Thermoplastic Polymers MCQs
At a pressure of which of the following, LDPE is prepared by polymerising ethylene?
(A). Â 100-200 atmospheres
(B). Â 1000-5000 atmospheres
(C). Â 10-100 atmospheres
(D). Â 2-10 atmospheres
(E). None of these
Multiple Choice Question Answer: Â b
Which of the following is incorrect?
(A). Â inert and has excellent chemical resistance, LDPE is chemically
(B ). Â LDPE is flexible and tough
(C). Â for making films in general packaging, carrier bags etc LDPE is used
(D). Â for load-bearing applications LDPE has high rigidity and is suitable
(E). None of these
Multiple Choice Question Answer: Â d
For the manufacture of pipes for the distribution of gas, LDPE is suitable.
(A ). Â True
(B). Â False
(E). None of these
Multiple Choice Question Answer: Â b
In the presence of which of the following the ethylene is polymerised under?
(A). Â Zeigler Natta catalyst
(B). Â Supported metal oxide catalyst
(C). Â Lewis acids catalyst
(D). Â Friedel crafts catalyst
(E). None of these
Multiple Choice Question Answer: Â a
Which of the following is the softening temperature of HDPE?
(A). Â 1350C
(B). Â 200C
(C). Â 850C
(D). Â 1500C
(E). None of these
Multiple Choice Question Answer: Â a
To make which of the following plasticized PVC is not used?
(A). Â Baby-pants
(B). Â Bathroom curtaining
(C). Â Pipes for drainage
(D). Â Garden hose
(E). None of these
Multiple Choice Question Answer: Â c
________ is also known as Lucite.
(A). Â Polystyrene
(B). Â Polyvinyl acetate
(C). Â Perspex
(D). Â Teflon
(E). None of these
Multiple Choice Question Answer: Â c
Which of the following is the crystallinity of LDPE?
(A). 55%
(B). 10%
(C). Â 30%
(D). Â 80-90%
(E). None of these
Multiple Choice Question Answer:Â a
By which of the following polymerisation of styrene, Polystyrene is prepared?
(A). Â Condensation
(B). Â Free radical
(C). Â Anionic
(D). Â Cationic
(E). None of these
Multiple Choice Question Answer: Â b
. polystyrene is hard but brittle due to the chain stiffening effect of a benzene ring.
(A). Â True
(B). Â False
(E). None of these
Multiple Choice Question Answer:Â a
Which of the following is incorrect?
(A). Â PVC is odourless, colourless and non-inflammable
(B). Â for making bottles for consumable liquids PVC is used
(C ). Â in ethyl chloride PVC has superior chemical resistance but is soluble
(D). Â PVC has poor resistance to weathering and oil resistance
(E). None of these
Multiple Choice Question Answer: Â d
Which of the following is incorrect?
(A). Â HDPE has good electrical insulation properties
(B). Â from odour and toxicity, HDPE is free
(C). Â for domestic water and gas piping HDPE can be used
(D). Â compared to LDPE HDPE possess a lower tensile strength
(E). None of these
Multiple Choice Question Answer:Â d
which of the following is the softening temperature of polystyrene?
(A). Â 80-100 0C
(B). Â 10-20 0C
(C). Â 30-50 0C
(D). Â 120-150 0C
(E). None of these
Multiple Choice Question Answer: Â a
________ is an application of polystyrene?
(A ). Â for solar collectors Dome-shaped covers
(B). Â for talcum powder Containers
(C). Â for printed circuitry Laminates
(D). Â Insulators for motors
(E). None of these
Multiple Choice Question Answer: Â b
_________ act as a catalyst in the preparation of PVC.
(A). Â Benzoyl peroxide
(B). Â Grignard reagent
(C). Â Potassium amide
(D). Â Lewis acid
(E). None of these
Multiple Choice Question Answer:Â a
_____ statement is incorrect about the Teflon.
(A). Â It is chemically and dense inert
(B). Â there are good electrical insulation properties
(C). Â there is a high density of the order 2.1 to 2.3 gm/cm3
(D). Â there is a high coefficient of friction
(E). None of these
Multiple Choice Question Answer:Â d
PVC is a polymeric polar molecule the C-Cl dipole makes.
(A). Â True
(B). Â False
(E). None of these
Multiple Choice Question Answer: Â a
____ is not an example of thermoplastic?
(A). Â Vulcanised rubber
(B). Â Nylon
(C). Â PVC
(D). Â Polyester
(E). None of these
Multiple Choice Question Answer: Â a
______is used for making chewing gums.
(A). Â Perspex
(B). Â Teflon
(C). Â Polystyrene
(D). Â Polyvinyl acetate
(E). None of these
Multiple Choice Question Answer: Â d
_____ is an application of Teflon.
(A). Â Audio cassettes
(B). Â Combs and brush handles
(C). Â Optical fibres
(D). Â Coatings of frying pans
(E). None of these
Multiple Choice Question Answer: Â d
By the process of which of the following polymerisation of ethylene, Polythene is prepared.
(A). Â Living
(B). Â Condensation
(C). Â Free-radical
(D). Â Addition
(E). None of these
Multiple Choice Question Answer: Â d
Which of the following is thermoplastic?
(A). Â Insoluble
(B). Â Amorphous
(C). Â Cross-linked
(D). Â Held by a covalent bond
(E). None of these
Multiple Choice Question Answer: Â b
Engineering Chemistry MCQs
Solved MCQs of engineering Chemistry.
- Engineering Chemistry Important MCQs
- Adsorption Isotherm MCQs | Chemistry
- Biodegradable Polymers MCQs
- Chromatography MCQs Â
- Polymer MCQs
- Chirality MCQs
- Conductivity and Conformations MCQs
- Crystallization and Dendrimers MCQs
- Distillation and Effect of Temperature on reaction rate
- Elastomers MCQs
- Electromeric Effect and Electronic Spectroscopy MCQs
- Electrophilic Substitution Reaction MCQs
- Engineering Materials and Fibers MCQs
- Fission of Covalent Bond MCQs
- Fractional Distillation MCQs
- Gibb’s Phase Rule Solved MCQs
- Hybridization, Homonuclear and Heteronuclear Molecules MCQs | Chemical Engineering MCQs
- Hyperconjugation and Inductive Effect MCQs
- Chemical Reactions MCQs
- Intermolecular Forces and Melting Point MCQs
- Laws of Photochemistry and Mesomeric Effect MCQs
- Micelles and Molecular Aggregation MCQs Questions Answers
- Molecular Spectroscopy and Molecularity of a Reaction MCQs
- Nuclear Magnetic Resonance and Components MCQs Questions Answers
- Nucleophilic Substitution Reaction MCQs
- Optical Isomerism and Order of a Reaction MCQs
- Organic Conducting Polymers and Origin of spectrum MCQs
- Particle Size Measurement and Pseudo Order Reaction MCQs
- Phases and Components MCQs
- Photochemical Reactions and Photosynthesis MCQs
- Polymerization, Polymer Blends, and Polymeric Composites MCQs
- Quantum MCQs
- Silicones and Polymeric Composites and R, S- Configuration and Water Softening MCQs
- Stereoselectivity, Stereospecificity and Stereo Structure of Polymers MCQs
- Steam Distillation and Surface Tension MCQs
- Thermoplastic Polymers MCQs
- Chromatography and Vibrational Spectroscopy MCQs
- Valence Bond Theory and Two-Component System MCQs