii) Quartzite The correct answer is
Only (iii)
Both (i) and (iii)
Both (ii) and (iii)
All (i), (ii) and (iii)
Sand stone is
Sedimentary rock
Metamorphic rock
Igneous rock
Volcanic rock
In paints, the pigment is responsible for
Durability
Colour
Smoothness
Glassy face
Ultimate strength to cement is provided by
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
Plywood is made from
Common timber
Bamboo fibre
Teak wood only
Asbestos sheets
The softest rock is
Marble
Diamond
Talc
Quartz
The commonly used colour pigment in paints, is
Ambers
Carbon black
Iron oxide
All the above
Quartzite, a metamorphic stone is
Hard
Brittle
Crystalline
All the above
The plastics made from cellulose resin
Are as clear as glass
Are tough and strong
Possess excellent electrical properties
All the above
The plastics prepared from Vinyl resin are
Odourless
Non-toxic
Transparent
All of these
Pick up the correct statement from the following:
Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon
The edges of a finished wrought iron are rough due to red shortage
Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)
All the above
For the manufacture of Portland cement, the proportions of raw materials used, are
Lime 63% ; silica 22% ; other ingredients 15%
Lime 22% ; silica 63% ; other ingredients 15%
Silica 40% ; lime 40% ; other ingredients 20%
Silica 70% ; lime 20% ; other ingredients 10%
Pick up the correct statement from the following:
Lime is available in Free State
Lime is available by dissolving calcium carbonate in water
Lime is available by calcining calcium carbonate at 900°C
Lime is nothing but calcium chloride
After storage, the strength of cement
Decreases
Increases
Remains same
May increase or decrease