How is PVC recycled commonly?
1.Feedstock process
2.VinyLoop process
3.Mechanical process
4.Chemical process
Flexible PVC is used for:
1.Pipes
2.Partition walls
3.Flooring
4.Door frames
Glass is a mixture of:
1.Non-metallic silicates
2.Metallic silicates
3.Metallic acetates
4.Non-metallic acetates
Hardness of rubber is measured on which scale?
1.Rockwell scale
2.Shore scale
3.Mohr’s scale
4.Vicker’s scale
How many different categories of glass are there?
1.5
2.4
3.2
4.3
Natural rubber contains polymers of an organic compound:
1.Polyprene
2.Neoprene
3.Thiokol
4.Isoprene
Pure PVC is ____________ in colour.
1.Grey
2.Blue
3.White
4.Black
PVC plug is used to:
1.Connect pipes of varying diameter
2.Connect 2 pipe lines
3.Seal pipes of less diameter
4.Seal end of pipe line
Recycled crumb rubber can be used in:
1.Plastering
2.Mortar
3.Paints
4.Concrete
RPVC can be made softer and more flexible using:
1.Reducers
2.Conditioners
3.Oils
4. Plasticizers
Rubber bricks are generally used for:
1.Roofing
2.Walls
3.Floorings
4.Lining pizza ovens
Rubber latex is used for:
1.Bonding wood plys
2.Bonding rubber to walls
3.Bonding rubber to wood
4.Bonding tools
Rubber seed oil can be used in:
1.Paint
2.Medicine
3.Varnish
4.Fuel
Synthetic rubber is also called:
1.Gum rubber
2.Caoutchouc
3.Buna-S
4.Gum elastic
What is added to rubber to make it a thermosetting polymer?
1.Potassium
2.Sulphur
3.Sodium
4.Phosphorous
What is resilience?
1.Strength
2.Elasticity
3. Soundness
4.Durability
What is the Limiting Oxygen Index (LOI) of PVC?
1.45 or more
2.20 or more
3.45 or less
4.20 or less
Which additive in PVC pipe leads to the contamination of potable water?
1.Lead
2.VCM
3.Phthalates
4.Sulphur
Which of the following PVC product is not there in the market?
1.PVC brick decor
2.PVC door
3.PVC cement
4.PVC plaster
Which of the following types of glass accounts for about 90% of manufactured glass?
1.Potash-lime glass
2.Soda-lime glass
3. Potash-lead glass
4.Soda-lead glass