Chemical Process Analytics MCQ Practice Questions - Set 21 - ObjectiveBooks

Chemical Process Analytics MCQ Practice Questions - Set 21

Practice Test: Question Set - 21

1. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
    (A) Its calorific value is very less
    (B) Tar neutralizes the residual acids present in pitch
    (C) It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
    (D) All (a), (b) and (c)

2. Kaolin is a/an
    (A) Refractory material
    (B) Synthetic resin
    (C) Artificial abrasive
    (D) Blue pigment

3. Calcination of limestone is not done in a __________ kiln for producing lime.
    (A) Vertical shaft
    (B) Rotary
    (C) Fluidized bed
    (D) Fixed bed

4. In the manufacture of viscose rayon, the raw material used industrially is
    (A) Eucalyptus wood
    (B) Bamboo
    (C) Bagasse
    (D) Fine teak wood

5. Starting raw material for the manufacture of alum is
    (A) Alumina
    (B) Gypsum
    (C) Bauxite
    (D) Ammonium bicarbonate

6. Plasticizers are added to paints to
    (A) Make it corrosion resistant
    (B) Make glossy surface
    (C) Give elasticity & prevent cracking of the film
    (D) Increase atmospheric oxidation

7. Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
    (A) Brighten the faint images
    (B) Remove metallic silver
    (C) Convert silver chloride to silver
    (D) Remove unexposed silver halide

8. BHC (Benzene hexachloride) is made by the chlorination of benzene
    (A) Which is an addition reaction
    (B) Which is a substitution reaction
    (C) In absolute dark
    (D) In presence of sunlight

9. The combustion reaction, C + O2 = CO2, is
    (A) Exothermic
    (B) Endothermic
    (C) Autocatalytic
    (D) None of these

10. __________ iron is the purest form of iron.
    (A) Cast
    (B) Wrought
    (C) Pig
    (D) High silicon

11. Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.
    (A) 25
    (B) 60-70
    (C) 150-200
    (D) 250-300

12. Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and
    (A) Sulphuric acid
    (B) Phosphoric acid
    (C) Hydrochloric acid
    (D) Hydrofluoric acid

13. Styrene-butadiene-rubber (SBR) as compared to natural rubber has
    (A) Poorer tensile strength
    (B) Poorer resistance to oxidation
    (C) Greater amount of heat build-up under heavy loading
    (D) All (a), (b) and (c)

14. Neoprene is chemically known as
    (A) Polybutadiene
    (B) Styrene butadiene rubber (SBR)
    (C) Polyurethane
    (D) Polychlorophrene

15. Impurities present in brine is normally removed by treatment with
    (A) NH3 and CO2
    (B) Lime and soda ash
    (C) Lime, ammonia and carbon
    (D) All (a), (b) and (c)

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