Organic Chemistry Questions
The best high school and college tutors are just a click away, 24×7! Pick a subject, ask a question, and get a detailed, handwritten solution personalized for you in minutes. We cover Math, Physics, Chemistry & Biology.
Organic Chemistry
General organic chemistryWhich of the following species will not have a formal positive charge on a carbon atom OA The Intermediate that forms when tert butyl alcohol reacts with hydrochloric acid after loss of water OB Any Intermediate from reaction of acetyl chloride and methoxybenzene OC An aromatic cyclopropenyl compound OD The intermediate from reaction of NaSPh with 2 4 6 trinitrofluorobenzene
Organic Chemistry
Aldehydes & Ketoneshate solution 19 Which of the following reaction is a condensation Para formaldehyde HCHO CH CHO a b e CH3COCH3 d CH CH Polyethylene Paraldehyde Mesityl oxide rea
Organic Chemistry
General organic chemistryQ3 A How can we measure the aromaticity which of the following is aromatic put a circle 5 points H A Br H HO H or A H H B B H H B H B What is meant of 1 2 adduct and 1 4 adduct for the reaction of 1 3 butadiene with hydrobromic acid write the reaction 5 points OH H C Rank the following aromatic compound according to the order of reactivity of aromatic ring 5 points C H C H C H H D D Which of the following would be suitable to use when forming a Grignard reagent Put a circle 5 points NO NH CH D Br
Organic Chemistry
Aldehydes & KetonesAllyl chloride A hat is the name of enclosed reaction and B C D Fries rearrangement O H A 250 C X Claisen rearrangement O H CH CH CH O H Claisen rearrangement CH CH CH O H 6 CH CH CH Fries rearrangement P Q CH CH CH
Organic Chemistry
General organic chemistry99 A compound X when boiled with Na2CO3 solution gives glycol as the product What is X a Ethylene b Ethylene oxide c Ethyl bromide d Ethyl hydrogen sulphate CH CH tem Na CO3 2 On M OW
Organic Chemistry
Chemistry in Daily Life3 SO NO CH3 CH C Br CH CH OH CH CH CH C Br CH CH CHONG CH CH OH Possible products are 4 SO NO CH3CH OH B major A major 2 J 3 SO NO CH3 48 CH3 C Br CH3CH OH CH 3 CH3 1 4 SO NO CH3 C Br 1 CH3 CH3CH ONa CH3CH OH CH3CH OH A R B
Organic Chemistry
General organic chemistry5Brst A of formula C3H6Cl2 on reaction with alkali can give B of formula C3H6O or C of formula C3H4 B on oxidation gave a compound of the formula C3H6O2 C with dilute H SO4 containing Hg 2 C3H6O which with bromine and NaOH gave the sodium ion gave D of formula salt of C H4O2 Then A is a CH3CH CHC12 CH3 C C b CH3CCl CH3 CH3 CH d CH c CH CICH CH Cl
Organic Chemistry
Ethers50 H3C s H C O 1 CH3 CHCH OH LIAIH A A is CH3 2 CH CH CH CH OH CH3 3 CH C OH CH3 for rough work 4 No reaction 50 3 I II IV H3C X O LIAIH H C 1 CH3 CHCH OH 4 I II III IV A A CH3 2 CH CH CH CH OH CH3 3 CH C OH CH 4 4 53
Organic Chemistry
Alcohols and PhenolsIdentify the final product Z O H5C6 A C C CH2COOC2H5 C6H5 CH C C6H5 CH C CH3 CH3 COCH 3 COCH i NaH THF i CH COCI X KOH H O A B D Y CO C H OH CH CHO OH C6H5 CH C COOH COOH CH CH CH COCH
Organic Chemistry
Etherss synthesis 147 The number of methoxy groups in a compound can determined by treating it with a HI and AgNO3 c sodium hydroxide b sodium carbonate d acetic acid
Organic Chemistry
Alcohols and PhenolsWhich of the following alcohols undergoes dehydrations upon heating with concentrated H SO with carbocation rearrangem Select all apply Points will be deducted for incorrect answers 2 methylhexan 3 ol 2 methyl 2 phenylpropan 1 ol 2 3 dimethylpentan 2 ol 3 3 dimethylpentan 2 ol 3 methylpentan 3 ol
Organic Chemistry
Chemistry in Daily LifeSolvelancer Test Some statements are given about lime calcium oxide below 1 Calcium oxide lime is an amorphous white solid 2 It has a high melting point of 2273 K 3 Heating it at a very high temperature produces white light Which statement s is are true among them Solvelancer Test a Only 1 b Both 1 and 2 c Both 2 and 3 d All are correct a
Organic Chemistry
Isomerism3 Total compound a 1 2 214 3 6 4 8 geometri isomers in the given 49 ffu af Hicefort C CH DC CD HC C 1 2 2 4 1376 4 8 C CH DC CD HC 50 CH 3m Ma 2 are t 2 2 23 2 1 1 2 CH C CH CH CH CN CH TIUPA
Organic Chemistry
Practical Detectionfind out weather there is a reaction if there is complete and balance it if there is no reaction write down no reaction Ca HCI Sb H2o with heat Al H2o with heat Pb CuNo5 Fe NaCl
Organic Chemistry
Reactions of benzeneH H C CIH 3 Select the correct option for stability of following resonance 23 f3st structures Hjal FEI 0 OCH 0 X 1 x y r CH 0 y 2 z y x Z CH 8 0 X 1 x y 3 y x
Organic Chemistry
General organic chemistryFor zero order reaction which is correct relation between t1 2 and initial reactant concentration R o t1 2 R 0 t1 200 1 R o t1 2 R hr min t1 2 is independent of R o
Organic Chemistry
General organic chemistryResonance is not shown by Question Type Single Correct Type 1 2 3 4 O C CH CH CH CH
Organic Chemistry
Hydrocarbons48 Y Answer the following by appropriately matching the lists based on the information given in paragraph Consider the compounds given in List I and the number of monohalogenated products in List LIST I P 1 P 11 R CH3 H C CH CH CH CH3 CH3 H C C C CH3 CH3 CH3 III CH3 T H C CHCH3 IV 5 H CCH2CH2CH A 1 P C II S Q R A II P C IV T S T 4 6 1 2 3 5 Which of the following options has the correct combination considering List I and List 11 Options B 1 Q D IV R LIST II Which of the following options has the correct combination considering List I and List II Options B III R D II Q
Organic Chemistry
General organic chemistryQ 33 Hydrocarbon P on heating produces 1 3 butadiene without any side products How many hydrogen atom s is are present in P Your Answer 8 Correct Answer 6 Rate this que
Organic Chemistry
Halogen Derivatives5 cis 2 Butene CH3 f CH H 1 H 2 H 4 Br 3 H C Br H C HO CH CH CH H CH H OH Br OH H HOBr OH H Br H P Identify product Pis 153 Jyr 65 cis 2 Butene HOBr H g 1 H 2 11 Br 3 4 H C Br OH H C HO CH CH3 OH Br CH CH OH H CH H H CH H Br En Pfer c s Anti F 71 Anti 72 288 270 146 18 78
Organic Chemistry
Aldehydes & Ketonesare Enantiomers The relative reactivities of acyl compounds towards 3 nucleophilic substitution are in the order of 1 Acylchloride Ester Acid anhydride Amida fi 1 m
Organic Chemistry
General organic chemistrySome reactions are given below out of which the correct combination is Reactant Reagent Major Product 1 CH3CH CH Cl 500 C CH3CH CH CI 2 CH3CH CH HBr H2O2 CH3CH CH Br 3 CH3CH CH HBr 4 CH3CH CH HCI 1 2 3 CH3CH CH Br CH3CH CH CI
Organic Chemistry
General organic chemistryNegative hyperconugation 4 All of these 48 Which is aromatic a c 1 a b c 2 a b c d 3 a c d 4 b c d b H N d N N N N 48 4 B a c 1 a b c 2 a b c 3 a c d
Organic Chemistry
General organic chemistryn 3 show geometrical isomerism QNo 48 Which among the following compound show goomctrical isomerism O 3 Your Answer 4 Stotus incorrect CH CEC CH3 CH3 H2 Cl Br Complete Quest A
Organic Chemistry
General organic chemistry47 m directing character of Caused by 1 I effect 2 m effect 3 Negative hyperconugation 4 All of these 48 Which is aromatic C Cl is CI 47 48 1 I C 2 m 3 T 4 BUR
Organic Chemistry
Isomerism2 asymmetry 3 External compensation 4 Two asymmetric carbon atoms The pair of structures given below represents CH CH CH H CH CH HO 1 Enantiomers 3 Identical CH HOW H 2 Diastereomers 4 Position isomers 1 antas 4 2 faran e 3 24 fari 4 fura 21 H mi CH HO 1 1 ufafara 3 47 F 2
Organic Chemistry
Amines5 Match column A catalyst with column B process B A 1 SiO2 2 Pt 3 Zeolites 1 1 1 2 II 3 III 3 1 II 2 III 3 I I Cracking of Hydrocarbon II of benzene III Automobile converter 2 1 III 2 II 3 1 4 1 III 2 I 3 II
Organic Chemistry
HydrocarbonsWhich one is a right statement for the isomerism Choose every one Geometrical isomers are the same as the stereoisomers Structural isomers is different from the constitutional isomers There are two major groups in isomerism structural and stereo isomers One of condition for being isomers between two compounds is having the same molecular formul
Organic Chemistry
General organic chemistryReactant CH3 KOH a CH3 OH CH3 OH a CH3 OH CH OH H SO Conc 1 NaH 2 CH 1 HBr 2 Mg 3 CH l 1 Na 14 2 CH p G r Products CH3 14 OCH3 CH3 CH3 CH3 OCH CH3 OCH
Organic Chemistry
Hydrocarbonsa b c d 2 Only a c d 3 Only c d 4 Only b c d Correct order of heat of hydrogenation a CH CH b N c CH C CH CH d CH CH CH 1 b c d a 2 b c a d 3 a b d c c b a d 6 3 a b c d c d a CH CH b N c CH C CH CH d CH CH CH 2 1 b c d a 2 b c a d 3 a b d c 4 c b a d 2 da c d 4 b c d
Organic Chemistry
AminesH D H 1 3 D H N D CH3 duct is Br H H H NaN DMF CH3 CH3 he vanours of an alcohol Y aro H H A LIAIH4 ii H O 20 2 B 4 None NO H CH3 D BEN D chy 57 re CH3 H 1 H D 3 N D CH3 NENEN EAR ESR FSR NSR Solid State Batch Br NaN H H H CH H LIAIHA DMF A ii H O SNS 3 2 4 B NO CH3
Organic Chemistry
General organic chemistryWhich of following is are correct Question Type Single Correct Type 1 2 3 H H H O is Aromatic O H H OH H H H O H OH H H Stability H O H
Organic Chemistry
General organic chemistryIdentify the true statement regarding which of these structure is a better representation of the real molecule and why A AJ N H H 0 N H These are equivalent resonance structures in terms of formal charges and electronegativities The structure on the right is favored because it has lower formal charges The structure on the left is favored because it has lower formal charges The structure on the right is favored because it puts the negative formal charge on the more electronegative atom The structure on the left is favored because it puts the negative formal charge on the more electronegative atom
Organic Chemistry
IsomerismThe compound s which show Keto enol tautomerism is ar II III I only II only hr min II and III only
Organic Chemistry
General organic chemistryU Why medicine bottles are mostly orange or in shades of brown Orange brown are the most commonly used colours because of their ability to prevent UV light from damaging or degrading any photosensitive contents that are prone to photochemical reactions 618 boml 99 E 92 E 50
Organic Chemistry
AminesNEET CHEMISTRY All India Major Test Series Phase I II Major Test 28 22 03 06 2020 Q 139 An organic compound A on treatment with Q 139 AN NH gives B which on heating gives C C when treated with Br in the presence of KOH produces ethylamine Compound A is 1 CH CH COOH 2 CH COOH 3 CH CH CH COOH 4 CH CHCOOH CH BCC Br er KOH 1 CH CH COOH 2 CH COOH 3 CH CH CH COOH 4 CH CHCOOH CH fra A
Organic Chemistry
General organic chemistry4 Show how to make benzene from cyclohexene Show all the intermediates and reagents used 2 pts 5 Show how to accomplish the following conversion Show all the intermediates and reagents used 2 pts o
Organic Chemistry
General organic chemistry320 Which of the following is correct order i p CH CHO Ph CHO CH C CH Ph C Ph Reactivity in nucleophilic addition reaction NAR q Ph C Cl Ph Reactivity in hydrolysis CHO u CH CHO COCI COCI CH Ph C OR Ph C NH OCH CH Reactivity in nucleophilic addition reaction NAR COOH FO CHO COCI CN Reactivity in hydrolysis t HCHO CH CHO CH CO Ph CHO Reactivity towards Grignard reagent COOH Rate of decarboxylation 1 p q CHO NO 2 r s t COCI NO COOH
Organic Chemistry
General organic chemistry9 CH3 CH CH HBr CH3 Br 1 CH3 CH2 C CH3 1 CH3 CH3 2 CH3 CH CH CH Br CH3 3 CH3 CH C CHz 1 Br CH3 Br 4 CH3 CH CH CH3 CH3 perosade
Organic Chemistry
AminesTK for Review Which of the following pair of compounds can be distinguished by isocyanide test NH and CH NH CH NHCH3 and CH3 N CH3 I CH CH CH NH and CH NH CH NH I CH CH NH and CH3 CH CH3 hr
Organic Chemistry
Biomolecules8 A 5 solution of cane sugar molecular weight 342 is isotonic with 1 solution of substance X The molecular weight of X is 1 171 2 2 68 4 3 34 2 4 136 2
Organic Chemistry
Reactions of benzeneThis is solution of my previous doubt here how do I know which is R and which is R Example for butanoic ethanoic anhydride will butyl or ethyl attach to benzene ring and w hy Ex 1 R O 11 C Anhydride O 1 R 0 R Alel3 R Deylation 14 Ale 3 C R
Organic Chemistry
General organic chemistryWhich of the following is correct order of reactivity A B Vinyl chloride Altyl chloride Propyl chloride Propyl chloride Vinyl chloride Allyl chloride
Organic Chemistry
Isomerism1 I II 3 I II III 4 II III IV Which of the following statements about the conformer that result from rotation about the C C3 bond of butane is correct 1 Torsional strain is absent in the eclipsed forms 2 Steric strain is absent in the eclipsed forms 3 The gauche conformer is an eclipsed one 4 The highest energy conformer is one in which methyl groups are eclipsed by hydrogens 5 None of the above
Organic Chemistry
General organic chemistry21 Compound P on treatment with NaOH gives major product Q Predict the correct stereochemical descriptor for P and Q OTS coro P A P is R and Q is S B P is R and Q is Racemic C P is S and Q is R D P is S and Q is Racemic NaOH Q
Organic Chemistry
General organic chemistryWhat relationship can be used to find the mass of H O that can be produced from complete reaction of 3 moles of NaOH in the shown reaction 3 NaOH H3PO4 Na3PO4 3 H O a 3 mol H O X b 3 mol H O X c 3 mol NaOH X d 3 mol NaOH X e none correct OC Ob 40 00 g NaOH 3 mol NaOH Oe Od 3 NaOH 3 H20 3 H20 3 NaOH 3 H20 3 NaOH X X X X 1 mol H20 18 02 g H20 40 00 g NaOH 1 mol NaOH 1 mol NaOH 40 0 g NaOH 18 02 g H20 1 mol H20
Organic Chemistry
General organic chemistry5 CH CH CH 1 CH CH CH3 CH CH CH CH CH CH3 CH CH COOH CH3 CH CH CH CH3 OH i 6 CH3 CH CH C CH3 7 CH CHO CHO 1 CH3 CH CH CH3 8 9 CH3COOH CH CH CH
Organic Chemistry
General organic chemistry181 Which of the following undergoes dehydration readily a 1 phenyl 1 butanol L c 2 phenyl 2 butanol nd b 1 phenyl 2 butanol d 2 phenyl l butanol
Organic Chemistry
General organic chemistryIdentify the reagent used in the following transformation HO A B C D OH P LiAlH P NaBH MeOH P CeCl 7H O P HO P NaBH CeCl 7H O Q KMnO4 OH OH MnO CH Cl Q Ag CO on celite PhH Q MnO CH Cl Q OH
Organic Chemistry
General organic chemistryAmong the following pairs of orbitals which orbital will experience the larger effective nuclear charge i 2s and 3s ii 4d and 4f iii 3d and 3p a 4f 3d and 3s respectively b 2s 4d and 3p respectively c 2s 4d and 3d respectively d 4d 3p and 2s respectively