Description : Toluene undergoes oxidation to give (a) Benzyl alcohol (b) Quinone (c) Benzaldehyde (d) Benzoic acid
Last Answer : Benzoic acid
Description : When benzaldehyde is heated with concentrated NaOH, it gives : (a) Benzyl alcohol (b) Sodium benzoate (c) Benzoic acid (d) Benzyl alcohol + Sodium benzoate
Last Answer : Benzyl alcohol + Sodium benzoate
Description : Hydrolysis of benzotrichloride gives (a) Benzophenone (b) Benzoic acid (c) Benzyl alcohol (d) Phenol
Description : Hydrolysis of benzal chloride gives (a) Phenol (b) Benzaldehyde (c) Benzyl alcohol (d) Benzoyl chloride
Last Answer : (d) Benzoyl chloride
Description : Naphthalene undergoes oxidation with Na2Cr2O7 / H2SO4 to form (a) Phthalic acid (b) Phenylacetic acid (c) Tetralin (d) Benzoic acid
Last Answer : Phthalic acid
Description : Methyl benzoate on hydrolysis gives (a) Acetic acid (b) Benzoic acid (c) Picric acid (d) Phenylacetic acid
Description : Benzoyl chloride reacts with hydrogen in the presence of palladium and barium sulfate to give : (a) Benzyl alcohol (b) Benzaldehyde (c) Cinnamic acid (d) Benzophenone
Last Answer : Benzaldehyde
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 : Phenylmagnesium bromide reacts with acetaldehyde to form an addition product which undergoes acid-hydrolysis to give (a) Diphenylcarbinol (b) Benzyl alcohol (c) Methylphenylcarbinol (d) Benzoic acid
Last Answer : Methylphenylcarbinol
Description : Oxidation of a secondary alcohol with K2Cr2O7/H+ produces (a) a carboxylic acid (b) a ketone (c) an aldehyde (d) an ester
Last Answer : a ketone
Description : Which of the following does not give benzoic acid on hydrolysis? (1) phenyl cyanide (2) benzoyl chloride (3) benzyl chloride (4) methyl benzoate
Last Answer : (3) benzyl chloride Explanation: Hydrolysis is any chemical reaction in which a molecule of water ruptures one or more chemical bonds.
Description : Which of the following compounds will give an iodoform test? (a) Benzoic acid (b) Ethanol (c) Benzyl chloride (d) Methanol
Last Answer : Ethanol
Description : Cumene is the starting material for the production of (A) Benzoic acid (B) Phenol and acetone (C) Isoprene (D) Styrene
Last Answer : (B) Phenol and acetone
Description : Benzaldehyde reacts with acetic anhydride in the presence of sodium acetate at 180°C to give : (a) Mandelic acid (b) Cinnamic acid (c) Malonic acid (d) Benzoic acid
Last Answer : Cinnamic acid
Description : Which of the following will undergo Aldol condensation? (a) Acetone (b) Benzaldehyde (c) Benzoic acid (c) Benzophenone
Last Answer : Acetone
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 : 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 : 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 : 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 : Which of the statements is not true? (1) K2Cr2O7 solution becomes yellow on increasing the pH beyond 7 (2) On passing H2 S through acidified K2Cr2O7 solution, a milky colour is observed (3) Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis (4) K2Cr2O7 solution in acidic medium is orange
Last Answer : Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
Description : Anthracene undergoes oxidation with O2/V2O5 at 500°C to give (a) Benzoic acid (b) Anthraquinone (c) Phthalic acid (d) Benzophenone
Last Answer : Anthraquinone
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 : Benzene reacts with acetic anhydride in the presence of AlCl3 to form (a) Acetophenone (b) Benzophenone (c) Phenylacetic acid (d) Phenyl acetate
Last Answer : Acetophenone
Description : An organic compound (A), C3H8O, on oxidation gives (B), C3H6O. The compound (B) could be (a) a carbonyl compound (b) an alcohol (c) a carboxylic acid (d) an ether
Last Answer : a carbonyl compound
Description : Cumene (isopropyl benzene) is made by (A) Oxidation of naphthalene (B) Propylene alkylation of benzene (C) Polymerisation of a mixture of benzene & propylene (D) None of these
Last Answer : (B) Propylene alkylation of benzene
Description : Aspirin is produced by heating salicylic acid with (a) acetic anhydride in the presence of phosphoric acid (b) benzoic anhydride in the presence of phosphoric acid (c) methyl alcohol in the presence of sulfuric acid (d) phenol in the presence of sulfuric acid
Last Answer : acetic anhydride in the presence of phosphoric acid
Description : __________ is produced by the dehydrogenation of ethyl benzene. (A) Styrene (B) Ethyl alcohol (C) Cumene (D) Phenol
Last Answer : (A) Styrene
Description : Which of the following is an organometallic compound? (A) Isopropyl alcohol (B) Tetra-ethyl lead (C) Zeolite (D) Cumene
Last Answer : (B) Tetra-ethyl lead
Description : Benzoyl chloride on basic-hydrolysis (NaOH/H2O) gives : (a) Benzoic acid (b) Methyl benzoate (c) Sodium benzoate (d) Ethyl benzoate
Last Answer : Sodium benzoate
Description : Phenol on distillation with Zinc dust gives (a) Phenylzinc (b) Benzene (c) Cyclohexanone (d) Benzoic acid
Last Answer : Benzene
Description : Sodium benzoate on heating with soda-lime gives : (a) Sodium phenoxide (b) Benzene (c) Benzaldehyde (d) Benzophenone
Description : Amount of phenylacetic acid excreted in the urine in phenylketonuria is (A) 100–200 mg/dL (B) 200–280 mg/dL (C) 290–550 mg/dL (D) 600–750 mg/dL
Last Answer : Answer : C
Description : How many of the following compounds would give turbidity with lucas reagent without heating (1) Benzyl alcohol (2) Allyl alcohol (3) Cyclohexanol (4)
Last Answer : How many of the following compounds would give turbidity with lucas reagent without heating (1) ... methyl carbionol (9) P-Nitro benzyl alcohol
Description : Higher alcohol present in waxes is (A) Benzyl (B) Methyl (C) Ethyl (D) Cetyl
Last Answer : Answer : D
Description : An organic compound (A), C3H8O, on oxidation gives (B), C3H6O. The compound (A) could be (a) an aldehyde (b) a ketone (c) an alcohol (d) an ester
Last Answer : an alcohol
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 : Ethylene glycol undergoes oxidation with hot acidic KMnO4 to form : (a) Formic acid (b) Formaldehyde (c) Acetic acid (d) Acetaldehyde
Last Answer : Formic acid
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 esters produces butyric acid and phenol on hydrolysis? (a) Phenyl butyrate (b) Butyl benzoate (c) Benzyl propionate (d) Phenyl propionate
Last Answer : Phenyl butyrate
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 : Benzenediazonium chloride reacts with hypophosphorus acid to form : (a) Phenol (b) Benzaldehyde (c) Aniline (d) Benzene
Description : Keto-enol tautomerism is shown by (a) Benzaldehyde (b) Acetone (c) Benzophenone (d) Acetic acid
Description : Why is K2Cr2O7 generally preferred over Na2Cr2O7 in a volumetric analysis .Give reason .
Last Answer : Ans : It is because Na2Cr2O7 is hygroscopic in nature that is why it absorbs moisture from atmosphere , therefore its standard solution can not be prepared .
Description : Which of the following reagents can be used to oxidize 1° alcohols to aldehydes? (a) KMnO4 (b) MnO2 (c) K2Cr2O7 (d) PCC
Last Answer : PCC
Description : Collin’s Reagent is? a. K2Cr2O7/H2SO4 b. PCC/CH2Cl2 c. PDC/DCM d. CrO3/pyridine
Last Answer : d. CrO3/pyridine
Description : Benzene reacts with propene in the presence of H2SO4 catalyst to give (a) n-Propylbenzene (b) Benzophenone (c) Cumene (d) Nothing happens
Last Answer : Cumene
Description : Ethyl alcohol on oxidation with acidified `K_(2)Ce_(2)O_(7)` gives
Last Answer : Ethyl alcohol on oxidation with acidified `K_(2)Ce_(2)O_(7)` gives A. `CH_(3)COCH_(3)` B. `HCOOH` C. `CH_(3)COOH` D. `HCHO
Description : Oxidation of a primary alcohol with produces (a) a carboxylic acid (b) an ether (c) a ketone (d) an ester
Last Answer : a carboxylic acid
Description : The hormone produced during adverse environmental conditions is (a) benzyl aminopurine (b) bichlorophenoxy acetic acid (c) ethylene (d) abscisic acid
Last Answer : (d) abscisic acid
Description : Features of phenoxymethyl penicillin include the following: A. It is acid stable and orally active B. Its antibacterial spectrum is similar to that of benzyl penicillin C. It is used for less serious penicillin G sensitive infections D. All of the above are correct
Last Answer : D. All of the above are correct