Description : Lecithins are soluble in ordinary solvents except (A) Benzene (B) Ethyl alcohol (C) Methyl alcohol (D) Acetone
Last Answer : Answer : D
Description : A minimum boiling azeotrope is exemplified by (A) Toluene-benzene (B) Acetone-carbon disulphide (C) Water-isobutyl alcohol (D) None of these
Last Answer : (B) Acetone-carbon disulphide
Description : Benzene reacts with benzoyl chloride in the presence of anhydrous aluminium chloride to form (a) Benzyl chloride (b) Benzaldehyde (c) Benzal chloride (d) Benzophenone
Last Answer : Benzophenone
Description : Nickel made/clad equipments are suitable for handling (A) Ammonia (both aqueous & anhydrous) (B) Fruit juices, milk & its products and caustic soda solution (C) Nitric acid & hydrochloric acid (concentrated) (D) Sulphuric acid (concentrated)
Last Answer : (B) Fruit juices, milk & its products and caustic soda solution
Description : Explain why anhydrous HCl is a bad conductor electricity while aqueous HCl is a good conductor of electricity.
Last Answer : Ans: Hcl is a covalent compound and has no ion but when dissolve into solution it under go dissociation and produce ions in the solution and hence conduct electricity.
Description : For concentrating an aqueous solution of a material like anhydrous Na2SO4, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator. (A) High pressure (B) Vacuum (C) Backward feed (D) None of these
Last Answer : (B) Vacuum
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 : Acetone is produced by catalytic dehydrogenation of (A) Phenol (B) Naphthalene (C) Isopropanol (D) Ethyl benzene
Last Answer : (C) Isopropanol
Description : 1-chloromethyl-4-methyl-1, 3-cyclopentadiene is solvolysed in aqueous acetone based on the above solve the following questions. The number of enantiom
Last Answer : 1-chloromethyl-4-methyl-1, 3-cyclopentadiene is solvolysed in aqueous acetone based on the above solve the following ... A. 1 B. 2 C. 3 D. 4
Description : 2,2-Dichloropropane reacts with aqueous KOH to give (a) 2,2-Propanediol (b) Propanal (c) Acetone (d) Propene
Last Answer : Acetone
Description : Propyne reacts with aqueous H2SO4 in the presence of HgSO4 to form (a) acetone (b) 1-propanol (c) acetaldehyde (d) 2-propanol
Last Answer : acetone
Description : Which alcohol is most reactive towards `HCl` in the presence of anhydrous `ZnCl_(2)`?
Last Answer : Which alcohol is most reactive towards `HCl` in the presence of anhydrous `ZnCl_(2)`? A. primary B. secondary C. tertiary D. all of these
Description : Ethyl alcohol forms X `CaCl_(2)^(3). C_(2)H_(5)OH` when `C_(2)H_(5)OH` reacts with respective anhydrous salts. Then
Last Answer : Ethyl alcohol forms X `CaCl_(2)^(3). C_(2)H_(5)OH` when `C_(2)H_(5)OH` reacts with respective anhydrous salts. Then ... = 4` D. `X = 4, Y = 4, Z = 4`
Description : Which of the following reagents is most suitable for preparing chlorobenzene from benzene? (a) Aqueous chlorine (b) Chlorine in the presence of ultraviolet light (c) Chlorine in acetic acid (d) Chlorine in the presence of FeCl3
Last Answer : Chlorine in the presence of FeCl3
Description : The compound that on treatment with benzene sulphonyl chloride, forms a precipitate soluble in alkali, is
Last Answer : The compound that on treatment with benzene sulphonyl chloride, forms a precipitate soluble in alkali, is A. `(C_(2) ... -NH_(2)` D. `CH_(3)-CONH_(2)`
Description : Why are Grignard reagents soluble in ether but not in benzene ?
Last Answer : Ans. Grignard reagents from co-ordination complexes with ether but not benzene since the former has lone pair of electrons but the later does not.
Description : Fat soluble vitamins are (A) Soluble in alcohol (B) one or more Propene units (C) Stored in liver (D) All these
Description : A cereal protein soluble in 70% alcohol but insoluble in water or salt solution is (A) Glutelin (B) Protamine (C) Albumin (D) Gliadin
Description : (a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO. Write symbols of cation and anion present in MgO. (b) Name the solvent in which ionic compounds are generally soluble. (c) Why are aqueous solutions of ionic compounds able to conduct electricity? -Chemistry
Last Answer : (b) Ionic compounds are soluble in water. (c) It is because aqueous solutions consist of ions which can move freely in them and carry current.
Description : Why is aniline soluble in aqueous HCl?
Last Answer : Why is aniline soluble in aqueous HCl?
Description : When an organic compound is present in aqueous medium and is less soluble in any organic solvent, then it is separated by `:`
Last Answer : When an organic compound is present in aqueous medium and is less soluble in any organic ... B. distillation C. chromatography D. sublimation
Description : Acetyl salicylic acid is soluble in (a) An aqueous base (b) Water (c) An aqueous acid
Last Answer : Ans: A
Description : 1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is: (A) 0.4 (B) 0.25 (C) 0.2 (D) 0.175
Last Answer : (C) 0.2
Description : Pick out the wrong statement. (A) At constant pressure, solubility of a gas in a liquid diminishes with rise in temperature (B) Normally, the gases which are easily liquefied are more soluble ... (D) At constant pressure, solubility of a gas in a liquid increases with rise in temperature
Last Answer : (A) At constant pressure, solubility of a gas in a liquid diminishes with rise in temperature
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 : 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 : 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 : Which of the following compounds on treatment with NaHCO3 will liberate CO2? (a) Acetic acid (b) Ethylamine (c) Acetone (d) Ethyl alcohol
Last Answer : Acetic acid
Description : Which of the following compounds will react with Tollens' reagent to give metallic silver? (a) Formic acid (b) Ethyl alcohol (c) Acetic acid (d) Acetone
Last Answer : Formic acid
Description : Ethyl alcohol reacts with concentrated H2SO4 at 140°C to form (a) Acetone (b) Ethylene (c) Diethyl ether (d) Acetic acid
Last Answer : Diethyl ether
Description : Isopropyl alcohol can be converted to acetone by treatment with (a) HCl/ZnCl2 (b) Na2Cr2O7/H2SO4 (c) NaOH (d) LiAlH4
Last Answer : Na2Cr2O7/H2SO4
Description : Isopropyl alcohol reacts with acidic sodium dichromate to give (a) Acetaldehyde (b) Acetic acid (c) Propionic acid (d) Acetone
Description : Which of the following compounds will react with methylmagnesium bromide to give tert-butyl alcohol? (a) Acetyl chloride (b) Acetone (c) Isopropyl alcohol (d) Acetaldehyde
Description : Which of the following compounds will react with methylmagnesium iodide followed by acid-hydrolysis to give ethyl alcohol? (a) Ethylene (b) Acetaldehyde (c) Formaldehyde (d) Acetone
Last Answer : Formaldehyde
Description : Dehydrogenation of Isopropanol produces (A) Propyl alcohol (B) Acetone (C) Trichloroethylene (D) Formaldehyde
Last Answer : (B) Acetone
Description : Catalytic oxidation-dehydrogenation of methyl alcohol produces (A) Formaldehyde (B) Phenol (C) Acetone (D) Maleic anhydride
Last Answer : (A) Formaldehyde
Description : Bisphenol A is produced by the condensation of acetone with (A) Formaldehyde (B) Ethyl alcohol (C) Diethyl ether (D) Phenol
Last Answer : (D) Phenol
Description : The conversion of secondary alcohol to ketones in presence of aluminium isopropoxide and acetone as solvent is? a. Canizarro reaction b. Oppenauer oxidation c. Suzuki reaction d. Aldol Condensation
Last Answer : b. Oppenauer oxidation
Description : Which of the following fuel detonates readily? a) Benzene b) Iso-octane c) Normal heptane d) Alcohol
Last Answer : Answer: c Explanation: Normal heptane detonates readily.
Description : Which of the following fuel has little tendency towards detonation? a) Benzene b) Iso-octane c) Normal heptane d) Alcohol
Last Answer : Answer: b Explanation: Benzene has little tendency towards detonation.
Description : Styrene which is a monomer for the production of polystyrene, is commercially produced by the (A) Catalytic dehydrogenation of ethyl benzene (B) Dehydration of ethyl alcohol followed by hydrogenation (C) Reacting ethylene oxide with acetaldehyde (D) Fermentation of starch
Last Answer : (A) Catalytic dehydrogenation of ethyl benzene
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 : Benzene undergoes Friedel-Crafts reaction with isopropyl alcohol in the presence of H2SO4 catalyst to give (a) n-Propylbenzene (b) Benzophenone (c) Isopropylbenzene (d) Nothing happens
Last Answer : Isopropylbenzene
Description : Which of the following is a detergent? (A) Fatty alcohol (B) Alkyl benzene sulphonate (ABS) (C) Fatty acids (D) Methylene chloride
Last Answer : (B) Alkyl benzene sulphonate (ABS)
Description : 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 ... through the respiratory system are called fumigants (D) Benzene hexachloride is not a contact insecticide
Last Answer : (D) Benzene hexachloride is not a contact insecticide
Description : __________ is produced by the dehydrogenation of ethyl benzene. (A) Styrene (B) Ethyl alcohol (C) Cumene (D) Phenol
Last Answer : (A) Styrene