a) 15eV b) 15keV c) 30eV d) 30keV Answer: b Explanation: Energy of an electron is ...
View QuestionWhich of the following is not a heating source in metallization?
a) Convection heating b) Resistance heating c) Induction heating d) Electron beam heating Answer: a Explanation: Convection ...
View QuestionWhich of the following metal is not used in vacuum metallization?
a) Aluminium b) Nickel c) Chromium d) Sodium Answer: d Explanation: Sodium is not used in metallization. ...
View QuestionA __________ is a highly concentrated blend of an additive and a carrier resin.
a) Masterpolymer b) Mastermixture c) Masterbatch d) Masterblend Answer: c Explanation: A masterbatch is a highly concentrated ...
View QuestionSmart blending works on the principle of ________
a) Chaotic addition b) Chaotic advection c) Chaotic adversion d) Chaotic abstraction Answer: b Explanation: Smart blending ...
View QuestionPolymers used for packaging films must have a surface energy – _______
a) 5-25 mNm-1 b) 29-45 mNm-1 c) 45-55 mNm-1 d) 10-25 mNm-1 Answer: b Explanation: Polymers ...
View QuestionWhich of the following materials is the outermost lamination layer in tetrapacks?
a) Polyester b) Polypropylene c) Polyethylene d) Polystyrene Answer: a Explanation: Polyester is ...
View QuestionLacquering and lamination are the same terms.
a) True b) False Answer: b Explanation: The given statement is false. Lacquering is a term ...
View QuestionASTM stands for _____
a) American Society for Testing Machines b) American Society for Tempering Machines c) American Society for Testing and ...
View QuestionWhich of the following lamination methods doesn’t require an adhesive for lamination?
a) Dry bonding lamination b) Solventless lamination c) Extrusion lamination d) Wet bonding lamination Answer: c Explanation: ...
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