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MDCAT Chemistry Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Octyl acetate has the flavor of | Orange Pineapple Banana Apple |
| 2 | Methyl cyanide, on boiling with mineral acids yield | Acetic acid Formic acid Propanoie acid Butanoic acid |
| 3 | The formation of ester from acetic aciad in presence of acid and ethanol is a | Nucleophilic substitution reaction Nucleophilic addition reaction Electrophilic substituion reaction Electrophilic addition reaction |
| 4 | Primany aleohols sornally give us aldehyde when oxidized in the presence of acidified Na2Cr2O7, what will be the product, when the secondary alcohols are oxidized in same condition? | Alkenes Alkyl halide Alkynes Ketones |
| 5 | An acid that exists as a cyclic dimer in benzene and shows a molar mass of 120g/mol is | СН3СOOH HCOOH CI2CHCOOH Сl3CCOOH |
| 6 | Velaric acid is obtained from a herb velarian, its IUPAC name is | Propionic acid Pentanoic acid Butyric acid Caporic acid |
| 7 | The Complete oxidation of ethanol produces first Ethanal than | Ethanal Propanone Ethanoic acid Benzoic acid |
| 8 | Esters have fruity smell and are used as artificial favours. Amyl acetate gives flavour of | Banana Jasmine Pineapple Orange |
| 9 | All are dicarboxylic acids except | Oxalic acid Malonic acid Picric acid Tartaric acid |
| 10 | In the presence of hot alkaline potassium permanganate solution 2-butene will give | Formic acid +acetic acid Two moles ethanoic acid Two moles of methanoic acid Ethylene glycol |
| 11 | One of the following compound reacts with its own oxidation product (an oxidation involves no loss of carbon) to give sweet odour liquid | Propanal Propanone 1-propanol Propanoic acid |
| 12 | Ethanoic acid reacts with all of these to produce water except | Ethanol Sodium Caustic soda Sodium hydrogen carbonate |
| 13 | The specie that develops strongest hydrogen bonding with water | НСООН B.CH3CH2СООН CH3СООН CICH2COOH |
| 14 | Which one of the following will react with bothethand and ethanoic acid at room temperature | CaCO3 CuO Na-metal CH3OH |
| 15 | Which of the following has the lowet solubility in water | НСOOH CH3СООН CH3-CH2-СООН C3H7-COOH |
| 16 | Slight oxidation of primary alcohol eives | Ketone Aldehyde -Organic acid An ester |
| 17 | Reaction of acetic acid with LiAIH4 gives | Ethanol Ethanal Ethane Ethyl acetate |
| 18 | A compound X has all of the properties below. It is a liquid at 25°C it mixes completely with water it reaets with aqueous sodium hydroxide, What could X be? | <sub>Ethanoic acid</sub> Ethene Ethanol Ethyl ethanoate |
| 19 | Oils and fats belong to the class of | Alcohols Hydrocarbons Acids Esters |
| 20 | Ethanoic acid reacts with PCI5, to give ethanoyl chloride. HCI and a third compound What is the third compound | H3PO3, POCI3 SO2 COCl2 |
| 21 | Compound X & Y give effervesce with Na2CO3, solution. X gives a white ppt with ammonical AgNO3 while Y gives sweet smell compound on heating with alcohol X &Y are | Formic acid & acetic acid Acetone & formic acid Acetaldehy de & acetic acid Acetic acid & acetone |
| 22 | Which of the following is a strong acid | CH3COOH C2H5OH HCOOH Phenol |
| 23 | In the esterification, first attack is due toon carborylic acid | Hydrogen ion Alcohols Water All |
| 24 | Which compound is not formed as a result of reaction between acetic acid & HI & red phosphorous | Ethanol Water lodine Ethane |
| 25 | Which of the following acid is unsaturated carboxylie acid | Malonic acid Oxalic acid Succinic acid Maleic acid |
| 26 | Which of the following metal cannot evolve hydrogen from the acetic acid | Sodium Potassium Magnesium Copper |
| 27 | The derivatives that cannot be prepared directly from the acetie acid | Acetamide Acetic anhydride Ethyl acetate Ester |
| 28 | Estyl butyrate has flavour like | Banans Jasmine Pineapple Orange |
| 29 | Ester with raspberry flavor | Amyl acetate Isobutyl formate Amyl butyrate Octyl acetate |
| 30 | Acetic acid reacts with thionyl chloride to form acetyl chloride, which species acts as nucleophile in the reaction | SO3 SO2 Cl- No nucleophile is formed |
| 31 | Carboxylic acids reacts with sodium carbonate, & gas evolved in this reaction |
CO2 H2 CO Both a &b |
| 32 | An organic compound made from oxidation of ethanol is | Formic acid Acetic acid Malonic acid Citric acid |
| 33 | 2-propanol on Oxidation gives | Aldehyde Carboxylic Acid Ketone Alcohol |
| 34 | An alcohol is converted to an aldehyde with same number of carbon atoms as that of alcohol in the presence of K2Cr2O7/H2S04 the alcohol is | CH3C(CH3)2OH (CH3)3COH <div>CН3СН2СН2OH</div><div><br></div> (CH3)2CHOH |
| 35 | The oxidation of 1 - propanol in the presence of H2SO4, +K2Cr207 produces final product | Acetaldehyde Propanal Acetone Propanoic acic |
| 36 | The conversion of tertiary alcohols into alkenes in the presence of K2Cr2O7 + H2SO4 is | Addition reaction C-H bond cleavage Elimination reaction Combustion reaction |
| 37 | When wine is put in air, it becomes sour due to | Oxidation of C2H5OH Formation of C2H5NH2 Reduction of C2H5OH Dissolution of CO2 |
| 38 | Oxidation of secondary alcohol produces | Aldehyde Ketone Alkyl halide Ester |
| 39 | 2-propanol on oxidation yield | Propionaldehyde Propanone Propanal Butanal |
| 40 | Identify the compound, which give iodoform test | Methanol 3- Hexanol Methyl ketone Propionaldehyde |
| 41 | To distinguish aldehyde from ketone which solution is used | Alkaline solution Fehling's solution A solution containing K2Cr2O7 A solution containing acid only |
| 42 | Which reagent is responsible for the conversion of ketone to secondar alcohul | NaAlH NaBH4 Al Red P |
| 43 | .Both aldehydes and ketones are planar to the neighborhoods of carbonyl (C-0) group. Which one of the following bonds is distorted towards the oxygen atoms? | pi-bond of C and O Sigma bond of C and O Sigma bond of C and H Sigma bond of C and C |
| 44 | A student mixed ethyl alcohol with small amount of sodium dichromate and added it to the hot solution of dilute sulphuric acid. A vigorous reaction took place. He distilled the product formed immediately. What was the product? | Aceton3 Dimethyi ether Acetic acid Acetaldehyde |
| 45 | Consider the following reaction R-CHO + 2Ag(NH3)2OH + R-COONH+ +2Ag+2NH3+H2OThis reaction represents |
Fehling test Ninhydrin test Benedict lest Tollen's test |
| 46 | Acetaldchyde and ketone form addition product with | Phenyl hydrazine Hydroxylamine Hydrazine hydrogen cyanide |
| 47 | In aldehydes and ketones carbon of carbonyl group is; | sp³ hyhridized sp² hybridized sp hybridized un hybridized |
| 48 | When calcium formate and calcium acetate are dry heated they form | НCOOH C2H5OH CH3CHO HCHO |
| 49 | Which of the following gives positive haloform test and positive Fehling solution | Acetone Echanol Acetaldehyde Formaldehyde |
| 50 | The reagent used to distinguish between ethanol and propanal is | I2/ NaOH Benedict's reagent LiAIH sodium nitroprusside |
| 51 | The addition compound obtained by reacting acetaldelyde and HCN, when Iydrolyzed gives | Ethyl alcohol Methyl cyanide 2-Hydroxy propanoic acid Ethyl cyanide |
| 52 | The reaction of formaldehyde with HCN is | Nucleophilic substitution Electrophilic substitution Nucleophilic addition Free radical addition |
| 53 | Propanone does not undergo | Oxime formation Reduction of Fehling solution Hydrazone formation with hydrazine Reaction with HCN |
| 54 | Which of the following reagents reaet in same manner with HCHO, CH3CHO andCH3COCH3 | HCN Cu2(OH)2/ NaOH Ammonical AgNO3 Cu(OH)2 only |
| 55 | Which of the following alcohol cannot be produced by treatment of aldehydes or ketones with NaBH4 | I-propanol 2-Methyl-2-propanol 2-propanol Ethanol |
| 56 | Which of the following ketone will not give iodoform test | Methyl isopropyl ketone Dimethyl ketone Ethyl isopropyl ketone 2-hexanone |
| 57 | In which of the following types of reactions are the carbonyl compounds and alkene are similar in behaviour | Nucleophilic addition Electrophilic addition Nucleophilic suhstitution Catalytic hydrogenation |
| 58 | Which of the following gives silver mirror with ammonicaT AgNO3 | <div>Benzyl alcohol</div> Benzene Benzoic acid Benzaldehyde |
| 59 | Which of the follwing dnes not give brick red precispitate wits Fehling's solution | Acetaldehyde Formalin prorionaldehyde Acetone |
| 60 | Which of the following does not give yellow precipitate with I2+ NaOH | Acetone Benzaldehyde Acetildehyde Acetophenone |
