Chemical Process Equipment Design Online Practice Test - Set 24 - ObjectiveBooks

Chemical Process Equipment Design Online Practice Test - Set 24

Practice Test: Question Set - 24

1. Portland cement consists mainly of
    (A) CaO & SiO2
    (B) SiO2 & Al2O3
    (C) CaO & Al2O3
    (D) CaO & Fe2O3

2. Ethyl alcohol cannot be produced
    (A) From waste sulphite substrate of paper mills
    (B) By Esterification and hydrolysis of ethylene
    (C) From molasses
    (D) None of these

3. Fluorescent dyes are added in detergents to
    (A) Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics
    (B) Attain distinctiveness from other brands
    (C) Act as tarnish inhibitor for metals like German silver
    (D) None of these

4. Which of the following sugars is the sweetest?
    (A) Glucose
    (B) Fructose
    (C) Sucrose
    (D) Lactose

5. Varnish does not contain
    (A) Thinner
    (B) Pigment
    (C) Both (a) & (b)
    (D) Neither (a) nor (b)

6. Temporary hardness of water can be removed by
    (A) Addition of alum (a coagulant)
    (B) Boiling
    (C) Filtration (through gravity sand filter)
    (D) Addition of lime

7. Main constituents of natural rubber is
    (A) Polystyrene
    (B) Polyisoprene
    (C) Polybutadiene
    (D) Polychlorophrene

8. Epoxy resin
    (A) Is a good adhesive
    (B) Is an elastomer
    (C) Cannot be used for surface coatings
    (D) Is a polyester

9. Deacon's method is used for the manufacture of
    (A) Glauber's salt
    (B) Common salt
    (C) Chlorine
    (D) Graphite electrode

10. Hydrogenation of oil/fat does not
    (A) Improve its resistance to rancid oxidation
    (B) Raise its melting point
    (C) Remove double bonds
    (D) None of these

11. Pick out the wrong statement.
    (A) Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate
    (B) Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide
    (C) Ordinary glass is represented chemically by Na2O . CaO . 6SiO2
    (D) Red color is imparted to glass by addition of arsenic oxide

12. Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its
    (A) Poor oxidation stability and high gum forming tendency
    (B) Greater tendency of decomposition at elevated temperature
    (C) Hydrolysis tendency in presence of water
    (D) All (a), (b) and (c)

13. Which of the following is not required in the manufacture of soda ash by Solvay process?
    (A) Ammonia
    (B) Limestone
    (C) Nitric acid
    (D) None of these

14. Fusion of limestone and __________ produces high alumina cement.
    (A) Sand
    (B) Bauxite
    (C) Quicklime
    (D) Calcite

15. Basic oxide is absent in __________ glass.
    (A) Flint
    (B) Pyrex
    (C) Quartz
    (D) All (a), (b) & (c)

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