GATE XE 2019 Paper 1 — page 40

Questions 118–120 of 175. Imported answers require review unless explicitly marked reviewed.

Paper practice 175 questionsPage 40 of 59

Polystyrene coffee cup can be most economically manufactured by

Your answerChoose one option.

thermoforming

injection molding

compression molding

blow molding

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Match the following rubber additives to their function:

Additive P. Tetramethyl thiuram disulfide Q. Xylyl mercaptan R. Sulfur S. Microcrystalline wax

Function

Peptizer

Antizonant

Accelerator

Cross-linking agent

Your answerChoose one option.

P-4, Q-1, R-3, S-2

P-3, Q-1, R-4, S-2

P-3, Q-2, R-4, S-1

P-4, Q-2, R-3, S-1

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Match the following polymers with their characteristic infrared (IR) stretching frequency:

Polymer P. Polystyrene Q. Polyacrylonitrile R. Poly(ethylene terephthalate) S. Poly(vinyl alcohol)

IR stretching frequency (cm⁻¹)

~2242

~1733

~3392

~3100

Your answerChoose one option.

P-2, Q-3, R-1, S-4

P-2, Q-1, R-4, S-3

P-4, Q-2, R-3, S-1

P-4, Q-1, R-2, S-3

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2019 · Paper 1