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 reacts with acetic anhydride to give : (a) N-Methylaniline (b) p-Aminoacetophenone (c) Acetanilide (d) m-Aminoacetophenone
Last Answer : Acetanilide
Description : p-Nitrotoluene on treatment with chlorine in the presence of FeCl3 gives (a) m-Chlorotoluene (b) 2-Chloro-4-nitrotoluene (c) p-Chlorotoluene (d) 2-Nitro-4-chlorotoluene
Last Answer : 2-Chloro-4-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 : 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 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 : How many toluidines on reaction with `NaNO_(2)//HCl` followed by `H_(3)PO_(2)` treatment gives Toluene.
Last Answer : How many toluidines on reaction with `NaNO_(2)//HCl` followed by `H_(3)PO_(2)` treatment gives Toluene.
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 : Cresols on distillation with zinc dust gives (a) o-Xylene (b) Benzene (c) o- plus p-Xylene (d) Toluene
Last Answer : Toluene
Description : Resorcinol on distillation with zinc dust gives (a) Benzene (b) Cyclohexane (c) Toluene (d) m-Xylene
Last Answer : Benzene
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 : `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 : 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 : Complete reduction of benzene-diazonium chloride with Zn/HCl gives :
Last Answer : Complete reduction of benzene-diazonium chloride with Zn/HCl gives : A. Aniline B. Phenylhydrazine C. Azobenzene D. Hydrazobenzene
Description : Among the following, the number of elements showing only one non-zero oxidation state is: O,Cl,F,N,P,Sn,Tl,Na,Ti
Last Answer : Among the following, the number of elements showing only one non-zero oxidation state is: O,Cl,F,N,P,Sn,Tl,Na,Ti
Description : Oxidation of toluene with chromyl chloride gives benzaldehyde. This reaction is known as (a) Perkin reaction (b) Benzoin condensation (c) Etard's reaction (d) Ozonolysis
Last Answer : Etard's reaction
Description : When acetylene is passed through hot iron tube at 400°C, it gives (a) Benzene (b) Toluene (c) o-Xylene (d) Mesitylene
Description : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca
Last Answer : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca
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
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 : A compound undergoes reduction with LiAlH4. It also dissolves in aqueous NaOH from which it can be recovered by addition of HCl. The compound is (a) a carboxylic acid (b) an ester (c) an acid anhydride (d) an alcohol
Last Answer : a carboxylic acid
Description : Acetone undergoes reduction with zinc amalgam in HCl to form propane. This reaction is known as (a) Clemmensen reduction (b) Wolf-Kishner reduction (c) Rosenmund reduction (d) Aldol condensation
Last Answer : Clemmensen reduction
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 : 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 : Addition of HCl to 3-methyl-1-pentene gives two products. One of these is 2-chloro-3-methylpentane. What is the other product? (a) 1-Chloro-3-methylpentane (b) 3-Chloro-3-methylpentane (c) 3-Chloro-2-methylpentane (d) 2-Chloro-2-methylpentane
Last Answer : 3-Chloro-3-methylpentane
Description : Addition of two moles of HCl to propyne gives : (a) 2,2-Dichloropropane (b) 1,3-Dichloropropane (c) 1,2-Dichloropropane (d) None of these
Last Answer : 2,2-Dichloropropane
Description : It requires 40mL of 1 M `Ce^(4+)` to titrate 20mL of 1 M `Sn^(2+) " to "Sn^(4+)` . What is the oxidation state of the cerium in the product?
Last Answer : It requires 40mL of 1 M `Ce^(4+)` to titrate 20mL of 1 M `Sn^(2+) " to "Sn^(4+)` . What is the oxidation state of the cerium in the product?
Description : Toluene o/p orienting with respect to an electrophilic substitution reaction due to
Last Answer : Toluene o/p orienting with respect to an electrophilic substitution reaction due to A. `+I` effect of the ... ring D. `+M` effect to the methyl group.
Description : A solution contains 1g mol. Each of p-toluene diazonium chloride and p-nitrophenyl diazonium cholride. To this 1g mol.of alkaline solution of phenol i
Last Answer : A solution contains 1g mol. Each of p-toluene diazonium chloride and p-nitrophenyl diazonium ... Predict the major product. Explain your answer.
Description : Toluene when treated with `Br_(2)//Fe,` give p-bromotoluene as the major product because of the `-CH_(3)` group:
Last Answer : Toluene when treated with `Br_(2)//Fe,` give p-bromotoluene as the major product because ... is m-directing D. activates the ring by hyperconjugation
Last Answer : Tin ( Sn) Latin name Stannum .
Description : Brass is an alloy of : (1) Cu, Al and Zn (2) Cu and Sn (3) Cu and Zn (4) Al and Mg
Last Answer : (3) Cu and Zn Explanation: Brass is an alloy made of copper and zinc. The proportions of zinc and copper can be varied to cre-ate a range of brasses with varying properties. By comparison, bronze is principally an alloy of copper and tin.
Description : The chemical symbol for antimony is: w) An x) Sn y) Sb z) At
Last Answer : ANSWER: Y -- Sb
Description : What is the element represented by the symbol Sn?
Last Answer : ANSWER: TIN
Last Answer : Cu and Zn
Description : Which of the following pairs of compounds could NOT be used to create a buffer solution? Would it be: w) HCL and NaCl (read: H - C - L and N - A - C - L) x) HCN and NaCN (read: H - C - N and N - A - C - N) y) NH3 ... - H - 4 - C - L) z) HNO2 and NaNO2 (read: H - N - O -2 and N - A - N - O - 2)
Last Answer : ANSWER: W -- HCL AND NaCl (read: H - C - L and N - A - C - L)
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 : Amongst the compounds gives, the one that would form a brilliant colored dye on treatment with `NaNO_2` in dil. `HCl` followed by addition to an alkal
Last Answer : Amongst the compounds gives, the one that would form a brilliant colored dye on treatment with `NaNO_2` in dil. ... of `beta-`naphthol is A. B. C. D.
Description : (B) on treatment with `Zn//HCl` gives :
Last Answer : (B) on treatment with `Zn//HCl` gives : A. aniline B. benzylamine C. phenylisocyanide D. N-methylaniline
Description : A salt solution of `Cd^(2+)` in dilute HCl, on treatment with a solution of `BaCl_(2)` gives a white precipitate, which is insoluble in concentrated `
Last Answer : A salt solution of `Cd^(2+)` in dilute HCl, on treatment with a solution of `BaCl_(2)` gives a white precipitate, ... C. `NO_(2)^(-)` D. `S^(2-)`
Description : Which of the following is true when HCL is passed through water. (i) It does not ionize in the solution as it is a covalent compound (ii) It ionizes in the solution (iii) It gives both hydrogen and hydroxyl ions in the solution ... ) (i) only (b) (iii) only (c) (ii) and (iv) only (d) (iii) and (iv)
Last Answer : (c) (ii) and (iv) only
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 : 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 : Saccharin is made up of – (1) Toluene (2) Phenol (3) Propane (4) Butane
Last Answer : (1) Toluene Explanation: Saccharin can be produced in various ways. The original route by Remsen & Fahlberg starts with toluene. Saccharin ism artificial sweetener. The basic substance, benzoic sulfiloine ... It is used to sweeten products such as drinks, candies, cookies, medicines, and toothpaste.
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 : Which of the following compounds reacts least rapidly in electrophilic substitution reactions? (a) Nitrobenzene (b) Phenol (c) Bromobenzene (d) Toluene
Last Answer : Nitrobenzene
Description : Which of the following compounds is most readily sulfonated? (a) Benzene (b) Chlorobenzene (c) Toluene (d) Nitrobenzene