Chemical Engineering MCQs

Page No. 746

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to_________________?


aAdjust the pH of the syrup

✓


bRemove the coloring matter from the syrup

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cReduce the viscosity of the syrup

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dImprove the rate of crystallisation of sugar

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Which of the following impurities in feed water for high pressure boiler is the most detrimental ?


aSilica

✓


bDissolved oxygen

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cSuspended salt

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dDissolved salt

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View Answer Silica

Penicillin, an antibiotic drug was discovered by__________________?


aAlexander

✓


bFlaming

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cDoctor Zhivago

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dNone of these

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View Answer Alexander

_________________ is produced using Polycondensation Reaction?


aPolythene

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bPhenol formaldehyde

✓


cPoly vinyl chloride

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dNone of these

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View Answer Phenol formaldehyde

A mixture of chlorine & sodium bromide acts as a/an_________________?


aInsecticides

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bAnalgesic drug

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cFire retardant

✓


dHydrogenation catalyst

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View Answer Fire retardant

Sucrose is a__________________?


aMonosaccharide

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bDisaccharide

✓


cPolysaccharide

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dNone of these

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View Answer Disaccharide

Nylon-6 as compared to Nylon-66 is having higher___________________?


aHardness

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bAbrasion/resistance

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cMelting point

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dNone of these

✓


View Answer None of these

Chemical formula of BHC, which is an insecticide is__________________?


aC6H6Cl6

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bC6Cl6

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cC6H5Cl

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dC6H4Cl2

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View Answer C6Cl6

In an integrated steel plant, NH3 present in coke oven gas is normally recovered as_________________?


a(NH4)2SO4

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bNH4Cl

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c(NH4)2 NO3

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dLiquid NH3

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View Answer (NH4)2SO4

Concentration of NaOH solution produced by diaphragm electrolytic cell is about _______________ percent?


a10

✓


b25

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c50

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d98

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View Answer 10

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