Description : Which of the following binary systems is an example of a maximum boiling azeotrope? (A) Water-hydrochloric acid (B) Acetone-carbon disulphide (C) Water-ethyl alcohol (D) n-heptane-n-octane
Last Answer : (A) Water-hydrochloric acid
Description : Pick out the system with minimum boiling azeotrope at 1 atm. (A) Benzene-toluene (B) Ethyl alcohol-water (C) Hydrochloric acid-water (D) All (A), (B) and (C)
Last Answer : (B) Ethyl alcohol-water
Description : Which of the following mixtures does not form an azeotrope at atmospheric pressure? (A) Water-alcohol (B) Methyl alcohol-acetone (C) Butyl acetate-water (D) None of these
Last Answer : (D) None of these
Description : Out of the following, TLV of __________ is maximum (about 500 ppm). (A) Carbon dioxide (B) Toluene (C) Carbon disulphide (D) Acetaldehyde
Last Answer : (A) Carbon dioxide
Description : When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system ... at the concentration of the plait point (D) All (A), (B) and (C
Last Answer : (D) All (A), (B) and (C
Description : Maleic anhydride is produced by catalytic oxidation of (A) Toluene (B) Ethyl alcohol (C) Naphthalene (D) Benzene
Last Answer : (D) Benzene
Description : Flash distillation is suitable for separating the constituents of a binary system, which (A) Form minimum boiling azeotrope (B) Have very wide boiling points (C) Have very close boiling points (D) Form constant boiling azeotrope
Last Answer : (B) Have very wide boiling points
Description : Flash distillation is suitable for the separation of components (A) Having very close boiling points (B) Which form maximum boiling azeotrope (C) Having very wide boiling points (D) Which form minimum boiling azeotrope
Last Answer : (C) Having very wide boiling points
Description : Lecithins are soluble in ordinary solvents except (A) Benzene (B) Ethyl alcohol (C) Methyl alcohol (D) Acetone
Last Answer : Answer : D
Description : Proteins are soluble in (A) Anhydrous acetone(B) Aqueous alcohol (C) Anhydrous alcohol (D) Benzene
Last Answer : Answer : B
Description : What is the major organic product of the reaction between benzene and isobutyl chloride in the presence of AlCl3? (a) tert-butylbenzene (b) isobutylbenzene (c) n-butylbenzene (d) chlorobenzene
Last Answer : tert-butylbenzene
Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane
Last Answer : Benzene
Description : Solvent used in extractive distillation (A) Is of low volatility (B) Forms a low boiling azeotrope (C) Forms a high boiling azeotrope (D) Does not alter the relative volatility of the original components
Last Answer : (B) Forms a low boiling azeotrope
Description : Entrainer used in Azeotropic distillation should (A) Form a low boiling azeotrope with one of the constituents of the mixture (B) Form a new azeotrope of low relative volatility with one of the ... (C) Have high latent heat of vaporisation (D) Have high viscosity to provide high tray efficiency
Last Answer : (A) Form a low boiling azeotrope with one of the constituents of the mixture
Description : Which of the following solutions will follow Raoult's law most closely? (A) A solution of benzene, toluene and o-xylene (B) 35% solution of camphor in water (C) 35% solution of NH3 in water (D) A solution of polar organic compounds (not of homologue of a series)
Last Answer : (A) A solution of benzene, toluene and o-xylene
Description : Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene? (A) Reforming (B) Pyrolysis (C) Alkylation (D) Hydrocracking
Last Answer : (A) Reforming
Description : . Main constituents of Benzol are (A) Benzene, toluene & xylene (B) Tar & creosote (C) Ammonia & phenol (D) Anthracene & phenol
Last Answer : (A) Benzene, toluene & xylene
Description : Benzol is used (A) As a motor fuel blend (B) For producing benzene, toluene & xylene by its distillation (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Phthalic anhydride is produced by the oxidation of (A) Naphthalene (B) Benzene (C) Toluene (D) Aniline
Last Answer : (B) Benzene
Description : Trinitrotoluene (TNT), an explosive, is made by the nitration of (A) Nitrobenzene (B) Toluene (C) Nitrotoluene (D) Benzene
Last Answer : (B) Toluene
Description : The terminology 'BTX' used in coal tar distillation industry refers to (A) Benzol-toluol-xylol (B) Benzol-toluene-xylene (C) Benzene-toluol-xylol (D) Benzene-toluene-xylene
Last Answer : (D) Benzene-toluene-xylene
Description : Catalytic oxidation of toluene produces (A) Styrene (B) Phenol (C) Benzene (D) Tri-nitro-toluene
Last Answer : (B) Phenol
Description : Hydroboration-oxidation of propene gives : (a) Isopropyl alcohol (b) n-Propyl alcohol (c) Isobutyl alcohol (d) tert-Butyl alcohol
Last Answer : n-Propyl alcohol
Description : Out of (a) HNO3 + H2O and (b) C6H6 + C6H5CH3 which will form max. boiling azeotrope ?
Last Answer : (a) HNO3 + H2O.
Description : Acetone is produced by catalytic dehydrogenation of (A) Phenol (B) Naphthalene (C) Isopropanol (D) Ethyl benzene
Last Answer : (C) Isopropanol
Description : Chemical name of Gammaxane is - (1) Toluene (2) Chloro benzene (3) Aniline (4) Benzene hexachloride
Last Answer : (4) Benzene hexachloride Explanation: Gammexane is an insecticide that is the gamma isomer of benzene hexachloride. It is also known as lindane. Benzene hexachloride is any of several stereoisomers of 1,2,3,4,5,6- hexachlorocyclohexane formed by the lightinduced addition of chlorine to benzene.
Description : A mixture of benzene and toluene forms (1) Non-ideal solution (2) Ideal solution (3) Emulsion (4) Suspension
Last Answer : (2) Ideal solution Explanation: A mixture of benzene and toluene (60 mole% toluene) enters a distillation column to be separated into two product streams.
Description : Out of benzene, m–dinitrobenzene and toluene which will undergo nitration most easily and why?
Last Answer : Ans. -CH3 group is electron donating while –NO2 group is electron withdrawing. Therefore, maximum electron density will be in toluene , followed by benzene and at least in m-dinitrobenzene. Therefore, the ease of nitration decreases in the order: Toluene> benzene> m-dinitrobenzene
Last Answer : Ans. -CH3 group is electron donating while –NO2 group is electron withdrawing. Therefore, maximum electron density will be in toluene, followed by benzene and at least in m-dinitrobenzene. Therefore, the ease of nitration decreases in the order: Toluene> benzene> m-dinitrobenzene
Description : Resorcinol on distillation with zinc dust gives (a) Benzene (b) Cyclohexane (c) Toluene (d) m-Xylene
Description : Which of the following compounds is most readily sulfonated? (a) Benzene (b) Chlorobenzene (c) Toluene (d) Nitrobenzene
Last Answer : Toluene
Description : Which of the following compounds undergoes nitration most readily? (a) Benzene (b) Toluene (c) Nitrobenzene (d) Benzoic acid
Description : Compared to benzene, nitration of toluene takes place at (a) Same rate (b) Faster rate (c) Slower rate (d) Can not predict
Last Answer : Faster rate
Description : Cresols on distillation with zinc dust gives (a) o-Xylene (b) Benzene (c) o- plus p-Xylene (d) Toluene
Description : Which of the following statements is false about toluene? (a) can be prepared by treating benzene with methyl chloride in the presence of AlCl3. (b) is converted to benzoic acid on refluxing with ... (d) can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene.
Last Answer : can be nitrated with concentrated nitric acid to give a mixture of ortho and meta nitrotoluene
Description : When propyne is passed through hot iron tube at 400°C, it gives (a) Benzene (b) Toluene (c) m-Xylene (d) Mesitylene
Last Answer : Mesitylene
Description : When acetylene is passed through hot iron tube at 400°C, it gives (a) Benzene (b) Toluene (c) o-Xylene (d) Mesitylene
Description : 40. Among the following compounds the one that is most reactive towards electrophilic nitration is: (1) Benzene (2) Benzoic acid (3) Nitrobenzene (4) Toluene
Description : Chemical name of Gammaxane is (1) Toluene (2) Chloro benzene (3) Aniline (4) Benzene hexachloride
Last Answer : Benzene hexachloride
Description : Nail polish remover contains? (1) benzene (2) acetic acid (3) acetone (4) petroleum ether
Last Answer : (3) Acetone Explanation: Acetone can remove artificial nails made of acrylic or cured gel. A less harsh nail polish remover is ethyl acetate, which often also contains isopropyl alcohol. Ethyl acetate is usually the original solvent for nail polish itself.
Description : Which of the following is present in Nail polish remover? (1) Citric acid (2) Acetone (3) Ethylene (4) Benzene
Last Answer : (2) Acetone Explanation: Acetone can also remove artificial nails made of acrylic or cured gel. An alternative nail polish remover is ethyl acetate, which often also contains isopropyl alcohol.
Description : Nail polish remover contains? (1) Benzene (2) acetic acid (3) acetone (4) petroleum ether
Last Answer : (3) acetone Explanation: Acetone can remove artificial nails made of acrylic or cured gel. A less harsh nail polish remover is ethyl acetate, which often also contains isopropyl alcohol. Ethyl acetate is usually the original solvent for nail polish itself.
Description : Nail polish remover contains------? A. Acetone (Answer) B. Benzene C. Acetic acid D. Petroleum ether
Last Answer : A. Acetone (Answer)
Description : Which of the reactions between the following pairs of reagents proceeds by a mechanism that may be described as an electrophilic substitution? (a) Benzene + Br2/FeBr3 (b) Propene + Br2 (c) Acetone + NH2NH2 (d) Ethyl bromide + aq KOH
Last Answer : Benzene + Br2/FeBr3
Description : Pick out the wrong statement. (A) Catalytic hydrogenation of carbon monoxide produces methyl alcohol (B) In nylon-6, the number 6 represents the total number of carbon atoms in the ring (C ... are benzene and chlorine (D) Ethanolamines are produced by using ammonia and ethylene oxide as raw material
Last Answer : (C) Raw materials for DDT manufacture are benzene and chlorine
Description : Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching? (A) Isopropyl alcohol (B) Butyl alcohol (C) Toluene (D) Hexane
Last Answer : (B) Butyl alcohol
Description : The freon group of refrigerants are (a) halo-carbon refrigerants (b) azeotrope refrigerants (c) inorganic refrigerants (d) hydro-carbon refrigerants
Last Answer : Ans: a
Description : Which of the following is not shipped in mild steel containers? (A) Acetone (B) Ammonia (C) Ethyl alcohol (D) Formic acid
Last Answer : (D) Formic acid
Description : Dehydrogenation of Isopropanol produces (A) Propyl alcohol (B) Acetone (C) Trichloroethylene (D) Formaldehyde
Last Answer : (B) Acetone