Multiple Choice Questions and Answers (MCQ) Chemical Engineering Process
01. Boiling of water containing temporary hardness produces
(A) CO2
(B) CaSO4
(C) CaHCO3
(D) None of these
Answer: Option A
02. Fourdrinier machine is used in the manufacture of
(A) Nylon-6
(B) Paper
(C) Antibiotics
(D) Sugar
Answer: Option B
03. Na2CO3.10H2O is called
(A) Washing soda
(B) Soda ash
(C) Slaked lime
(D) Quicklime
Answer: Option A
04. Fire clay is __________ refractory material.
(A) A basic
(B) An acidic
(C) A neutral
(D) Not a
Answer: Option B
05. Bisphenol A is produced by the condensation of acetone with
(A) Formaldehyde
(B) Ethyl alcohol
(C) Diethyl ether
(D) Phenol
Answer: Option D
06. Vegetable oils and fats basically differ in their
(A) Density ranges
(B) Physical state
(C) Chemical composition
(D) Chemical properties
Answer: Option B
07. CaSO4 .½H2O is known as
(A) Blue vitriol
(B) Plaster of Paris
(C) Gypsum
(D) Zeolite
Answer: Option B
08. Economics of ‘Solvay Process’ depends upon the efficiency of
(A) Carbonating tower
(B) Ammonia recovery
(C) Ammonia recovery and size of the plant
(D) Ammoniation of salt solution
Answer: Option C
09. Shaving soaps are
(A) Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property
(B) Metallic soaps compounded with frothing agents
(C) High free alkali soaps having excess of cane sugar and alcohol
(D) None of these
Answer: Option A
10. At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).
(A) P
(B) √P
(C) P2
(D) 1/P
Answer: Option B
11. Baking soda is chemically represented by
(A) Na2CO3
(B) NaHCO3
(C) Na2CO3.H2O
(D) Na2CO3.10H2O
Answer: Option B
12. Direct conversion of chemical energy into electrical energy is done in a
(A) Magnetohydrodynamic (MHD) generator
(B) Fuel cell
(C) Fast breeder reactor
(D) None of these
Answer: Option B
13. Extraction of __________ employs an electrolytic process.
(A) Aluminium
(B) Silver
(C) Copper
(D) All (A), (B) and (C)
Answer: Option A
14. Inversion of sucrose produces
(A) Fructose
(B) Glucose
(C) Both (A) & (B)
(D) Neither (A) nor (B)
Answer: Option B
15. Phenolic antiseptics are added in the __________ soap.
(A) Shaving
(B) Medicated
(C) Metallic
(D) Transparent
Answer: Option B
16. Soap cannot be used with hard water, because
(A) Hard water contains sulphate
(B) They form insoluble calcium soaps which precipitate
(C) They attract back the removed dirt
(D) None of these
Answer: Option B
17. The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2/gm.
(A) 800
(B) 1600
(C) 4000
(D) 8500
Answer: Option B
18. Carborundum consists mainly of
(A) Bauxite
(B) Silicon carbide
(C) Boron carbide
(D) Calcium carbide
Answer: Option B
19. Pick out the wrong statement.
(A) Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively
(B) Protein catalysts are called enzymes
(C) The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes
(D) Total sugar content in molasses is about 10%
Answer: Option D
20. Yellow phosphorus is transported under
(A) Air
(B) Water
(C) Nitrogen
(D) Helium
Answer: Option B
21. Carboxymethyl cellulose (CMC) is added in detergents to
(A) Prevent redeposition of soil on cleaned surface
(B) Act as optical brightening agent
(C) Inhibit corrosion in washing machines made of aluminium
(D) None of these
Answer: Option A
22. Nitric acid is not used in the manufacture of
(A) Detergents
(B) Fertilisers
(C) Aqua regia
(D) Explosives
Answer: Option A
23. Styrene (a monomer for the production of polystyrene) is commercially produced by
(A) Catalytic dehydrogenation of ethyl benzene
(B) Dehydration of ethyl alcohol followed by hydrogenation
(C) Reacting ethylene oxide with acetaldehyde
(D) Fermentation of starch
Answer: Option A
24. Which of the following is an explosive?
(A) Nitro-glycerine
(B) Trinitrotoluene (TNT)
(C) Cellulose nitrate
(D) All (A), (B), and (C)
Answer: Option D
25. Reaction of calcium carbide with water produces a gas, which is used
(A) As an illuminant
(B) For metal cutting/welding
(C) Both (A) & (B)
(D) Neither (A) nor (B)
Answer: Option C