Chemical Process Limiting Reactant MCQ Questions - Set 40 - ObjectiveBooks

Chemical Process Limiting Reactant MCQ Questions - Set 40

Practice Test: Question Set - 40


1. Presence of sodium tripolyphosphate (an additive) in synthetic detergent
    (A) Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
    (B) Inhibits its corrosive effects
    (C) Does not allow redeposition of dirt on the cleaned surface
    (D) None of these

2. Triple superphosphate is manufactured by reacting
    (A) Phosphate rock with phosphoric acid
    (B) Phosphate rock with sulphuric acid
    (C) Phosphate rock with nitric acid
    (D) Ammonium phosphate with phosphoric acid

3. Ultimate analysis of coal determines its __________ content.
    (A) Carbon, hydrogen, nitrogen & sulphur
    (B) Carbon, ash, sulphur & nitrogen
    (C) Carbon, sulphur, volatile matter & ash
    (D) Carbon, volatile matter, ash & moisture

4. Phenol formaldehyde resin is used as an adhesive in making
    (A) Laminates
    (B) Card boxes
    (C) Furniture
    (D) Books

5. Poly Tetrafluoroethylene (P.T.F.E.) is known as
    (A) Bakelite
    (B) Teflon
    (C) Celluloid
    (D) Dacron

6. Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about
    (A) 0.1 to 0.5
    (B) 1 to 5
    (C) 5 to 10
    (D) 15 to 25

7. Systemic insecticides
    (A) Are absorbed throughout the plant
    (B) Kill insects following external bodily contact
    (C) Are stomach poisons
    (D) Emit poisonous vapour

8. Phthalic anhydride is produced by the oxidation of
    (A) Naphthalene
    (B) Benzene
    (C) Toluene
    (D) Aniline

9. Most commonly used rubber vulcanizing agent is
    (A) Sulphur
    (B) Bromine
    (C) Platinum
    (D) Alumina

10. Chemical name of Grignard reagent is
    (A) Sodium thiosulphate
    (B) Ethyl magnesium chloride
    (C) Sodium sulphite
    (D) Sodium bicarbonate

11. Yeast is used in the manufacture of
    (A) Penicillin
    (B) Antibiotics
    (C) Wine
    (D) Pasteurised milk

12. Pick out the wrong statement.
    (A) DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence of oleum, which is a highly exothermic reaction
    (B) Chloral is obtained by the chlorination of ethyl alcohol
    (C) Insecticides acting on the insects through the respiratory system are called fumigants
    (D) Benzene hexachloride is not a contact insecticide

13. Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
    (A) 70
    (B) 55
    (C) 80
    (D) 94

14. Lurgi coal gasifier is a pressurized __________ bed reactor.
    (A) Moving
    (B) Fixed
    (C) Fluidized
    (D) Entrained

15. Soaps remove dirt by
    (A) Increasing the surface tension
    (B) Decreasing wettability
    (C) Supplying hydrophilic group
    (D) None of these

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