Chemical Engineering Mcqs

The organic acid monomer in nylon-66 is __________________?

(A) Sebacic acid
(B) Terephthalic acid
(C) Adipic acid
(D) Benzoic acid

Submitted By :Ali Uppal

Non sulphonated hard bakelites are not used for making _______________________?

(A) Ion-exchange resins
(B) Fountain pen barrels
(C) Formica table tops
(D) Combs

Submitted By :Ali Uppal

Density of high density polythene is about __________ gm/c.c ?

(A) 1.18
(B) 1.05
(C) 0.95
(D) 0.99

Submitted By :Ali Uppal

Bakelite is a/an ______________________?

(A) Addition polymer
(B) Elastomer
(C) Thermoplastic
(D) None of these

Submitted By :Ali Uppal

Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of _______________ percent?

(A) 1-1000
(B) 1000-1500
(C) 1500-2000
(D) 2000-2500

Submitted By :Ali Uppal

Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by _______________, which decompose to give free radicals?

(A) Organic peroxides
(B) Sulphuric acid
(C) Hydrofluoric acid
(D) None of these

Submitted By :Ali Uppal

The monomer of poly vinyl chloride (PVC) is__________________?

(A) Chloroethane
(B) Ethylene dichloride
(C) Ethyl chloride
(D) Chloroform

Submitted By :Ali Uppal

Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its__________________?

(A) Tensile strength
(B) Chemical resistance
(C) Flexibility
(D) All

Submitted By :Ali Uppal

Which of the following is generally not used as eord for synthetic rubber tyre casing ?

(A) Dacron
(B) Nylon
(C) Cellulose
(D) None of these

Submitted By :Ali Uppal

Which of the following is not present in bagasse fiber?

(A) Cellulose
(B) Lignin
(C) Pentogens
(D) None of these

Submitted By :Ali Uppal

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