chemical engineering MCQs – Page 63

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs

1241. Viscose rayon is__________________?
0

A. Regenerated cellulose nitrate

B. Cellulose nitrate

C. Regenerated cellulose acetate

D. None of these

1242. Synthesis gas is a mixture of__________________?
0

A. CO2 and H2

B. CO and H2

C. H2, CH4 and CO

D. N2 and H2

1243. Pick out the wrong statement ?
0

A. Raw materials for DDT manufacture are benzene and chlorine

B. In nylon-6, the number 6 represents the total number of carbon atoms in the ring

C. Ethanolamines are produced by using ammonia and ethylene oxide as raw material

D. Catalytic hydrogenation of carbon monoxide produces methyl alcohol

1244. More than 100 percent of _________________ is present in oleum?
0

A. H2SO4

B. H2SO3

C. SO2

D. SO3

1245. Oils are partially hydrogenated (not fully) to manufacture Vanaspati , because fully saturated solidified oils ?
0

A. Are prone to rancid oxidation

B. Always contain some amount of nickel (as their complete removal is very difficult)

C. Cause cholesterol build up and blood clotting

D. Have affinity to retain harmful sulphur compounds

1246. The ideal pulp for the manufacture of paper should have high ____________________ content?
0

A. Cellulose

B. Lignin

C. Both A. & B.

D. None of these

1247. Which of the following is an endothermic reaction ?
0

A. Absorption of SO3 in 98% H2SO4

B. C + H2O = CO + H2

C. Thermal dissociation of iron pyrites

D. Both B. and C.

1248. Calcareous & argillaceous materials are used in the manufacture of ___________________?
0

A. None of these

B. Cement

C. Lead

D. Carbon disulphide

1249. Which of the following is the main constituent of the mother liquor produced in salt industry ?
0

A. Salt petre

B. Bromine

C. Quick lime

D. Glaubers salt

1250. Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have___________________?
0

A. Sharp melting points

B. High electrical insulation properties

C. Low co-efficient of thermal expansion

D. Compressive strength much greater than their tensile strengths

1251. Which of the following is used as a coagulant in water treatment ?
0

A. Ferrous sulphate

B. Hydrogen peroxide

C. Chlorine

D. Chloramine

1252. At very high concentration of enzymes, the rate of fermentation chemical reaction is _____________ the concentration of reactants?
0

A. Proportional to the square of

B. Independent of

C. Directly proportional to

D. Inversely proportional to

1253. Thermosetting materials ______________________?
0

A. None of these

B. Are solvent soluble

C. Soften on application of heat

D. Are cross-linked molecules

1254. The most stable allotropic form of phosphorous is the _________________ phosphorous?
0

A. Red

B. White

C. Black

D. Yellow

1255. Dense soda ash used in the manufacture of glass, is chemically represented by__________________?
0

A. Na2CO3.H2O

B. Na2HCO3

C. Na2CO3.10H2O

D. Na2CO3

1256. Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?
0

A. Diaphragm electrolytic cell process

B. Lime-soda process

C. Mercury electrolytic cell process

D. None of these

1257. Zeolite is a/an___________________?
0

A. Abrasive material

B. None of these

C. Naturally occuring clay which is capable of exchanging cations

D. Catalyst used in shift conversion

1258. Ordinary glass is not a/an_________________?
0

A. Material with sharp definite melting point

B. Electrical insulator

C. Supercooled liquid

D. Amorphous isotropic material

1259. Helium is produced on commercial scale from__________________?
0

A. None of these

B. Natural gas

C. Coke oven gas

D. Air

1260. Magnesium and calcium ______________ cause temporary hardness of water ?
0

A. Carbonates

B. Sulphates

C. Phosphates

D. Bicarbonates

Previous Next

Showing 1241 to 1260 of 8709 mcqs