Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

Give the monosubstituon product in the following reactions :

Answer»

Solution :

`("Hyperconjugative effect of"-CH_(3) "is more than that of "-C_(2)H_(5) "GROUP").`
Discussion
2.

Give the molecular formula, strucutral formula full structure and line structure of (i) 2-Methyl-pentane (ii) 3-Ethylpentane and (iii) 2,3-dimethyl butane.

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Solution :(i) 2-Methyl PENTANE :
(a) Molecular formula : `C_(6)H_(14)`
(b) STRUCTURAL formula : `CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(2)-CH_(3)`
(c) Hole structure with his bonds :

(d) LIne structure :
(ii) 3-Ethylpentane :
(a) molecular formula : `C_(5)H_(14)`
(b) Structral formula :
`CH_(3)-CH_(2)-overset(CH_(3))overset(|)(CH) - CH_(2)-CH_(3)`
(c) Hole structure with his bonds
`H-underset(H)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)underset(H-C-H)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)overset(H)overset(|)(C)-H`
(d) Line structure :
(iii) 2, 3-Dimethyl butane :
(a) Molecular formula : `C_(6)H_(14)`
(b) Structural formula :
`CH_(3)-underset(CH_(3))underset(|)(CH)-underset(CH_(3))underset(|)(CH)-CH_(3)`
(c) Hole structure with his bonds :
`H-underset(H)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)underset(H-C-H)underset(|)overset(H)overset(|)(C)-underset(H)underset(|)overset(H)overset(|)overset(H-C-H)overset(|)(C)-underset(H)underset(|)overset(H)overset(|)(C)-H`
(d) Line structure :
Discussion
3.

Give the method of three-dimensional representation of organic molecule

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Solution :(a) Dashed-wedge formula
(b) Method of PREPARATION of molecular model (i) Framework model (II) Ball- and -stick model and (iii) Space filling model.
Discussion
4.

Give the measureent of amount in chemistry.

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SOLUTION :`10^(-31)` to `10^(+23)`
Discussion
5.

Give the major products of following reaction :

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ANSWER :`(##RES_CHM_ORM_IV_E01_010_A01##)`
Discussion
6.

Give the main feature of Lewis approach of chemical bonding.

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Solution :valency SHELL can accommodate 8 ELECTRONS called octet. It REPRESENTS stable electronic ARRANGEMENT. Elements: TRY to attain octet configuration to attain stability by gaining, losing or sharing electrons
Discussion
7.

Give the main feature of Kossel's explanation of chemical bonding.

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Solution :valency SHELL can accommodate 8 electrons called octet. It REPRESENTS STABLE electronic arrangement. Elements try to ATTAIN octet configuration to attain stability by gaining, losing or sharing electrons.
Discussion
8.

Give the IUPAC nomenclature of following structures with its proper rule of IUPAC. (a) (CH_(3))_(2)CH-CH_(2)-CH(CH_(2)CH_(3))_(2) (b) CH_(3)-CH_(2)-CH_(2)CH[CH(CH_(3))_(2)]-CH(CH_(3))-C(CH_(2)-CH_(3))_(3)

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Solution :(a) Expand structure of `(CH_(3))_(2)CH-CH_(2)-CH(CH_(2)CH_(3))_(2)` :
`{:(""CH_(3)""CH_(2)-CH_(3)),("|""|"),(CH_(3)-CH-CH_(2)-CH-CH_(2)-CH_(3)),("4-ethyl-2-methylhexane"):}`
Rule : (i) Long chain is of 6-CARBON atom.
(ii) As per English alphanet ethyl substitution is written first than methyl.
(iii) Staring from left side carbon giving number-1, substitution has 2 for methyl and 4 for ethyl.
(iv) Giving numbering from right side substitution has 3 for ethyl and 5 for methyl. Considering left side numbering, IUPAC NOMENCLATURE is :
`{:(""CH_(3)""CH_(2)-CH_(3)),("|""|"),(overset(1)(C)H_(3)-""^(2)CH-overset(3)(CH_(2))-""^(4)CH-overset(5)(C)H_(2)-overset(6)(C)H_(3)):}`
(b)Expand structure of `CH_(3) - CH_(2)-CH_(2)CH[CH(CH_(3))_(2)]-CH(CH_(3))-C(CH_(2)-CH_(3))_(3)` :

Rule : (i) Long chain carbon atom is of 8 carbons.
(ii) Substitutions are DIETHYL, methyl `(CH_(3))` and isopropyls `(-CH(CH_(3))_(2))`. As per the alphabet, it is written as diethyl, isopropyl methyl octane.
(iii) Giving numbering for left side carbon as 1. Substitution has numbering as follows : 6,6-diethyl-4-isopropyl-5-methyl
(iv) Giving numbering from light carbon as 1, substitution number is given as follows : 3,3-diethyl-5-isopropyl-4-methyl
Numberinggivenfromrightsidecarbon-1andsubstitutionhas leastnumberIUPACnomenclatureandstructureis as follows
Discussion
9.

Give the IUPAC names or write the structure, as appropriate, of the following compounds: (i) HO_(2)C CH_(2)underset(NO_(2))underset(|)(CH)CHCO_(2)H (ii) Benzoic acid (iii) CH_(3)underset(NH_(2))underset(|)(CH)-overset(O)overset(||)(C)-O^(-)Na^(+) (iv) 4-hydroxypentanoic acid (v) (vi) 2,2-Dibromohexanedioc acid (vii) (viii) 4-(1,1-Dimethylwthyl)benzoic acid (ix) HCOONH_(4) (x)underset(Br)underset(|)CH_2-undersetunderset(Br)(|)(CH)-COOK (xi) alpha,beta-Dimethylvaleric acid (xii) Phthalic acid (xiii) Isophthalic acid (xiv) Terephthalic acid Strategy: We need prior knowledge to write down the structures of specificnames The class suffix of caroboxylic acids is -oic acid and the carnoxyl C atom is numbered as 1.

Answer»

SOLUTION :(i) `2`-Nitrobutanedioic acid
(ii) Benzencarboxylic acid
(III) Sodium `2`-aminopropanaoate
(iv) `CH_(3)overset(OH)overset(|)(CH)CH_(2)CH_(2)CO_(2)H`
(v) `5`-Bromo-`3`-chloroheptanoic acid
(vi) `HOOC CH_(2)CH_(2)CH_(2)-underset(Br)underset(|)overset(Br)overset(|)(C)-CO_(2)H`
(vii) `4,4`-Dimethyl cyclohexane carboxyclic acid
(viii)
(IX) Ammonium formate
(x) Postanssium `2,3`-dibromopropanoate
(xi)

(xiii)
(xiv)
Discussion
10.

Give the Kp expression of the equation H_(2)(g)+I_(2)(g)hArr2HI(g).

Answer»


ANSWER :`K_(p)=(P_(HI)^(2))/(P_(H_(2)).P_(I_(2)))`
Discussion
11.

Give the Lewis dot structure of HNO_(3).

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SOLUTION :SEE the TEXTBOOK
Discussion
12.

Give the IUPAC names of the following : (i) CH_(3)-CH=CH-CH=CH_(2) (ii) CH_(3)-CH_(2)-CHO (iii) CH-overset(O)overset(||)(C)-CH_(2)-CH_(3)

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SOLUTION :(i) PENTA 1,3-diene (II) PROPANAL
(III) Butan-2-one
Discussion
13.

Give the IUPAC names of the following compounds: (i) o-Bromobenzaldehyde (ii) Diethyl ketone (iii) 4-Hydroxy-3-methoxybenzaldehyde (iv) (v) Propargyladehyde (vi) (vii) ClCH_(2)CH_(2)CH_(2)CH_(2)-overset(O)overset(||)(CH) (viii) Phenylacetadehyde (ix) (x) Allymethyl ketone (xii) Salicyladehyde (o-hydroxybenzaldehyde) (xiii) p-nitrobenzaldehyde (xiv) Isopropyl methyl ketone (xv) Benzyl methyl ketone (xvi) Strategy: The IUPAC names of aldehydes and ketones are derived from the name of the parent hydrocarbon. The suffix-al is added to the characteristic stem in aldehydes while the suffix -one is added in ketones

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Solution :(i)
(ii) `OVERSET(1)(CH_(2))overset(2)(CH_(2))underset("Pentan-3-one")(underset(O)underset(||)overset(3)(C)overset(4)(CH_(2)overset(CH_(3))`
(iii)
(iv) `4`-chloro-`6`-methylheptan-`3`-one
(v) `HCunderset("propynal")(-=overset(O)overset(||)C CH)`
(vi) `5`-Bromo-`3`-ethylnycycloheptanone
(vii) `5`-Chloropentanal
(VIII) `C_(6)H_(5)underset("Phenylethanal")(CH_(2)-overset(O)overset(||)(C)-H)`
(ix) `2`- Naphthalenecarbaldehyde
(X) `CH_(3)-underset(("not pent-1-en-4-one"))underset("Pent-4-en-one")(underset(O)underset(||)(C)-CH_(2)-CH=CH_(2))`
(xi)
(xii)
(xiii)
(xiv) `CH_(3)-underset("3-Methylbutanone")(underset(CH_(3))underset(|)overset(3)(CH)-underset(O)underset(||)overset(2)(C)-overset(1)(CH_(3)))`
(xv)
(xvi) `4`-Methylpheny-`3`-nitrophenylmethanone
Discussion
14.

Give the IUPAC names of the following compounds (i) CH_(3)CH(Cl)CH(Br)CH_(3) (ii) CHF_(2)CBrClF (iii) ClCH_(3)C-=C CH_(2)Br (iv) (C Cl_(3))_(3) C Cl (v) CH_(3)C(p-ClC_(6)H_(4))_(2)CH(Br)CH_(3) (vi) (CH_(3))_(3)C CH=C(Cl)C_(6)H_(4)I-p

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Solution :(i) `overset(4)CH_(3)UNDERSET(CL)underset(|)overset(3)CH-underset(Br)underset(|)overset(2)CH-overset(1)CH_(3)` :2-Bromo-3-chlorobutane
(ii) `F_(2)CH-underset(Cl)underset(|)overset(F)overset(|)C-Br` : 1-Bromo-1-chloro-1,2,2-trifluoroethane
(iii) `Cloverset(4)CH_(2)overset(3)C-=overset(2)C overset(1)CH_(2)Br` : 1-Bromo-4-chlorobut-2-yne
(iv) `overset(3)C Cl_(3)-underset(overset(1)C Cl_(3))underset(|)overset(C Cl_(3))overset(2|)C-Cl` : 2-(Trichloromethyl)-1,1,1,2,3,3,3-heptachloropropane
(v) `overset(4)CH_(3)underset((p-ClC_(6)H_(4))_(2))underset(|)overset(3)C-overset(Br)overset(2|) CH-overset(1)CH_(3)` : 2-Bromo-3,3-bis(4-chlorophenyl)butane
(vi) `(overset(4)CH_(3))_(3)overset(3)C overset(2)CH=underset(Cl)underset(|)overset(1)C(C_(6)H_(4)I-p)` :1-Chloro-1-(4-iodophenyl)-3,3-dimethylbut-1-ene
Discussion
15.

Give the IUPAC names of the following compounds. H_(3)C-CH_(2)-COOH

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SOLUTION :IUPAC NAMES- PROPANOIC ACID
Discussion
16.

Give the IUPAC names of the following compounds: Cl_(2)CHCH_(2)OH

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Solution :
IUPAC name :1 phenylpropane or n-propyl benzene
therefore `overset(5)(CH_(3)) overset(4)(CH) underset(underset(CH_(3))(|))overset(4)(CH) overset(3)(CH - overset(2)(CH_(2)) - overset(1)(CN)` IUPAC name: 3-Methylpentanentrile
therefore `underset(1)(C )H_(3)- underset(2)overset(overset(CH_(3))(|))(CH)- underset(3)(CH_(2))- underset(4)(CH_(2))-underset(underset(CH_(3))(|5))(CH)-overset(6)(CH)_(2)-underset(7)(C )H_(3)` IUPAC name: 2, 5-dimethylheptane
therefore `CH_(3)- CH_(2) - underset(underset(Br)(|))overset(overset(CL)(|))(C )-CH_(2)-CH_(2)-CH_(2)-CH_(3)`
IUPAC name: 3-bromo-3-chloroheptane
therefore `overset(3)(CH_(2))Cl -overset(2)(C )H_(2)- overset(1)(C )HO` IUPAC name: 3-chloropropanal
(f) `Cl_(2)CHCH_(2)OH` therefore `H- underset(underset(Cl)(|))overset(overset(Cl)(|))(C^(2))-overset(1)(C )H_(2)OH` IUPAC name: 2, 2-dichloroethanol
Discussion
17.

Give the IUPAC names of the following alkynes :CH_3 - C -= C - oversetunderset(|)(CH_3)(C)H - CH_2 - CH_2 CH_3

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SOLUTION : 4-methylhept-2-yne
Discussion
18.

Give the IUPAC names of the following alkynes :CH_3 - C -= C - oversetunderset(|)(C_2H_5)(C)H - CH_3

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SOLUTION :4-methylhex-2-yne
Discussion
19.

Give the IUPAC names of the following alkynes : CH -= C - CH_2 - oversetunderset(|)(CH_3)(C)H - C -= CH

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SOLUTION :3-methylhexa-1,5-diene
Discussion
20.

Give the IUPAC names of the following :

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SOLUTION :(i) Bicyclo [2.2.0] hexane
(ii) Bicyclo [4.4.0] DECANE
(iii) Bicyclo [1.1.1] PENTANE
(iv) Bicyclo [2.2.1] hexane
(v) SPIRO [2.5]OCTANE
(vi) Bicyclo [3.2.1] octane
(vii) 1,7,7-Trimethylbicyclo [2.2.1] heptane-2-one
(viii) 1,1',2',1''-Tercyclopropane
(ix) Bicyclo [3.1.0] hexane
(x) Spiro [3,5] nonane.
Discussion
21.

Give the IUPAC names of the following :

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Solution :(i) 4-Cyclopentylbut-1-ene, (ii) Cyclohexylcyclohexane
(III) 2-Hydroxycyclohexanecarbonyl CHLORIDE, (iv) 2-(2-Methylcyclobut-1-enyl) ETHANAL
(v) 4-Cyclobutylbut-3-en-2-one, (vi) 2-Ethyl-1, 4-dimethylcyclohexane
(vii) 1-(4-hydroxycyclohexyl) pentane-1, 5-diol, (viii) 2-Isoproyl-5-methylcyclohexanol
(ix) 4-(4-Nitrocyclohexyl) benzaldehyde, (X) 2-Nitrocyclohexanecarboxamide.
Discussion
22.

Give the IUPAC names of the following :

Answer»

SOLUTION :(i) 4-Cyclopentylbut-1-ene
(ii) Cyclohexylcycohexane
(iii) 2-Hydroxycyclohexanecarbonyl chloride
(iv) 2-(2-Methylcyclobut-1-enyl) ethanal
(v) 4-Cyclobutylbut-3-en-2one
(vi) 2-Ethyl-1,4-dimethylcyclohexane
(VII) 1-(4-hydroxycyhlohexyl)pentane-1,5-diol
(VIII) 2-Isopropyl-5-methylcyclohexanol
(ix) 4-(4-Nitrocyclohexyl) BENZALDEHYDE
(x) 2-Nitrocyclohexanecarboxamide.
Discussion
23.

Give the IUPAC names for the following (i) CH_(2)=CH-underset(CH_(3))underset(|)CH-CH_(3) (ii) (CH_(3))_(2)CH-CH=CH-CH_(2)-underset(CH_(2)CH_(3))underset(|)underset(H_(3)C-CH-CH)underset(||)(CH_(2) (iii) (iv) CH_(2) = C(CH_(2)CH_(2)CH_(3))_(2) (v) (vi) ( vii)CH_2=CH-CH_2oversetoverset(CH_3)(|)CHCH_3 (viii) CH_(2)=CH-underset(CH_(2)CH_(2)CH_(3))underset(|)(CH)(CH_(2))_(4)CH_(3) (ix) CH_(3)CH_(2)CH_(2)CH_(2)-overset(H_(3)C)overset(|)(C )=overset(CH_(2)CH_(3))overset(|)(C(CH_(2))_(3)CH_(3) (x) (xi) (xii) (xiii) (xiv) Tetramethylethlene (xv) (xvi) Strategy: Select the longest possible continuous carbon chain or ring containing the largest number of double bonds and carrying the maximum number of side chains. Change the suffix of the parent alkane from -ane to -ene.The parent chain is numbered from the end closer to C = C, whoese position is indicated by assigning the lower possible number to the first doubly bonded C. Subsitituents are designated in exactly the same way as done for branched alkanes.

Answer»

Solution :(i) `3`-Methylbut- `1`-ene
(ii) `2, 8`-Dimethyldeca- `3,6`-diene.
(iii) OCTA- `1,3,5,7`-tetraene
(iv) `2-(1`-Prophyl) pent -`1`-ene
(v) `4`-Enthyl-`2, 6`-dimethyldec-`4`-ene
(vi) `3-n`-Prophylpenta-`1, 4`-diene
(vii) `4`-methylpent-`1`-ene
(viii) `3`-prophyloct-`1`ene
(ix) `5`-ETHYL-`6`-methyldec-`5`-ene
(x) `2,3`-Dimethylhept-`2`-ene
(xi) trans-Hept-`3`-ene
(xii) `1,3`-Dimethylcyclohexene
(xiii) `3`-Prophylhept-`1`-ene
(xiv) `(CH_(3))_(2)C = C(CH_(3))_(2), 2,3`-Dimethylbut-`2`-ene
(xv)`4`-Ethyl-`2`-methylhex-`1`-ene
(xvi) `3,5`-Dimethylcyclohexene
Discussion
24.

Give the IUPAC names for the following ethers: (i) tert-Butylphenyl ether (ii) CH_(3)underset(OCH_(3))underset(|)(CH)CH_(2)CH_(2)CH_(3) (iii) (iv) sec-Butyl isopropyl ether (v) beta-Chloroethyl methyl ether (vi) Ethyl p-nitrophenyl ether (p-nitrophenetole) (vii) cyclohexy n-propyl ether (viii) Benzy vinyl ether (ix) Cyclopentyl t-butyl ether (x) (xi) overset(1)(CH_(3))underset(OH)underset(|)overset(2)(CH)CH_(2)CH_(2)overset(5)(CH_(2))OCH_(3) (xii) 3-Cyclohexenylisopropyl ether (xiii) (xiv) Strategy: In the IUPAC system, ethers are named as alkoxyalanes. To write the IUPAC names of the commonly named ethers, first with the structure.

Answer»

SOLUTION :(i) `C_(6)H_(5)Ooverset(2)-underset(("tert-Butoxy benzene"))(underset(.^(3)CH_(3))underset(|)overset(.^(1)CH_(3))overset(|)(C)-CH_(3))`
(ii) `2`-METHYLPENTANE
(III) `1`-Ethoxy-`4`-methylbenzene
(iv) `overset(2)(CH_(3))-underset(CH_(3))underset(|)overset(1)(CH)-O-underset(2-(1-"Methylmethoxy")but an )underset(2-"Isopropoxybutane")(underset(1CH_(3))underset(|)overset(2)(CH)-overset(3)(CH_(2))-overset(4)(CH_(3))`
(v) `Cl overset(1)CH_(2)overset(2)CH_(2)CH_(3)` , 1-Choloro-2-methoxyethane
(vi)
(vii)
(viii) `H_(2)C=OH-O-CH_(2)CH_(6)H_(5)`
(ix)
(x) `1,3`-Dimethoxybenzene
(xi) `5`-Methoxypentan-`2-ol`
(xii)
(xiii) Phenyloxirane
(xiv) Ethyloxirane [ `1`-epoxybutane or `1,2`-Buteneoxide]
Discussion
25.

Give the IUPAC name of Cl_2CHCH_2OH

Answer»


ANSWER :2,2-Dichloroethanol
Discussion
26.

Give the IUPAC name on ozonolysis of following : (i) 3,4-Dimethyl hept-3-ene (ii) 2-Methyl-but-2-ene (iii) 2-Ethyl-2-methyl-pent-2-ene (iv) Hex-1-ene (v) Hex-3-ene

Answer»

SOLUTION :
Discussion
27.

Give the IUPAC name of the saturated hydrocarbon having the following carbon skeleton. {:(C-C-C-C-C-C-C),("|""|""|""|"),(C-C-C""C""C" "C):}

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SOLUTION :5-Ethyl-2,3,4-trimethyloctane
Discussion
28.

Give the IUPAC name of the product formed when isobutylene is treated with a few drops of concentrated sulphuric acid.

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SOLUTION :This follows Markovnikov RULE to give 2-methyl-2-propanol as major PRODUCT.
Discussion
29.

Give the IUPAC name of the hydrocarbon represented by Swastik sign.

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SOLUTION :3, 3 Diethylpentane.
Discussion
30.

Give the IUPAC name of the following compounds. (i) H_(3)C-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(2)-CH_(2)OH (ii) H_(3)C-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(2)OH (iii) CH_(3)-CH_(2)-underset(O)underset(||)C-OH

Answer»

Solution :(i) 4-methylpentan-b-ol (II) 2, 2-dimethylpropan-1-ol (III) Propanoic ACID
Discussion
31.

Give the IUPAC name of the following compounds

Answer»

SOLUTION :
Discussion
32.

Give the IUPAC name of the following compounds.

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ANSWER :(i) Propyle BENZENE (II) 3 Chloro PROPENAL
Discussion
33.

Give the IUPAC name of the following compound

Answer»

5, 6-diethyl-2-9 -dimethyl-dec-4-ene
5, 6-butyl, 5-ethyl-3-methyl-oct-4-ene
2, 4-diethyl-2, 8-dimethyl-non-4-ene
5, 6 diethyl-2, 9-dimethyl-dec-6-ene

Answer :A
Discussion
34.

Give the IUPAC name of the following alkenes :(CH_3)_2C = C(CH_3)_2

Answer»

SOLUTION :2, 3-dimethylbut-2-enel
Discussion
35.

Give the IUPAC name of the following alkenes :CH_3 - oversetunderset(|)(CH_3)(C)H - oversetunderset(|)(CH_3)(C) = CH - oversetunderset(|)(CH_3)(C)H - CH_3

Answer»

SOLUTION :2,3,5-trimethylhex-3-ene
Discussion
36.

The IUPAC name of the compound CH_(2)=CH-CH(CH_(3))_(2) is

Answer»

SOLUTION :3-Methylbut-1-ene
Discussion
37.

Give the IUPAC name of the following alkenes :CH_2 = CH - CH = CH_2

Answer»

SOLUTION : Buta-1, 3-diene
Discussion
38.

Give the IUPAC name of N-= C-CH_(2)- underset(underset(C -=N)(|))(C H)-CH_(2)- C -=N

Answer»

3-cynopentane-1, 5-dinitrile
1, 2, 4-tricynopropane
1, 2, 3-tripropanenitrile
3-cynopentane-1, 3-dinitrile

Answer :A
Discussion
39.

Give the IUPAC name of (i) CH_(3)-CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(2)-CN (ii) CH_(3)-underset(CONH_(3))underset(|)(CH)-CH-CH_(3) (iii)CH_(3)-underset (OH)underset(|)(CH)-CH_(2)-CH-CH-CH_(3)

Answer»

SOLUTION :(i) 4-methylhexanenitrite (II) 2-methyl but-3-en AMIDE (III) Hex-4-en-2-ol
Discussion
40.

Give the IUPAC name of (i) CH_(3)-CH_(2)-CH_(2)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3) (ii) CH_(3)-underset(CHO)underset(|)(CH)-CH_(2)-CHO (iii) CH_(3)-CH_(2)-underset(COOH)underset(|)(CH)-CH-CH_(3)

Answer»

SOLUTION :(i) 3-methylhexane (II) 2-methylbutanul (III) 2-ethylbut-3-enoic ACID
Discussion
41.

Give the IUPAC name of each of the following: (iv)

Answer»


ANSWER :Pent-4-en-2-ol
Discussion
42.

Give the IUPAC name of the following:CH-=C-CH=C=CH_2

Answer»


ANSWER :Hexa-1,3-dien-5-yne
Discussion
43.

Give the IUPAC name of [(CH_(3))_(3)C]_(4)C

Answer»

Tetra neo BUTYL methane
3, 3-bis (1, 1-dimethylethyl) 2, 2, 4, 4-tetramethylpentane
Tetra-tersorybutylmethene
None of these

Answer :B
Discussion
44.

Give the IUPAC name of CH_(3)- underset(underset(OCH_(3))(|))(C H)- underset(underset(O)(||))(C )- underset(underset(OCH_(2)CH_(3))(|))(CH)-CH_(3)

Answer»

4-methoxy-2-ethoxy-2-one
2-ethoxy-4-methoxypentane-2-one
4-methoxy-2-ethoxypentane-3-one
2-methoxy-4-ethoxypentane-3-one

Answer :D
Discussion
45.

Give the IUPAC name of CH_(3)- underset(underset(CH_(3))(|))(CH)- CH_(2) underset(underset(CH_(3))(|))(CH)- CHOHCH_(3)

Answer»

2-hydroxy-3, 5-dimethylhexane
3, 5-dimethylhexane-2-ol
3, 5-dimethylhexane-2
2, 4-dimethyl-hexane-5-ol

Answer :B
Discussion
46.

Give the IUPAC name of an isomer of hexane which has only two differentsets of structurally equivalent hydrogen atoms.

Answer»

SOLUTION :`underset"2,3-Dimethylbutane"(CH_3-undersetunderset(CH_3)|CH-undersetunderset(CH_3)|CH-CH_3)`
It has 12 EQUIVALENT `1^@` HYDROGENS and 2 equivalent `3^@` hydrogens.
Discussion
47.

Give the IUPAC name of alkene, product obtained on ozonolysis. (i) 2 moler propanone (Acetone) (ii) Ethanal and propanal (iii) Ethanal and pentane-3-one (iv) Ethanal and butanal (v) Propanone and butane-2-one

Answer»

Solution :(i) Product :
`underset(""uarr "ozonolysis")(underset("Acetone")(CH_(3)-overset(O)overset(||)(C)-CH_(3))+underset("Acetone")(CH_(3)-overset(O)overset(||)(C)-CH_(3)))`
Structure of alkene : `CH_(3)-underset(CH_(3))underset(|)(C)=underset(CH_(3))underset(|)(C)-CH_(3)`
IUPAC name : 2, 3-Dimethyl-But-2-ene
(II) Product : `underset(uarr "ozonolysis")underset("Ethanol")(CH_(3)CHO)+underset("PROPANAL")(CH_(3)CH_(2)CHO)`
Structure of alkene : `CH_(3)CH=CHCH_(2)CH_(3)`
IUPAC name : 2-Pentane
(III) Product : `underset("Ethanol")(CH_(2)CHO) + underset("Pentane-3-one")(CH_(3)CH_(2)COCH_(2)CH_(3))`
`uarr "Ozonolysis " O_(3), Zn, H_(2)O, -H_(2)O_(2)`
Structure of alkene : `{:(CH_(3)CH=C-CH_(2)CH_(3)),("|"),(""CH_(2)CH_(3)):}`
IUPAC name : 3-ethyl-pent-2-ene
(iv) Product : `underset("Ethanal")(CH_(3)CHO) + underset("Butanal")(CH_(3)CH_(2)CH_(2)CHO)`
`uarr` Oxonolysis (i) `O_(3)`, (ii) `Zn, H_(2)O, -H_(2)O`
Name of alkene : `CH_(3)CH=CHCH_(2)CH_(2)CH_(3)`
IUPAC Name : 2-Hexene
(v) product : `[["propanone + Butane-2-one"],[CH_(3)COCH_(3)+CH_(3)COCH_(2)CH_(3)]]`
`"Ozonolysis " uarr`
Structure of alkene :`CH_(3)-underset(CH_(3))underset(|)(C)=underset(CH_(3))underset(|)(C)-CH_(2)CH_(3)`
IUPAC Name : 2,3-Dimethyl-pent-3-ene
Discussion
48.

Give the IUPAC name of

Answer»


ANSWER :3-Methylpentanenitrile
Discussion
49.

Give the IUPAC name of

Answer»

3-ethyl-4, 4-dimethylhetane
4-ethyl-5, 5-dimethyldecane
5-ethyl-4, 4-dimethyloctane
3-ethyl-4, 4-dimethylnonane

Solution :`UNDERSET("4-ethyl-5, 5-dimethyldecane")(H_(3)C-CH_(2)-CH_(2)-CH_(2)-CH_(2)-underset(underset(CH_(3))(|))overset(overset(CH_(3))(|))(C )- underset(underset(CH_(2)-CH_(3))(|))(CH)-CH_(2)-CH_(2)-CH_(3))`
Discussion
50.

Give the IUPAC name of

Answer»

2, 2, 8, 8, 9-pentamethyldecane
2-isopropyl, 2-8,8-tri methylhexane
2, 3, 3, 7, 7-panta methyloctane
2, 2, 6, 6, 8-panta methylnonane

Solution :
Discussion