Polymer Technology Plastic tubes & pipes are generally made by __________ moulding. Extrusion Compression Injection Transfer Extrusion Compression Injection Transfer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polythene is a/an None of these Thermosetting material Condensation polymerisation product Addition polymerisation product None of these Thermosetting material Condensation polymerisation product Addition polymerisation product ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their Resistance to heat Molecular sizes Magnitude of intermolecular forces Polymerisation mechanism Resistance to heat Molecular sizes Magnitude of intermolecular forces Polymerisation mechanism ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its Weathering characteristics Elasticity Plasticity Strength Weathering characteristics Elasticity Plasticity Strength ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Vulcanisation of rubber does not increase its Elasticity & water solubility Softness Weight & strength Oxidation resistance Elasticity & water solubility Softness Weight & strength Oxidation resistance ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are - 20°C and 1 kgf/cm² 5°C and 1 kgf/cm² 0°C and 1 kgf/cm² 0°C and 3 kgf/cm² - 20°C and 1 kgf/cm² 5°C and 1 kgf/cm² 0°C and 1 kgf/cm² 0°C and 3 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP