chapter 14 - 22 chemistry question bank for cet

5/13/2018 Chapter 14 - 22 Chemistry Question Bank for CET

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Chapter 14 : Synthetic Organic ChemistrySI. QuestionNo.

2 .

1. Which is the reagent used to convert ethyl alcohol into acetic acid?

When chloromethane is heated with sodium in dry ether formsethane. Name the reaction.

Wurtz reaction3 . Name the reagent used for decarboxylation.

Soda lime or NaOH + CaO (1mark)4 . Identify 'X' in the following reaction,

Cil ) xCH4 Sttnlighl CH3CI ~ C2H6

Sodium in dry ether (1 mark)5 . Name a reagent which can convert chloroethane into ethanol.

Aqueous potassium hydroxide6. How do you convert methane to ethane?

Methane to methyl chloride (l mark)Methyl chloride to ethane (1 mark)Either in equation or in words7 . Identify A,B, C and D in the following reaction.

K1Cr2O ,C2HS Cl aq.KOH) A ) B NoOH) C Sodalim.) DH2SO4

Obj/ Spec.!Diff. Level

UIdentify

UIdentifyAverage

KNameAverage

UIdentifyAverage

UIdentifyEasy

UExplainAverage

UIdentifyDifficult

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A ~ C2HsOH ( Y z mark)B ~ CH3COOH ( Y z mark)C ~ CH3COONa ( Y l mark)D ~ CRt ( Y z mark)

8 . How would you convert methane to methyl alcohol? ATranslateAverageCRt+Ch h v ) CH3CI + HCI with expression (1mark)CH3CI + KOHaq ~ CH30H + KCI (1mark)

9 . How do you convert methanol to ethanol? ATranslate /3 steps (3marks)

Chapter 17 : HydrocarbonsSI. QuestionNo. Obj/SpecJDirr. Level1. Name the highly strained cycloalkane according to Baeyer's straintheory. KName

EasyCyclopropane

2. What is angle strain? KDefineEasyDeviation of each bond angle from normal tetrahedral angle.(Planar should be mentioned)

3. Who proposed planar model for cycloalkanes? KRecallEasyBaeyer

4. Which confirmation of cyclohexane is more stable? KRecallEasyChair form

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5 . Who proposed the theory of Strain less rings? KRecallEasySachge Mohr

6 . What is the angle strain in cyclobutane? KRecall944'

7 . Write the formula used to calculate angle strain in cycloalkanes .. KRecallAngle strain = Y2(1090 28' - Bond angle in cycloalkanes)

8. What is the value of tetrahedral bond angle? KRecallEasy

109028'9. What is the state of hybridization of carbon atoms in Benzene? UIdentifyEasy

Sp210. Which is the neutral electrophile involved in the sulphonation of Ubenzene? IdentifyAverage

S0311. Name the reaction by which alkylation of Benzene is done. KNameEasy

Friedel Craft's reaction12. Name the electrophile involved in the nitration of benzene. UIdentifyAverage

Nitronium ion

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13. Bond angle in a cycloalkane is 108. Calculate the angle strain.

Angle strain =Y z (109 28' - Bond angle) Y z markAngle strain =Y z (109 28' - 108) Y z mark=Y z (19 28') (Y z mark)=9 44' (Y z mark)

14. Write the structures of boat form and chair form ofcyclohexane.

Boat form structure - (1 mark)Chair form structure - (1 mark)15. Explain Sachse-Mohr theory of Strain less Rings.

1. Non-planar (1 mark)2. Tetrahedral bond angle (1 mark)16. Explain the mechanism of chlorination of benzene.

1. Generation of electrophiIe (Cl)2. Attack of electrophile on benzene with equation3. Elimination of proton with equation17. Explain the mechanism of nitration of benzene.

1. Generation of an electrophile (NO+2) - equation2. Attack of electrophile on benzene - equation3. Elimination of proton - Equation

18. Explain the mechanism of Alkylation of benzene.1. Generation of an electrophile (R) - equation2. Attack of electrophile on benzene - equation3. Elimination of proton - equation

19. Explain the mechanism of suiphonation of benzene.

1. Generation of an electrophile (S03) equation (1 mark)2. Attack ofelectrophiIe on benzene equation (1 mark)3. Elimination of proton - equation (1 mark)4. Formation of final product - equation (1 mark)

SSolveAverage

SDrawingAverage

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UExplain

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20. On the basis of Valence Bond Theory, how will you establishi) ring structure of benzeneii) three double bonds in benzeneiii) all the six carbon atoms in benzene are identicaliv) describe bonds in benzene different from alkenesi) halogenallon ) monasubstituted productenzene

(1mark)Ntii) Benzene + 3H2 18!1'~ cycloterane (1mark)

iii) Benzene + Ch FeCI,) only one type of monasubstituted product (t mark)

iv) Benzene does not decolourise alkaline KMn04 (1 mark)

21. Write the postulates of Baeyer's Strain Theory.

1. Planar structure2. Angle strain3. Higher the strain lesser is stability4. Higher the stability easier is formation

22. What are mono haloalkanes?

Mono halogen derivatives of alkane23. Give one example for secondary mono haloalkane.

Any suitable example24. Give the IUPAC name of

2-chloro-2-methyl propane

UExplain

KRecall

KRecallEasy

KRecallEasy

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25. Name the reagent used for dehydrohalogenation.

Alcoholic potassium hydroxide26. What is the final product formed when haloalkanes are heated withalcoholic ammonia?

Quaternary ammonium salt27. Name the product formed when haloalkanes are heated withalcoholic silver cyanide.

Alkyl isocyanides OR alkyl carbylamine

28. Name the catalyst used in the Friedel-Crafts reaction.

Anhydrous aluminium chloride29. Write the general formula of Grignard's reagent.

R-Mg-X30.

C,H,B" "" + "--0Name the above reaction.

dry ether1 1 "" '--0 + 2N"

Wurtz - Fittig reaction31. Which is the chief product formed in the following reaction?

C2HsBr + 2Na +BrC2Hs dry "'Mr > . . . . . + 2NaBr

Ale. KOH (1 mark)

KRecall

UIdentifyAverage

UIdentifyAverage

KNameE a s y

KRecallE a s y

AInterpretDifficult

UIdentifyE a s y

UIdentifyE a s y

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33. R - OH + X ~ R - CI + POCh + HCI. Identify 'X' . UIdentifyX ~ PCls

34. When alcohols are heated with thionyl chloride in presence ofpyridine form haloalkanes. Write equation for the reaction. ATranslateAverage

R-OH+ SOCh Pyridine ) R - CI + S02 + HCl35. Explain Wurtz reaction with an example. UExplainAverage

Explanation (1 mark)Example (1mark)36. Explain Wurtz - Fittig reaction with an example. UExplain

AverageExplanation (1 mark)Example (1 mark)

37. Explain Friedel-Crafts reaction with example. UExplainAverage

Explanation (1 mark)Equation (1 mark)38. Explain dehydrohalogenation reaction with an example. UExplainAverage

Explanation (1 mark)Equation (1 mark)39. Write any two differences between SN1 and SN2 mechanisms. UDistinguishAverage

Any two (one mark each)

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40. What happens when haloalkanes are heated with magnesium in dryether? UExplainDifficult

Explanation (1 mark)Equation (1 mark)Or self explanatory equation (2 marks)

41. Explain SN1 mechanism with example. Mention rate equation. UExplainAverage

I. Formation of carbocation (I mark)2. Attack of nucleophile on carbocation (I mark)3. Rate = k [Alkyl halide] (I mark)

42. What is SN2 mechanism? Explain it with hydrolysis of methylbromide with aq. NaOH. UExplainAverageDefinition (1 mark)Attack of nucleophile (OH) from rear side ( ~ mark)Transition state in which C - OH is partially formed ( ~ mark)And C - Br bond is partially broken ( ~ mark)Final product with inverted figureRate = k [RX] [OIr] (~mark)

Chapter 18 : Organic Compound containing Oxygen Atom IISl. Question Objl Spec.1No. Diff. Level1. Give an example for Dihydric Phenols. KRecallEasy

Catechol or Resorcinof or Quinol.2 . What is the IUPAC name of cumene? KRecallEasy

Isopropyl benzene

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3 .

4 .

Arrange phenol, p-Cresol and p-nitropenol with increasing orderof acidic strength.

P - Nitrophenol > Phenol> P - CresolName the fraction of coal-tar which contains phenol.

Middle oil fraction5 . What is IUPAC name of picric acid?

2,4,6 Trinitrophenol6 . What is the product obtained when phenol is treated with hotnitrating mixture?

Picric acid or 2,4,6 - Trinitrophenol.7 . Identify A in the given reaction.

+ 3Br2 ----- A+HBr8 . Name the product obtained when phenol is heated with carbon -tetrachloride and sodium hydroxide followed by acidification.

Salicyclic acid9 . How is phenol obtained from sodium benzene sulphonate and giveits reactions?

Statement : 1 markReaction with condition: 1mark

AClassifyAverage

KRecallEasy

KRecallAverage

UDescribeAverage

SSolveEasy

KRecallDifficult

UDescribeAverage

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10.

II.

12.

13.

Give any two applications of Phenol.

Any two uses (1+ 1 )Explain Riemer-Tiemann reaction for the conversion phenol tosalicylic dehyde and give the chemical equation.

Explanation - I mark, balanced equation with condition - I markHow is phenol converted into salicylic acid by Kolbes reaction?Give the chemical equation.Explanation (1 mark)Equation with reaction condition (I mark)Write the possible resonation of structures of phenoxide ion,among them which is relatively more stable.

In In[ Y z marks each]identification Y z mark

112112 112

14. How does phenol react with bromine water give its chemicalequation?Statement in words - 1 markReaction with condition - 1mark

15. How does phenol react with dil. Nitric acid? Give its chemicalequation.

Explanation (statement) - 1 mark and reaction - I mark16. Explain the effect of the following substituents on the acidity ofphenol.a) - CH3 group b) - N02 group.

KRecallEasy

UDescribeAverage

UDescribeAverage

APredictDifficult

KRecallAverage

KRecallAverage

UDescribeAverage

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17.

18.

19.

20.

21.

e' withdrawing! releasing, acidity increases;! decreases. Explain 2marks.How does phenol react with bromine in CS2 or CCI4? Give itsequation.

Statement - 1 mark, reaction equation - 1 markName the major product obtained when aq. Solution of benzenediazonium chloride is boiled and give the reaction involved in it.

Name - 1 mark, Reaction - I mark.How is phenol converted to a mix of ortho and para cresol? Namethe chemical reaction and give its equation.Statement - 1 mark, name - 1 mark, balance chemical equation -1 mark.Which class of phenols, the following compounds belong to ?O-Cresol, Pyrogallol, Quinol, Resorcinol.~ marks each.How is phenol manufactured by cumene process? Give itschemical equation.

Explanation - 1 markStep I : Conversion of benzene to cumene - 1 markStep II : Conversion of cumene to phenol - 1 mark22. How is phenol isolated from coal - tar? Give its chemicalequation.

Upto Naphthalein separation - 1 markSeparation of impurities and purification of phenol- I markTwo chemical reactions - lmark

KRecallAverage

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APredict.

KRecall

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UDescribeAverage.

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23. Name the reducing reagent used in Clemmenson's reaction. KRecallEasy

Zn Hg/ cone. HCI24. CH3--CH--CHO KI NamingGive the IUPAC name of CH3 Easy

2_'methyl propanal25. Give an example of aldehyde which does not reduce Fehling's solution. U

CiteexampleEasyBenzaldehyde

26. Name the catalyst used in the dehydrogenation of alcohol. UExampleEasyCopper

27. Name the product when anhydrous calcium acetate is dry distilled. KNameEasyAcetone

28. Give an example of an aldehyde containing only a. hydrogen atom. UCiteexampleEasyAcetaldehyde containing only a. hydrogen atom

29. Propionaldehyde does not undergo cannizalo's reaction. Why? AAnalyseEasyLack of a. - hydrogen atom.

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30. Which of the following reacts with sodium bisulphate to give whiteprecipitate?Autophenol / AcetoneAcetone

31. Mention the reagent used to distinguish HCHO and C6HSCHO.

Fehling solution or Benedict solution32. Name the condensation product of formaldehyde and ammonia which is used

for urinary infection:

Urotropine33. Write IUPAC name ofCH3 - CH3 - CO - CH3.

2-Butanone34. Give an example for cannizzaro's reaction with equation.

2C6HsCHO + KOH --4C6HsCH20H + Ct,HsCOOK Example - 1or2HCHO + NaOH --4 CH30H + HCOONa.

35. What is an aldol condensation reaction? Give an example.

Definition - 1 mark, with equation - 1 mark36. How is acetaldehyde converted to acetaldoxime?

Explanation -1 mark, equation - 1 mark

APredictEasy

AMention. Easy

AAnalyseEasy

KNameEasy

UCiteexampleAverage

UExplainAverage

AInterpretAverage

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37. Identify the catalyst A and product B in the following conversion.

A

A 7CH3COONa -1 markB7C6HsCH =CH - COOH - 1 mark

UIdentifyDifficult

38. Give reason. Benzaldehyde does not give precipitate with Felhing's solution. AReasonAverageBecause it undergoes cannizzaro reaction with NaOH present in Fehling'ssolution.

39. What happens when ethanol vapours are passed over copper at 300C? Writeits equation.

Explanation - 1mark, equation- 1mark40. Explain Clemmensen's reduction with suitable example.

Explanation with suitable reducing reagent - 1 markExample - 1mark41. How is acetaldehyde obtained from calcium formate and calcium acetate?Write equation.

Explanation - 1markBalanced chemical equation - 1 mark

42. Write any two uses of Acetophenone.

Write any two uses. (2 marks)

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UExplainAverage

AInterpretAverage

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43. What. happens when acetone reacts with phenyl hydracine? Write its equation. KMentionAverage

Explanation - 1 markBalanced chemical equation - 1mark44. Explain the mechanism of Cannizzaro's reaction.

Step I : Formation of Nucleophile (OH-) and Nucleophile attacks the firstmolecule of the aldehyde to give complex anion. (1 mark)oI I ~RCH + OH -__,~

-oIRCHIOH

Step II : The anion interacts with the second molecule of the aldehyde. (1mark)

c rCHIOH (0+HCRoI IRCIOH

-oI+HCRIHStep III : The carboxylic acid molecule donates a proton to the anion giving acarboxylate ion and an alcohol. (1 mark)

-oI+HCRIHoI IRC +I -a

aHIHCRIHaI IRCIa-H

alcoholaI IRC1 -a

oI IRCIaNa

KRecallAverage

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45. Write the equations for the following reaction.1. Mixture of calcium formate and calcium acetate is dry distilled.2. Vapour of isopropyl alcohol are passed over heated copper.3. benzaldehyde is heated with acetic anhydride in the presence of fusedsodium hydroxide.CH3-COO", HCOO

1. \cs dry 2CHlCHO + 2CaCOl.>:HCrx/ distillationCH3-COO

1mar ieCu

CH3-'-CO-CH3 + H z t. CH3-CH-CH3I 300 cOHHI Hz-Ot-~ ~Cat1;-C=0 + ./0

Cl-\,-o:r 18d'C

46. Give the IUPAC name of Formic acid.

Methanoic acid - Imark47. Write the general formula of Monocarboxylic acid.

R-COOH -1 mark48. Name the product formed when CH3MgI reacts with C02 followed by acid

hydrolysis.

Formic acid - 1mark49. Identify A in the reaction given below:

R - COOH +HO - R' ~ R - COOHR' +H20

UCiteexampleDifficult

KNamingEasy

UGeneralizeAverage

KRecallEasy

UCiteexample

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50. Name the gas evolved when carboxylic acids react with sodium bicarbonate. UIdentifyEasyC02 or carbon dioxide - 1 mark

51. Identify' A' in the reaction given below.~R-COOH+R'-OH A RCOOR' + H20

, Concentrated sulphuric acid.52. Name the product obtained when acetic acid is heated with ammonia followedby heating.

Acetamide53. Write the formula of catalyst used in decarboxylation of mono carboxylicacids.

[NaOH+ CaO]54. Name a substituent group which decreases the acid strength of the carboxylicacids.

Methyl group or any alkyl group name55. Which among the following groups increases acidic strength of carboxylicacid?

I (Iodine)56. Arrange the following carboxylic acids in decreasing order of acid strength.Formic acid, propionic acid, Acetic acid

Formic acid> Acetic acid> Propionic acid57. Among monochloro acetic acid and monobromo acetic acid, which isstronger?

Mono chi oro acetic acid

UIdentifyAverage

UIdentifyAverage

UIdentifyAverage

UExampleAverage

UIdentifyAverage

AAverage

UIdentifyAverage

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58. Give any two uses of methanoic acid.

Any two correct uses - 1+ 1mark59. Identify the compound A in the following reaction and give its molecularformula.

A+2[O]

Ethyl alcohol - 1 markCH3CH2 - OH - 1mark60. Name the product formed when ethane nitrite is heated with dilutehydrochloric acid. Write the reaction equation.

Acetic acid - 1 markCorrect chemical equation - 1mark61. How are alkyl magnesium halides converted into Monocarboxylic acids?

Give reaction equation.

Explanation - 1 markChemical equation - 1mark

62. Define esterification. Give its chemical equation.

Definition - 1mark, Equation- 1 mark63. How is acetic acid converted to methane? Name the reaction.

Acetic acid heated with soda lime (or chemical equation) - 1 markDecarboxylation - 1 mark

KRecallEasy

ARecallAverage

ARecallAverage

KRecallEasy

KRecallEasy

UAverage

64. Acetic acid reacts with 'X' in presence of pyridine to give acetyl chloride. AIdentify the reactant 'X' and write reaction equation. AveragePCl, or phosphorus penta chloride - 1 mark, Chemical equation - 1 mark

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65. Acetic acid is weaker than formic acid. Why?

- CH] group in acetic acid is electron donating - 1 markStability of carboxylate anion decreases - ~ markLower the stability of carboxylate anion weaker will be the acid - ~ mark.

66. Mention any two uses of ethanoic acid.

Any two correct uses. (2 marks)67. What happens when monocarboxylic acid reacts with sodium bicarbonate?Give chemical equation.

Sodium salt of the carboxylic acid is formed with liberation of CO2 gas - ImarkReaction equation - I mark68. Among 2 - chloropropanoic acid and 3-chlolropropanoic acid, which is

stronger? Give reason.

2 - chioro acetic acid - 1 markCloser the chlorine (electron withdrawing group to - COOH group stronger isthe acid - I mark.- I effect of 'CI' depends on distance. - 1 mark

69. Explain acidity of Aliphatic monocarboxylic acids using resonance.

Resonance structures of carboxylic acid - 1markPositive charge on oxygen atom helps the release of proton - YlmarkResonance structures of carboxylate anion - 1markResonance stabilization of carboxylate anion is more - ~ mark

70. Among the following carboxylic acids, which is strongest and which is theweakest acid?BrCH2COOH, CI- CH2COOh, CH]COOH, F - CH2COOHStrongest acid -7 F - CH2COOH - 1 markWeakest -7 CH]COOH -1 mark

AReasoningAverage

KRecallEasy

.AReasonAverage

SDrawingstructuresDifficult

AClassifyAverage

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71. Identify A and B in the following reaction:OC )e,her O=C -OMgIICH3

H20) B + MgIOH

A ~ C02 - 1markB ~ CH3COOH - 1mark72. Glucose reduces Tollen's reagent to black precipitate and it gives penta acetylderivatives with active anhydride. What inference can be drawn from above

reactions?

Glucose contain an aldehyde gp - lmarkGlucose contain five -OH groups - 1 mark73. What happens when Formic acid reacts with sodium bicarbonate? Givechemical equations.

It gives sodium formate with liberation of carbon dioxide gas - 1markChemical equation - 1mark

Chapter 19 : AminesSI. QuestionNo.1. What are amines?

Derivatives of ammonia, formed by replacing hydrogen atoms by alkyl or arylradicals.2 . What is the general formula of primary amines?

R - NH2 R-alkyl or aryl group

UDrawinginferenceAverage

UExplainAverage

Objl Spec.1Dire. LevelKRecallVery easy

KRecallVery easy

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3 . Name the reaction for the conversion of an acid amides into primary amine.

Hoffmann's Bromamide reaction4 . Why amines are basic in nature?

Due to the presence of lone pair of electrons on nitrogen.5 . Name the product missing in the equation.C6Hs CONH2 + br2 + 4KOH ~ + 2KBr + K2C03 + H20

Benzamide6 . When aniline is heated with chloroform and alcoholic potash, a foul smellinggas is liberated. Recognize the compound.

Phenyl isocyanide7 . Methylamine reacts with sodium nitrite and hydrochloric acid liberating acolourless gas. Identify the gas.

Nitrogen gas8 . Name the test used for primary amines.

Carbylamine9 . Give the general equation for the conversion of alkane nitriles intoalkanamines.

10. Between methyl amine and aniline which has lower pKbvalue?

Methyl amine

KIdentifyAverage

A-Assignreason

KNameAverage

KRecognizeAverage

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KNameEasy

AGeneralizeAverage

APredictDifficult

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11. Give the IUPAC name of KNameCH3--CH2-N--CH2-CH3 Average. I

CH3

N-ethyl, N-methyl ethanamine

12. Which among the following is the strongest base? UCH3NH2, NH3, C6HSNH2 IdentifyAverageCH3N1-h13. Explain Hoffinann's bromamide reaction with an example. UExplainAverage

Explanation (1 mark)Example (1mark)

14. Explain diazotisation reaction with an example. UExplainAverage

Explanation (1 mark)Example (1 mark)15. When nitrobenzene is heated with Tin and cone. HCl, it forms primary amine.Write the equation for the reaction. Give the IUPAC name of the primaryamine formed.

ATranslateDifficult

S,,+ Hel ) C6HsNH2 + 2H20Benzenamine16. Explain carbyl amine reaction with an example. UExplainAverage

Explanation (1 mark)Equation (1 mark)17. Why is methyl amine stronger base than ammonia? AAssignreasonAverage

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1. CH3 is electron releasing group or (+1 effect).2. Electron density on nitrogen increases

18. What is the action of nitrous acid (NaN02 + HCI) on methyl amine? Giveequation.

Statement (1 mark)Equation (1 mark)19. Give any two uses of aniline.

Two uses (l + 1marks)20. Explain Alkylation of primary amines with an example.

General statement (1 mark)Statement of example (1 mark)Equation (1 mark)21. Explain the test to distinguish primary, secondary and tertiary amines.

Observation for the test for primary, secondary and tertiary amines.(3 marks)

Chapter 20: CarbohydratesSl. QuestionNo.1. What are polysaccharides?

Contain many number of monosaccharides. - 1mark2 . Give an example for a disaccharide.

UExplainAverage

KRecallEasy

UExplainAverage

UDistinguishAverage

Obj! Spec.!D i r r . LevelK

Recall,Easy

UCiteexampleEasy

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Sucrose or Maltose or Lactose - 1 mark3. What are monosaccharides? KRecall

EasySimple carbohydrates which cannot be hydrolysed - 1 mark

4. What are oligosaccharides? KRecallEasyOn hydrolysis give two to nine or few monosaccharides. (1 mark)

5 . Name a carbohydrate which on hydrolysis give two molecules of samemonosaccharide. UNameEasyMaltose - 1 mark

6 . Write the open chain structure of Glucose. SDrawAverageCHOIHCOHIHO-C-HIHCOHIHCOHICH20H

I mark

7 . How many hydroxyl groups are present in a glucose molecule? KRecallEasy

5 or five (1 mark)8 . Give an example for aldohexose. KRecallAverage

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Glucose or Galactose - 1 mark9. How many primary alcoholic groups are present in a glucose molecule? URecallEasy

One-l mark10. Name the aldohexose present in grapes. KRecall

EasyD-glucose - 1 mark

11. Among Glucose and fructose, identify ketohexose. UIdentifyAverage

Fructose - I mark12. What is the name given to a monosaccharides containing 6 - carbon atom Uand kenotic group?

Ketohexose13. Write the structure (Haworth's) for a. - maltose. . S

DrawingAverage14. Give reactions to confirm the presence ofa) - CHO group in glucoseb) Five hydroxyl groups in glucose

ADrawinginferenceAveragea) One test for -CHO group (1 mark)b) One test for five-OH groups (1 mark)15. Give the Haworth's structure of sucrose. SDrawing

DifficultCorrect structure - 2 marks

16. Carbohydrates act as a source of energy. Explain. AIllustrate/defendDifficult

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Explanation in two sentences with equation.Experiment - 1markEquation - 1mark

Chapter 21 : Oils and Fats

SI. QuestionNo.1. Which catalyst is used in hydrogenation of oils and fats?

Finely divided Nickel.2 . Between oils and fats, which are highly unsaturated in nature?

Oils3. Give an example of saturated fatty acids.

Example of any saturated fatty acid.4 . Identify the simple triglycerides of the following.

a) b)

a)5. Name the substance used to decolourise oils.

Obj! Spec.!Diff. Level

URecallEasy

UCompareEasy

UCite exampleEasy

UIdentifyEasy

KRecallEasy

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Animal charcoal or Fuller's earth.

6. Write the general formula of simple triglycerides.

oI IHC-O--C-R1

I "C-O--C-R1I "C-O--C-R1RJ =higher alkyl group

7 . Write the general formula of mixed triglycerides.

RJ, R2, R 3 are different highest alkyl groups.8 . Define iodine value of an iol.

It is the number of grams of iodine which combines with 100 grams of anoil or a fat.9 . What are drying oils? Give an example.

URecognizeEasy

URecallEasy

KRecallEasy

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Definition - 1 mark, example - 1 mark10. Write a note on hydrogenation of oils.

Explanation with catalyst - 1 markTemperature, unsaturated fatty acids to saturated fatty acids - 1mark11. Name the products formed when an oil is subjected to acid hydrolysis andgive its equation.

Glycerol- 'llmarkFatty acids - 'llmarkEquation - 1 mark

12. Write a note on refining of oils.

Explanation with alkali, temperature, animal charcoal - 1+ 1 mark

13. What is rancidity of oils? Mention its types.

Statement of rancidity - 1 markTypes - 'll+ 'llmarks14. Mention the biological importance of oils and fats.

Explanation with suitable examples ( 1+ 1 marks)15. Identify the reactant (A) and catalyst (8) in the following conversions.

CH2-0H8 IA + 3 NaOH ---!.~CHOHICH20H

- COOH

UExplainAverage

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UDescribeAverage

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KMentionAverage

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Chapter 22 : Amino Acids and ProteinsSI. QuestionNo.1. Give the general formula of a. - amino acids.

R-CH--COOHIN H2 (1mark)

2 . Which of the following amino acids contains sulphur?

Cysteine - 1mark3. Mention the type of linkage present between the polypeptide chains of

Insulin.Disulphide linkage - 1mark

4. Write the Zwitter ion structure for alanine.

CH3--CH--COOI +N H3 1mark

5 . Define Zwitter ion.

At isoelectric point any amino acid exists as a dipolar ion due to internalsalt formation. The dipolar is called Zwitter ion. 1 mark

Obj/Spec.lDitT. Level

KRecallEasy

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KMentionAverage

sDrawingAverage

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6. Mention the monomer unit of proteins or polypeptides.

a-amino acids 1 mark)7 . Mention the number of a-amino acids present in Insulin harmones.

Fifty one.8 . Which one among the following a-amino acids, contains benzene ring?Protein, Tyrosine.

Tyrosine - 1mark9 . Name a harmone which regulates blood sugar level.

Insulin - 1 mark10. There are two peptide linkages in a peptide. Mention the type of peptide.

Tripeptide11. Name the structural protein present in hair.

a-keratin12. Write the structures of alanine and also its Zwitterion.

Alanine structure - 1markAlanine Zwitter ion structure - 1 mark13. Name the following:a) a type of protein which fights against diseases in the bodyb) give the biological function of haemoglobin.

a) Antibodies - 1 markb) Transport agent - 1 mark

KMentionEasy

KMention

UIdentifyAverage

KNameEasy

KMentionAverage

KNamingEasy

UStructureAverage

UIdentifyAverage

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14. Define isoelectric point of a. - amino acids. KRecallAverageCorrect definitions - 2 mark

15. Explain amphoprotic nature ofa. - amino acids with reaction. UAverageOne reaction for - NH2 group - 1markOne reaction for -COOH - gp - 1mark

16. Explain denaturation of proteins. UExplain /exampleAverage

Definition - 1 ~ marksExample - ~ marks17. Give any two biological importance of proteins. KListAverage

One importance - 1 markOne importance - 1 mark

18. What are transport agents? Give an example. KRecall, citesexampleAverageDefinition - 1 mark, example - 1 mark

19. What are biochemical messengers? Give an example. KDefineAverageDefinition - 1 ~ marksExample - ~ mark

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PRACTICALS

SI. QuestionNo.

2 .

1. Glucose +Benedict's reagent hOil) =What is the observation? What is the inference?

Red precipitates - I mark, Glucose is a reducing sugar - I mark.Give a test to show that egg contains proteins.

I cnr' egg. Albumin solution gives violet colour +2 drops very diluteCUS04 +NaOH (2marks)3 . A sugar gives deep red colour when warmed with Seliwanoff's reagent.What type of sugar it is?

Ketose sugar4 . A sugar is boiled with Benedict's reagent. A red ppt. is obtained. What is

the inference drawn?Sugar is a reducing sugar.

5 . Glucose solution + ~ + cone, H2S04 gives violet ring. Identify A andname the list.

A is alcoholic solution ofL - naphthol Molisch's test.6 . Give a test to show that glucose is a reducing sugar.

Glucose + Benedict's reagent, boil- I markRed precipitate - 1mark7 . a) Name the reagents to prepare m-dinitro benzene from nitrobenzene.b) Give the equation for the reaction.c) How is the product purified?

Obj/ Spec.!Dire. LevelUInferAverage

KRecallDifficult

UIdentifyAverage

UInfer

UIdentifyAverage

KRecallAverage

UExplainAverage

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chapter 14 - 22 chemistry question bank for cet

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