For a 50 kg cement bag water required, is
16.5 litres
18.5 litres
20.5 litres
22.5 litres
Correct Answer :
D. 22.5 litres
Related Questions
The commonly used thinner in oil paints, is
Naphtha
Turpentine
Both (a) and (b)
None the these
Percentage of silica in a good brick earth lies between
5 to 10 %
20 to 30 %
50 to 60 %
70 to 80 %
Strength of cement concrete primarily depends upon
Quality of water
Quantity of aggregate
Quantity of cement
Water-cement ratio
Pick up the correct statement from the following:
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
The percentage of alumina and silica in good fire clay vary respectively is
25, 75
30, 70
35, 65
All of these
Ground glass
Is made by grinding its one side
Is made by melting powdered glass paints surface
Is used for getting light without transparency
All the above
Which one of the following is an air binding material?
Gypsum
Acid-resistant cement
Quick lime
All of these
Good quality sand is never obtained from
River
Lake
Sea
Gravel powder
The plywood
Has good strength along the panel only
Can be spilt in the plane of the panel
Has greater impact resistance to blows than ordinary wood
Cannot be bent more easily than ordinary wood of same thickness
Study the following statements. (i) Hydraulic lime is suitable for white washing, (ii) Fat lime is suitable for whitewashing, (iii) Hydraulic lime is suitable for making mortar, (iv) Fat lime is suitable for making mortar. The correct answer is
(i) and (iv)
(ii) and (iii)
(i) and (ii)
(iii) and (iv)
Plaster of Paris is obtained by calcining
Bauxite
Gypsum
Lime stone
None of these
Pick up the correct statement from the following:
For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
For thin structures which remain continuously under water, the watercement ratio by weight should be 0.55
All the above
The commonly used lime in white washing, is
White lime
Fat lime
Hydraulic lime
Quick lime
Pick up the correct statement from the following:
The plywoods do not split or crack due to changes in atmosphere
The commercial plywoods are available upto 150 cm wide and upto 300 cm long
The plywoods possess uniform tensile strength in all directions
All the above
For high grade instruments the steel preferred to, is
Cast steel
Bessemer steel
Mild steel
Whitworth compressed steel
The internal size of mould used in brick preparation is
Equal to the size of a fully burnt brick
Smaller than the size of a fully burnt brick
Greater than the size of a fully burnt brick
None of the above
Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as
Bessemer pig
Grey or foundry pig
White or forge pig
Mottled pig
During smelting process, the combination of fuel in the furnace
Forms carbon dioxide
Carbon dioxide with carbon forms carbon mono-oxide
Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
All the above
Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. Select your answer according to the coding system given below:
Both A and R is true and, R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false
A is false but R is true
Varnish is a transparent or semi-transparent solution of resinous substances in
Alcohol
Linseed
Turpentine
All the above
Refractory bricks resist
High temperature
Chemical action
Dampness
All the above
Acrylic is the name of
Cellulose resin
Alkyd resin
Methyl methacrylate
Cumarone-indene
Initial setting of cement is caused due to
Tri-calcium silicate
Di-calcium silicate
Tri-calcium aluminate
Tetra calcium alumino ferrite
Which of the following timbers is suitable for making sports goods?
Mulberry
Mahogany
Sal
Deodar
Commonly used thinner in
Lacquer paints, is alcohol
Cellulose paints is ethyl acetate
Oil paints, is naphtha
All the above
Durability of building stone is affected by its
Chemical composition
Texture
Resistance to atmosphere
All the above
Which of the following is a mineral?
Basalt
Granite
Quartz
Syenite
The process of mixing clay, water and other ingredients to make brick is known as
Kneading
Moulding
Pugging
Drying
A good building stone should not absorb water more than
5 %
10 %
15 %
20 %
The portion of the brick without a triangular corner equal to half the width and half the length, is called
Closer
Queen closer
King closer
Squint brick