Chemical Engineering Mcqs

Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about _____________ percent?

(A) 75
(B) < 10
(C) > 30
(D) 50

Submitted By :Ali Uppal

Kopper-Totzek coal gasifier_________________?

(A) Can give ammonia synthesis gas (H2 + N2)
(B) Is a moving bed reactor
(C) Cannot use coking coal
(D) Operate at very high pressure

Submitted By :Ali Uppal

Carboxymethyl cellulose (CMC) is added in detergents to act as a/an___________________?

(A) Surfactant
(B) Builder
(C) Optical brightening agent
(D) Anti soil redeposition agent

Submitted By :Ali Uppal

Lindane is____________________?

(A) Not a fumigant
(B) BHC (Benzene Hexachloride) containing 99% γ-isomer
(C) A by-product of BHC manufacture
(D) Both

Submitted By :Ali Uppal

Sodium chloride content in sea water is about _______________ gms/liter?

(A) 2
(B) 10
(C) 25
(D) 50

Submitted By :Ali Uppal

Which of the following is the main constituent of the mother liquor produced in salt industry ?

(A) Quick lime
(B) Glauber’s salt
(C) Salt petre
(D) Bromine

Submitted By :Ali Uppal

______________ paper is used in the manufacture of newsprint paper ?

(A) Ground-wood
(B) Board
(C) Tissue
(D) Wrapping

Submitted By :Ali Uppal

Pick out the exothermic reaction out of the following ?

(A) C + H2O = CO + H2
(B) CaC2 + H2O = Ca(OH)2 + C2H2
(C) MgCO3 = MgO + CO2
(D) All (A),

Submitted By :Ali Uppal

Which of the following, when pyrolysed, produces Perchloroethylene ?

(A) Ethylene dichloride
(B) Chlorobenzene
(C) Carbon tetrachloride
(D) Chlorinated paraffin

Submitted By :Ali Uppal

Magnesium and calcium ______________ cause temporary hardness of water ?

(A) Carbonates
(B) Bicarbonates
(C) Phosphates
(D) Sulphates

Submitted By :Ali Uppal

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