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.

1 Answer

Answer :

can be oxidized with KMnO4 to give benzoic acid

Related questions

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 : Aniline is prepared by (a) the reaction of benzene with ammonia (b) the reduction of nitrobenzene with Sn/HCl (c) the dehydrogenation of nitrobenzene (d) the reaction of nitrobenzene with I2/NaOH

Last Answer : the reduction of nitrobenzene with Sn/HCl

Description : Which of the following compounds undergoes nitration most readily? (a) Benzene (b) Toluene (c) Nitrobenzene (d) Benzoic acid

Last Answer : Toluene

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

Last Answer : Toluene

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

Description : Which of the following statements is false about aniline? (a) It is a primary aromatic amine. (b) It is a weak base which forms salts with acids. (c) It liberates nitrogen on treatment with ice-cold nitrous acid. (d) It can be prepared by the reduction of nitrobenzene with tin and HCl

Last Answer : It liberates nitrogen on treatment with ice-cold nitrous acid

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

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

Description : Which of the following statements is false about benzylamine? (a) can be prepared by reduction of benzonitrile with LiAlH4. (b) cannot be prepared by reduction of benzamide with LiAlH4. (c) reacts with nitrous acid to give benzyl alcohol. (d) reacts with KMnO4 to give benzoic acid.

Last Answer : cannot be prepared by reduction of benzamide with LiAlH

Description : Trinitrotoluene (TNT), an explosive, is made by the nitration of (A) Nitrobenzene (B) Toluene (C) Nitrotoluene (D) Benzene

Last Answer : (B) Toluene

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 statements about the reaction given below are correct? MnO2 + 4HCI → MnCl2 +2H20 + Cl2 (i) HCl is oxidized to Cl2 (ii) MnO2 is reduced to MnCl2 (iii) MnCl2 acts as an oxidizing agent (iv) HCl acts ... b) (i), (ii) and (iii) (c) (i) and (ii) only (d) (iii) and (iv) only

Last Answer : Answer: . (c)

Description : Benzoic acid and diphenyl ketone are both solids insoluble in water. A mixture of these compounds can be separated if we (a) add the mixture to a solution of NaOH in water, and filter. (b) add ... benzene. (d) It is impossible to separate a mixture of two solids when both are insoluble in water.

Last Answer : add the mixture to a solution of NaOH in water, and filter

Description : Naphthalene undergoes nitration with HNO3/H2SO4 at 60°C to give mainly (a) 1-Nitronaphthalene (b) 1,2-Dinitronaphthalene (c) 2-Nitronaphthalene (d) 1,5-Dinitronaphthalene

Last Answer : 1-Nitronaphthalene

Description : When aniline is heated with glycerol in the presence of sulfuric acid and nitrobenzene, it gives quinoline. This reaction in called (a) Fischer synthesis (b) Skraup synthesis (c) Diazotization (d) Corey-House synthesis

Last Answer : Skraup synthesis

Description : Which of the following will undergo substitution in the ortho and para positions rather than in the meta position? (a) Nitrobenzene (b) Benzoic acid (c) Acetanilide (d) Benzaldehyde

Last Answer : Acetanilide

Description : Which of the following agents is used in order to make benzene react with concentrated nitric acid to give nitrobenzene? (a) Concentrated H2SO4 (b) FeCl3 catalyst (c) Lindlar's catalyst (d) Ultraviolet light

Last Answer : Concentrated H2SO4

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 : Nitrobenzene undergoes reduction with zinc and KOH to give (a) Aniline (b) Hydrazobenzene (c) Azobenzene (d) None of these

Last Answer : Hydrazobenzene

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 : Although — NH2 gp is an ortho and para directing gp, nitration of aniline gives along with ortho and para, meta derivatives also.

Last Answer : Nitration is carried out with a mixture of Conc. NO3 + Conc. H2 SO4 (nitrating mix). In the presence of these acids, most of aniline gets protonated to form anilinium ion. Therefore, in the ... is m-directing and deactivating hence a mixture of all three-ortho, para and meta derivatives is formed.

Description : Which of the following give aniline by reduction of nitrobenzene?

Last Answer : Which of the following give aniline by reduction of nitrobenzene? A. `H_(2)//Pd-C` B. `Sn+HCI` C. `Cu+HCI` D. `(NH_(4))_(2)S`

Description : Benzene reacts with concentrated HNO3 in the presence of concentrated H2SO4 to give nitrobenzene. This reaction is an example of (a) Electrophilic addition (b) Nucleophilic addition (c) Electrophilic substitution (d) Nucleophilic substitution

Last Answer : Electrophilic substitution

Description : Benzene reacts with concentrated HNO3 in the presence of concentrated H2SO4 to give nitrobenzene. This reaction is an example of (a) Electrophilic addition (b) Nucleophilic addition (c) Electrophilic substitution (d) Nucleophilic substitution

Last Answer : Electrophilic substitution

Description : Reduction of p-nitrotoluene with Sn + HCl gives : (a) p-methylaniline (b) Toluene (c) m-methylaniline (d) N-Methylaniline

Last Answer : p-methylaniline

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 : Toluene is nitrated and the resulting product is reduct is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then with

Last Answer : Toluene is nitrated and the resulting product is reduct is reduced with tin and hydrochloric acid ... D. mixture of o-and p-bromotoulenes

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 : Which of the following compounds is most readily sulfonated? (a) Benzene (b) Chlorobenzene (c) Toluene (d) Nitrobenzene

Last Answer : Toluene

Description : Benzenediazonium chloride reacts with hypophosphorus acid to form : (a) Phenol (b) Benzaldehyde (c) Aniline (d) Benzene

Last Answer : Benzene

Description : Phenol on distillation with Zinc dust gives (a) Phenylzinc (b) Benzene (c) Cyclohexanone (d) Benzoic acid

Last Answer : Benzene

Description : Baeyer's reagent is (a) dilute KMnO4 (b) HCl + ZnCl2 (c) Br2 in CCl4 (d) NH2NH2

Last Answer : dilute KMnO4

Description : When ethanol is treated with sodium metal : (a) Sodium ethoxide is formed (b) The sodium is oxidized (c) The acidic hydrogen in reduced (d) All these occu

Last Answer : All these occu

Description : Benzenediazonium chloride reacts with warm water to give (a) Aniline (b) Phenol (c) Benzene (d) Chlorobenzene

Last Answer : Phenol

Description : Benzamide reacts with Br2 and KOH to give (a) Benzene (b) Benzylamine (c) Aniline (d) Benzonitrile

Last Answer : Benzylamine

Description : In the nitration of benzene with a mixture of conc. `HNO_(3)` and conc. `H_(2)SO_(4)`, the active species involved is :

Last Answer : In the nitration of benzene with a mixture of conc. `HNO_(3)` and conc. `H_(2)SO_(4)`, ... ion B. nitrate ion C. nitronium ion D. nitrogen dioxide

Description : Nitration of benzene is:

Last Answer : Nitration of benzene is: A. nucleophilic substitution B. nucleophilic addition C. electrophilic substitution D. free radical substitution

Description : In the following compounds, anisole (I), benzene (II) and nitrobenzene (III), the ease of reaction with electrophiles is:

Last Answer : In the following compounds, anisole (I), benzene (II) and nitrobenzene (III), the ease of reaction ... . `IIIgtIIgtI` C. `IIgtIgtIII` D. `IgtIIgtIII`

Description : In the conversion of wine to vinegar (a) Ethanol is oxidized to acetic acid (b) Ethanol is reduced to acetic acid (c) Methanol is oxidized to acetic acid (d) Methanol is reduced to acetic acid

Last Answer : Ethanol is oxidized to acetic acid

Description : Howmany of the following compounds are dissolve in aqeous solution of `NaOH` (1) Phenol (2) p-cresol (3) Benzoic acid (4) Benzene sulphonic acid (5) A

Last Answer : Howmany of the following compounds are dissolve in aqeous solution of `NaOH` (1) Phenol (2) p-cresol ... P-toluedine (7) Picric acid (8) Squaric acid

Description : Dehydrogenation of ethyl benzene produces (A) Styrene (B) Naphthalene (C) Phenol (D) Benzoic acid

Last Answer : (A) Styrene

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 : Chemical name of Gammaxane is (1) Toluene (2) Chloro benzene (3) Aniline (4) Benzene hexachloride

Last Answer : Benzene hexachloride

Description : Which of the following reagents is used to prepare benzenediazonium chloride from aniline? (a) NaNO2 + HCl (b) LiAlH4 (c) NH2NH2 + KOH (d) NaOH

Last Answer : NaNO2 + HCl

Description : Indicate which of the statement is incorrect (a) The detritus tank is type of a grit chamber (b) In detritus tank, velocity of flow is further reduced (c) Grit chambers are provided in the sewage ... to remove the heavier inorganic matter as grit, sand etc. from the sewage (d) None of them*

Last Answer : (d) None of them*

Description : Which of the following statements about the given reaction are correct? 3Fe(s) + 4H2O(g) → Fe3O4 (s) + 4H2 (g) (a) Iron metal is getting oxidized. (b) Water is getting reduced. (c) Water is acting as reducing agent. (d)Water is acting as ... (B) & (C) B) (C) & (D) C) (A), (B) & (D) D) (B) & (D)

Last Answer : C) (A), (B) & (D)

Description : `Ph-NO_(2) overset(Sn//HCl)rarr underset("HCl, " 0^(@)C-5^(@)C)overset(NaNO_(2))rarr underset(Ph-OH)overset("Basic medium")rarr "Product Y"` Find the

Last Answer : `Ph-NO_(2) overset(Sn//HCl)rarr underset("HCl, " 0^(@)C-5^(@)C)overset(NaNO_(2) ... report your answer as `underset(2)overset("Molecular weight")rarr`

Description : How many N atom are present in final product `overset(Sn//HCl)rarr overset(NaNO_(2)//HCl)rarr overset(H_(3)PO_(2))rarr` Final product.

Last Answer : How many N atom are present in final product `overset(Sn//HCl)rarr overset(NaNO_(2)//HCl)rarr overset(H_(3)PO_(2))rarr` Final product.

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 reaction sequence would be best to prepare 3-chloro-aniline form benzene

Last Answer : Which reaction sequence would be best to prepare 3-chloro-aniline form benzene A. ... . nitration, reduction, acetylation, chlorination, hydrolysis