Description : Phenol reacts with excess bromine water to give (a) o- plus p-Bromophenol (b) Bromobenzene (c) 2,4,6-Tribromophenol (d) m-Bromophenol
Last Answer : 2,4,6-Tribromophenol
Description : Which of the following will give a precipitate with excess bromine water? (a) Bromobenzene (b) Aniline (c) Nitrobenzene (d) Toluene
Last Answer : Aniline
Description : p-bromoaniline is prepared from aniline via
Last Answer : p-bromoaniline is prepared from aniline via A. direct bromination of aniline in presence of Lewis ... in presence of light D. amination of bromine
Description : Bromobenzene can be prepared by treating aniline with (a) Conc HBr (b) Br2/FeBr3 (b) CuBr (d) Nitrous acid then CuBr
Last Answer : Nitrous acid then CuBr
Description : Aniline reacts with acetic anhydride to give : (a) N-Methylaniline (b) p-Aminoacetophenone (c) Acetanilide (d) m-Aminoacetophenone
Last Answer : Acetanilide
Description : Which of the following agents is used in order to make benzene react with bromine to give bromobenzene? (a) Ultraviolet light (b) Fe catalyst (c) Nickel catalyst (d) Al2O3 catalyst
Last Answer : Fe catalyst
Description : Benzenediazonium chloride reacts with KI to form : (a) Benzenediazonium iodide (b) m-Diiodobenzene (c) Iodobenzene (d) o- plus p-Diiodobenzene
Last Answer : Iodobenzene
Description : Toluene reacts with bromine in the presence of uv light to give (a) m-Bromotoluene (b) Benzyl bromide (c) o-Bromotoluene (d) Benzoyl bromide
Last Answer : Benzyl bromide
Description : Toluene reacts with chlorine in the presence of AlCl3 to give (a) o-Chlorotoluene (b) o- plus p-Chlorotoluene (c) m-Chlorotoluene (d) o- plus m-Chlorotoluene
Last Answer : o- plus p-Chlorotoluene
Description : Phenylmagnesium bromide reacts with CO2 followed by acid-hydrolysis to form : (a) Phenol (b) Benzoic acid (c) Bromobenzene (d) Acetophenone
Last Answer : Benzoic acid
Description : Which of the following compounds reacts least rapidly in electrophilic substitution reactions? (a) Nitrobenzene (b) Phenol (c) Bromobenzene (d) Toluene
Last Answer : Nitrobenzene
Description : How can tri substitution of Bromine be prevented in aniline ? OR How can we prepare mono bromo aniline ?
Last Answer : Because of high reactivity of aromatic amines substitution tends to occur at o- and ppositions. Monosubstituted aniline can be prepared by protecting — NH2 group by acetylation with acetic anhydride, then carrying out substitution followed by hydrolysis of substituted amide.
Description : Aniline reacts with mixed acid (conc. `HNO_(3)` and conc. `H_(2)SO_(4)`) at 288 K to give P (51%), Q (47%) and R(2%). The major product (s) of the fol
Last Answer : Aniline reacts with mixed acid (conc. `HNO_(3)` and conc. `H_(2)SO_(4)`) at 288 K to give P ... of the following reaction sequence is (are) B. C. D.
Description : Acetophenone reacts with Br2 in the presence of FeCl3 to form : (a) m-Bromoacetophenone (b) m-Dibromobenzene (c) o- + p-Bromoacetophenone (d) p-Dibromobenzene
Last Answer : m-Bromoacetophenone
Description : Benzenediazonium chloride reacts with hypophosphorus acid to form : (a) Phenol (b) Benzaldehyde (c) Aniline (d) Benzene
Last Answer : Benzene
Description : Benzenediazonium chloride reacts with warm water to give (a) Aniline (b) Phenol (c) Benzene (d) Chlorobenzene
Last Answer : Phenol
Description : Benzaldehyde reacts with a mixture of concentrated sulfuric acid and nitric acid to give (a) p-Nitrobenzaldehyde (b) o-Nitrobenzaldehyde (c) p-Nitrobenzoic acid (d) m-Nitrobenzaldehyde
Last Answer : m-Nitrobenzaldehyde
Description : Aniline reacts with nitrous acid at low temperatures to give (a) a N-nitrosoamine (b) a nitrile (c) a diazonium salt (d) a nitrite salt
Last Answer : a diazonium salt
Description : Benzamide reacts with Br2 and KOH to give (a) Benzene (b) Benzylamine (c) Aniline (d) Benzonitrile
Last Answer : Benzylamine
Description : When aniline is heated with chloroform and alcoholic KOH, the product is (a) Benzonitrile (b) p-Chloroaniline (c) Phenylisocyanide (d) m-Chloroaniline
Last Answer : Phenylisocyanide
Description : A compound, C4H6, reacts with bromine and forms a white precipitate with ammoniacal silver nitrate solution. It reacts with dilute H2SO4 in the presence of mercuric sulfate to form 2-butanone. The compound could be (a) 1-Butyne (b) 1-Butene (c) 2-Butyne (d) 2-Butene
Last Answer : 1-Butyne
Description : Propene reacts with bromine to form 1,2-dibromopropane. This is an example of (a) Nucleophilic addition (b) Electrophilic addition (c) Nucleophilic substitution (d) Electrophilic substitution
Last Answer : Electrophilic addition
Description : 1,3-Butadiene reacts with bromine to mainly give (a) 3,4-Dibromo-1-butene (b) 4-Bromo-1-butene (c) 1,4-Dibromo-2-butene (d) 1-Bromo-2-butene
Last Answer : 1,4-Dibromo-2-butene
Description : Compound (A) when reacted with PCl5 and then with ammonia gave (B). Compound (B) when treated with bromine and NaOH, produced (C). Compound (C) on treatment with NaNO2/HCl at 0°C and then boiling with H2O ... Compound (A) is (a) o-Toluic acid (b) o-Chlorotoluene (c) m-Toluic acid (d) o-Bromotoluene
Last Answer : o-Toluic acid
Description : Which of the following statements is correct about aniline? (a) is weak acid. (b) diazotizes to benzenediazonium chloride when treated with ice-cold nitrous acid. (c) can be nitrated with ... p-nitroaniline. (d) gives an intense green color with a suspension of bleaching powder in water
Last Answer : diazotizes to benzenediazonium chloride when treated with ice-cold nitrous acid.
Description : Which of the following compounds will not give a white precipitate with alcoholic AgNO3. (a) Bromobenzene (b) 1-Bromopropane (c) Ethyl bromide (d) 2-Bromopropane
Last Answer : Bromobenzene
Description : One mole of ohenol reacts with bromine to from tribromophenol. How much bromine is used?
Last Answer : One mole of ohenol reacts with bromine to from tribromophenol. How much bromine is used? A. 3.0 mole B. 1.5 mole C. 4.5 mole D. 6.0 mole
Description : Phenol reacts with bromine in carbon disulphide at low temperature to give
Last Answer : Phenol reacts with bromine in carbon disulphide at low temperature to give A. m-bromophenol B. o-and p ... C. p-bromophenol D. 2, 4,6-tribromophenol
Description : A white solid reacts with dilute HCI to give colourless gas that de-colourises aqueous bromine. The solid is likely to be.
Last Answer : A white solid reacts with dilute HCI to give colourless gas that de-colourises aqueous bromine. ... chloride C. Sodium acetate D. Sodium thiosulphate
Description : `S_(1):(HPO_(3))_(n)` can be prepared by heating phosphorous acid and bromine in a sealed tube. `S_(2)` : dry iodine reacts with ozone and formed yell
Last Answer : `S_(1):(HPO_(3))_(n)` can be prepared by heating phosphorous acid and bromine in a sealed tube. `S_(2)` : ... below 369 K. A. FTF B. TTF C. TTT D. TFF
Description : What is the chemical equation for hydrogen iodide gas reacts with bromine gas?
Last Answer : The chemical reaction is:2 HI + Br2 = 2 HBr + I2
Description : Nitrobenzene reacts with Br2 in the presence of FeCl3 to give (a) o-chloronitrobenzene (b) o-bromonitrobenzene (c) m-chloronitrobenzene (d) m-bromonitrobenzene
Last Answer : m-bromonitrobenzene
Description : Which of the following compounds is most basic? (a) Aniline (b) Benzylamine (c) Acetanilide (d) p-nitroaniline
Description : Aniline undergoes oxidation with Na2Cr2O7/H2SO4 to give (a) Schiff's base (b) p-Benzoquinone (c) Phenol (d) Benzoic acid
Last Answer : p-Benzoquinone
Description : Diesel index (an alternative index for expressing the quality of diesel) is (A) Determined by using a test engine (B) Not related to aniline point (C) Equal to cetane number plus 3 (D) All (A), (B) & (C)
Last Answer : (C) Equal to cetane number plus 3
Description : Which of the following statements is False/Incorrect about nitrobenzene? (a) is formed by nitration of benzene at temperatures below 60°C. (b) can be further nitrated to give m-dinitrobenzene. (c) can be oxidized with KMnO4 to give benzoic acid. (d) can be reduced with Sn/HCl to give aniline.
Last Answer : can be oxidized with KMnO4 to give benzoic acid
Description : The most appropriate reaction for the conversion of bromobenzene to benzoic acid is
Last Answer : The most appropriate reaction for the conversion of bromobenzene to benzoic acid is A. Reimer- ... C. Claisen rearrangement D. Friedel-Crafts reaction
Description : How would you synthesise 4-methoxyphenol from bromobenzene in not more than five steps? State clearly the reagents used in each step and show the stru
Last Answer : How would you synthesise 4-methoxyphenol from bromobenzene in not more than five steps? ... the intermediate compounds in your synthetic scheme.
Description : Cresols on distillation with zinc dust gives (a) o-Xylene (b) Benzene (c) o- plus p-Xylene (d) Toluene
Last Answer : Toluene
Description : In the redox reaction, `2MnO_(4)^(-)+5C_(2)O_(4)^(2-)+16H^(+) to 2Mn^(2+)+10CO_(2)+8H_(2)O` 20mL of 0.1 M `KMnO_(4)` reacts quantitatively with :
Last Answer : In the redox reaction, `2MnO_(4)^(-)+5C_(2)O_(4)^(2-)+16H^(+) to 2Mn^(2+)+10CO_(2)+8H_(2)O` 20mL ... 50 mL of 0.25 M oxalate D. 50 mL of 0.1 M oxalate
Description : One mole of aniline warmed with the mixture of `NaNO_(2)+HCl`. If we assume 100% yield, volume of `N_(2)` gas liberated at S.T.P is
Last Answer : One mole of aniline warmed with the mixture of `NaNO_(2)+HCl`. If we assume 100% yield, volume of `N_(2)` gas ... 4 L` C. `33.6 L` D. `44.8 L`
Description : What is aluminum bromide plus chlorine yields aluminum chloride and bromine?
Last Answer : The chemical equation is:2 AlBr3 + 3 Cl2 = 2 AlCl3 + 3 Br2
Description : Benzenediazonium chloride reacts with phenol to form : (a) p-chlorophenol (b) Chlorobenzene (c) p-Hydroxyazobenzene (d) DDT
Last Answer : p-Hydroxyazobenzene
Description : Which of the following produces H2 gas, when reacts with acid? (1) Zn (2) S (3) C (4) O
Last Answer : (1) Zn Explanation: As, Zinc is a metal so it will produce H2 gas when reacts with acid. Active metals react with acids to produce hydrogen because they are above hydrogen in the activity series.
Description : Which is the best description of the behaviour of bromine in the reaction given below `H_(2)O+Br_(2) rarr HOBr+HBr`
Last Answer : Which is the best description of the behaviour of bromine in the reaction given below `H_(2)O+ ... . Oxidized C. Reduced only D. Proton acceptor only
Description : A `C_(6)H_(12)O` compound does not react with `Br_(2)` in `C Cl_(4)`, produces a flammable gas on treatment with `LiAlH_(4)`, and reacts with `H_(2)Cr
Last Answer : A `C_(6)H_(12)O` compound does not react with `Br_(2)` in `C Cl_(4)`, ... B. methoxycyclopentane C. 2-cyclopropyl-2-propanol D. 2-cyclobutylethanol
Description : A compound X of the formula `C_(2)H_(6)O` on reaction with Na metal gave Y, X also reacts with `PC1_(5)` to give Z the product obtained in the reactio
Last Answer : A compound X of the formula `C_(2)H_(6)O` on reaction with Na metal gave Y, X also reacts with `PC1_(5)` to ... )H_(5)` D. `C_(2)H_(5)OC_(2)H_(5)`
Description : Which of the following is least soluble in water? (a) Methylamine (b) Trimethylamine (c) Dimethylamine (d) Aniline
Last Answer : Methylamine
Description : Carboxylic acid reacts with halogen in presence of red P to gives__________ a) α-halogen acids b) β-halogen acid c) Acid halide d) Dicarboxylic acid
Last Answer : a) α-halogen acids
Description : Nitration of nitrobenzene with HNO3/H2SO4 gives : (a) m-dinitrobenzene (b) o-dinitrobenzene (c) p-dinitrobenzene (d) m-nitrobenzenesulfonic acid
Last Answer : m-dinitrobenzene