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19817 Alkyl Halides and Aminesiii. For which mechanisms, the first step involved is the same;a. E1 and E2 b.E2 and SN2 c. E1 and SN2 d. E1 and SN1iv. The rate of E1 reaction depends upon;a. the concentration of substrateb. the concentration of nucleophile.c. the concentration of substrate as well as nucleophiled. None of the above.v. Alkyl halides are considered to be very reactive compounds towards nucleophiles,because:a. they have an electrophilic carbonb. they have an electrophilic carbon and a good leaving groupc. they have an electrophilic carbon and a bad leaving groupd. they have a nucleophilic carbon and a good leaving groupvi. Which one of the following is not a nucleophile:a. H2O b. H2S c. BF3 d. NH3vii. Double bond is formed as a result of;a. Substitution reactions b. Elimination reactionsc. Addition reactions d. Rearrangement reactionsviii. Which of the following alkyl halides cannot be formed by direct reaction of alkanes withhalogena. RBr b. RCl c. RF d. RIix. CH3CH2Br on treatment with alc.KOH gives:a. Propanal b. Propene c. Propane d. Nonex. Grignard’s reagent gives alkane with;a. Water b. Ethylamine c. Ethanol d. All of thesexi. Action of alkyl halides with Na metal yield;a. Alkanes b. Alcohols c. Alkenes d. Phenolsxii. Alkyl halides react with excess of ammonia to give;a. 1 0 -amine b. 2 0 -amine c. 3 0 -amine d. allxiii. Among the alkyl halides the primary alkyl halides always follow the mechanism;a. SN1 b. SN2 c. SN3 d. SN4xiv. Grignard’s regent on treatment with chloramines gives;a. Acetamide b. Primary amine c. Secondary amine d. ureaxv. Nucleophilic addition of a primary amine giving;a. Imine b. urea c. ammonia d. Nitrobenzene2. Give brief answers for the following questions.i. What are primary, secondary and tertiary alkyl halides?ii. Why alkyl iodides cannot be prepared by directly heating iodine with alkene?iii. What are Nucleophilic substation reactions or SN reaction?
17 Alkyl Halides and Aminesiv. Tertiary alkyl halides show SN1 reactions mostly, why?v. What are elimination reactions?vi. Which factor decides the reactivity of alkyl halides?vii. What are the diazonium salt?viii. How can nucleophilic addition of a primary amine giving an imine?ix. Amines are more basic than analogous alcohols why?x. How tertiary alcohols are obtained from R-Mg-X?3. Give detailed answers for the following questions.i. Discuss the reactivity of alkyl halides.ii. Give three methods for the preparation of alkyl halides.iii. Explain in detail SN1 and SN2 reactions with mechanism.iv. What are β-elimination reactions? Explain them with detail.v. How will you convert ethyl chloride to the (i) ethyl cyanide (ii) ethanol (iii) propane(iv) n-butane (v) tetraethyl lead.vi. Discuss the preparation and reactivity of Grignard’s reagent.vii. What are the amines? Give its nomenclature.viii. What are the main features which increase the basicity of amine?ix. Amides are reduced by LiAlH4. Give mechanism.x. What are the diazonium salts? How they can be prepared? Give their reactions?199
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Textbook ofChemistryGrade 12
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OUR MOTTOStandards Outcomes Access
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CONTENTSNo. Chapter Name P. No.1314
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13 s and p - Block ElementsP [Ne] 3
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913 s and p - Block Elements(b) Phy
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13 s and p - Block ElementsArgonArg
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13 s and p - Block ElementsSulphurS
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13 s and p - Block ElementsThose ox
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13 s and p - Block Elements17Fig 13
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13 s and p - Block ElementsWith hot
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13 s and p - Block ElementsChlorine
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13 s and p - Block ElementsThe alum
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13 s and p - Block Elements13.1.6 H
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13 s and p - Block ElementsNotice t
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13 s and p - Block ElementsThe tabl
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13 s and p - Block ElementsIf the t
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13 s and p - Block ElementsRb red (
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I2I1 + I213 s and p - Block Element
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13 s and p - Block ElementsCalcium,
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13 s and p - Block ElementsThis is
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13 s and p - Block Elements9. Behav
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13 s and p - Block Elements13.4.2 T
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13 s and p - Block ElementsThis fir
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13 s and p - Block ElementsWe know
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13 s and p - Block ElementsCarbon a
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13 s and p - Block Elements51Quick
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13 s and p - Block ElementsIt has b
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13 s and p - Block Elements55Quick
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13 s and p - Block ElementsOpen-Hea
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13 s and p - Block Elementstoxicity
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13 s and p - Block Elementsviii. Wh
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13 s and p - Block Elements(c) Why
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14 d and f - block elements transit
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v14 d and f - block elements transi
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15 Organic Compounds15.1 SOURCES OF
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15 Organic Compounds1053. Melting a
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15 Organic Compounds107Quick Quiz1.
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15 Organic CompoundsNitrileMethyle
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15 Organic Compounds6. There is a g
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15 Organic Compounds113C) Detection
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15 Organic Compounds115iii. Which o
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16 Hydrocarbons11716.1 TYPES OF HYD
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16 Hydrocarbons119orororQuick Quiz1
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16 Hydrocarbons1213-Ethyl-2,3,5-tri
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16 Hydrocarbons123(b) Alkanes are n
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16 Hydrocarbons125II. CycloalkanesA
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16 Hydrocarbons127shown again below
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16 Hydrocarbons129Activity1. Name t
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16 Hydrocarbons1312. Dehydrohalogen
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16 Hydrocarbons133HydrationAddition
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16 Hydrocarbons135PolymerizationPol
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16 Hydrocarbons137benzeneconjugated
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16 Hydrocarbons13916.6.2 Carbon-Bas
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16 Hydrocarbons141(+)Tartaric Acid:
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16 Hydrocarbons143No geometrical is
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16 Hydrocarbons1451) MetamerismThis
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