633 + Interview Questions in ORGANIC-CHEMISTRY IN GENERAL AWARENESS Page 6 InterviewSolution

251.	Sulphur compounds in crude oil can be removed by usingA. copper oxideB. alumiaC. iron oxideD. magneisum oxide
Answer» Sulphur compounds in crude oil can be removed by using Copper oxide

Discussion

252.	Petroleum franction of which of thr following compositions can be used as a lubricating oil ?A. `C_5-C_7`B. `C_(10)-C_(16)`C. `C_(20)-C_(24)`D. `C_(30)-C_(40)`
Answer» The composition of lubricating oil is hydrocarbons`C_(20)-C_(24)` due to high boiling point

Discussion

253.	The IUPAC name for the compound A. Propionic anhydrideB. Dipropionic anhydrideC. Ethoxypropanoic acidD. Propanoic anhydride.
Answer» Correct Answer - D Factual question.

Discussion

254.	The IUPAC name of compound `CH_(3)OCH_(2)CH_(2)CH_(2)OCH_(2)CH_(3)` isA. 1-Ethoxy-3-methoxypropaneB. Ethoxy propaneoxymethaneC. 3-Ethoxy-1-methoxypropaneD. 2, 5-Dioxyhexane
Answer» Correct Answer - A `underset("1-Ethoxy-3-methoxypropane")underset()(CH_(3)-O-overset(3)CH_(2)-overset(2)CH_(2)-overset(1)CH_(2)-O-CH_(2)-CH_(3))`

Discussion

255.	The correct IUPAC name of `CH_(3)-overset(O)overset(\|\|)C-OCOCH_(3)`isA. Methyl ethanoateB. Acetato ethanoateC. Ethanoic anhydrideD. Ethanoyl ethanoate.
Answer» Correct Answer - C `underset("Ethanoic anhydride")underset()(CH_(3)-overset(O)overset(\|\|)C-O-overset(O)overset(\|\|)C-CH_(3))`

Discussion

256.	The IUPAC name of `HOOC-CH=CH-CH=CH-COOH` isA. Hexa-2,4-dienedioic acidB. 2,4-Dihexene-1,6-dioic acidC. Hexa-2,4-diene-1,6-dioic acidD. All the above
Answer» Correct Answer - A `underset("Eexa-2, 4-diene-1, 6-dioic acid")underset()(HOOoverset(6)C-overset(5)CH=overset(4)CH-overset(3)CH=overset(2)CH-overset(1)COOH)`

Discussion

257.	The correct IUPAC name of `HOOC-underset(COOH)underset(\|)(CH)-COOH` isA. TricarboxymethaneB. Propanetrioic acidC. Tributanoic acidD. Methanetricarboxylic acid,
Answer» Correct Answer - D `underset("Methanetricarboxylic acid")underset()(HOOC-overset(COOH)overset(\|)(CH)-COOH)`

Discussion

258.	Give the IUPAC name of the coumpound `CH_(2)=CH-CH(CH_(3))_(2)`
Answer» Correct Answer - 3-Methylbut-1-ene

Discussion

259.	Which of the following is unsaturated compound?A. `C_(6)H_(14)`B. `C_(4)H_(8)`C. `C_(3)H_(7)OH`D. `CH_(3)OH`
Answer» Correct Answer - B

Discussion

260.	Which of the following is an unsaturated compound ?A. `C_(6)H_(14)`B. `C_(4)H_(8)`C. `C_(3)H_(7)OH`D. `CH_(3)OH`
Answer» Correct Answer - B `C_(4)H_(8)` is an unsaturated compound

Discussion

261.	The IUPAC name of the compound `CH_(2) = CH - CH(CH_(3))_(2)` is:A. 1, 1-Dimethylprop -2-eneB. 3-Methylbut-1-eneC. 2-VinylpropaneD. 1-Isopropylethylene
Answer» Correct Answer - B `underset("3-Methylbut-1-ene")(overset(1)(C)H_(2)=overset(2)(C)H-underset(CH_(3))underset(\|)overset(3)(CH)-overset(4)(C)H_(3))`

Discussion

262.	In which of the following species hyperconjugation in possible?A. `CH_(3)-overset(-)(C)H_(2)`B. `C_(6)H_(5)-CH_(3)`C. `CH_(2)=CH_(2)`D. `CH_(3)-underset(CH_(3))underset(\|)overset(CH_(3))overset(\|)(C)-CH=CH_(2)`
Answer» Correct Answer - B For hyperconjugation `alpha`-carbon with respect to `sp^(2)` hybridised carbon should have at least one hydrogen.

Discussion

263.	Amongst the following the total number of nucleophiles is : `SO_(3), NH_(2)^(-), R^(-), H_(2)O, OR^(-), ROH, AlCl_(3), H^(-), BF_(3)`.
Answer» Correct Answer - 6 Six, i.e., `NH_(2)^(-), R^(-), H_(2)overset(..)(O): , :underset(..)overset(..)(O)R^(-) , Runderset(..)overset(..)(O)H, H^(-)`

Discussion

264.	During hearing a court case, the judge suspected that some changes in the original documents has been deliberately made. He asked the forensic department to check the ink used at two different places. After reading the above passage, answer the following questions : (i) What technique do you think can be ued to ascertain whether the ink used at two places was the same or different ? (ii) What is the principle of this technique appiled ?
Answer» (i) This layer chromatography (TLC) can be used to identify the components in a small sample such as ink. (ii) This technique is based upon the principle of adsorption. To carry out this technique, a glass or a plastic side coated with a suitable adsorbent usually silica gel is taken. Two pencil lines are drawn on this plate-one little above the botton and the other near the top of the plate. With the help of a suitable solvent, the samples of ink used at two different places are applied on the pencil line near the botom of the TLC plate little away from each other. The plate is then placed in a closed jar containing a suitable solvent and allowed to stay till the solvent reaches the top pencil line. The plate is then removed from the jar and dried in air. If both the samplex of ink show a single spot on the plate at the same height from the bottom then the same ink is used and if single spots are either seen at different heights or one sample shows a single spot while the other sample shows two or more spots, then different inks are used.

Discussion

265.	The most unlikely representation of resonance structure of p-nitrophenoxide isA. B. C. D.
Answer» Correct Answer - C Nitrogen in option (c) has two double bonds and one single bond. Therefore, it has `10 (2 xx 4 + 1 xx 2)` electrons in the valence shell. This is against octet rule and hence resonance structure (c) is most unlikely.

Discussion

266.	What is the type of hybridization in the following compounds (a) `CH_(3)Cl`, (b) `(CH_(3))_(2)CO`, (c) `CH_(3)CN` (d) `HCONH_(2)`, (e) `CH_(3)CH = CHCN`
Answer» Write the partly condensed formulae of the above compounds and indicate the type of hybridization on each carbon. (a) `overset(sp^(3))(CH_(3))-Cl` (b) `overset(sp^(3))(CH_(3))-underset(O)underset(\|\|)overset(sp^(2))(C)-overset(sp^(3))(CH_(3))` (c) `overset(sp^(3))(CH_(3))-overset(sp)(C)-=N` (d) `H-underset(O)underset(\|\|)overset(sp^(2))(C)-NH_(2)` (e) `overset(sp^(3))(CH_(3))-overset(sp^(2))(CH)=overset(sp^(2))(CH)-overset(sp)(C)-= N`

Discussion

267.	In which of the following compounds the C-Cl bond ionisation shall give most stable carbonium ion ?A. B. C. D.
Answer» Correct Answer - D More stable the carbocation, more facile is C-Cl bond ionization. Now the stability of carbocations decreases in order : `(CH_(3))_(3)C^(+) gt C_(6)H_(5)CH_(2)^(+) gt (CH_(3))_(2)CH^(+) gt CH_(3)CH_(2)^(+)` Thus, option (d) is correct.

Discussion

268.	Select electrophiles out of the following : `H^(+), Na^(+), Cl^(-), C_(2)H_(5)OH, AlCl_(3), SO_(3), CN^(-), CH_(3)CH_(2)^(+), : C Cl_(2), R-X`
Answer» Electrophiles are : `H^(+), AlCl_(3), SO_(3), CH_(3)CH_(2)^(+), :C Cl_(2), R-X`. In `SO_(3), O = underset(+)overset(O)overset(\|\|)(S)-O^(-)`, S atom carries a positive charge and hence acts as an electrophile. In `AlCl_(3)`, Al atom has six and in : `C Cl_(2), C` atom has six electrons in the valence shell and hence each one of these needs two more electrons to complete their respective octets. As a result, both `AlCl_(3)` and `:C Cl_(2)` act as electrophiles. `overset(delta+)(R)-overset(delta-)(X)`, due to greater electronegativity of X, R carries a partial positive charge and hence acts as an electrophile. `Na^(+)` ion does not act as an electrophile even though it has +ve charge. The reason being that it has already an octet of electrons in the valence shell. Further, `Na^(+)` cannot expand its valence shell beyond 8 electrons since it does not have d-orbitals.

Discussion

269.	What is the type of hybridzation of each carbon in the following compounds? `CH_(3)Cl` (b) `(CH_(3))_(2)CO` (c ) `CH_(3)CN` (d) `HCONH_(2)` (e) `CH_(3)CH=CHCN`
Answer» `(a) sp^(3), (b) sp^(3), sp^(2), (c) sp^(3), sp, (d) sp^(2), (e) sp^(3), sp^(2), sp^(2), sp`

Discussion

270.	Resonance is not possible inA. B. C. D.
Answer» Correct Answer - B

Discussion

271.	Among the following , the least stable resonance structure isA. B. C. D.
Answer» Correct Answer - A Resonance structure (a) in which the positive charges are present on the adjacent atoms is expected to be least stable.

Discussion

272.	Structures and IUPAC names of some hydrocarbons are given below. Explain why the names given in the parenthesis are incorrect. (i) `{:(CH_(3)-CH-CH_(2)-CH_(2)-CH-CH-CH_(2)-CH_(3)),(" \|"" \|"" \|"),(" "CH_(3)" "CH_(3)" "CH_(3)),(" 2,5,6-Trimethyloctane"),(" (and not 3,4,7-Trimethyloctane)"):}` (ii) `{:(CH_(3)-CH_(2)-CH-CH_(2)-CH-CH_(2)-CH_(3)),(" \|"" \|"),(" "CH_(3)CH_(2)" "CH_(3)),(" 3-Ethyl-5-methylheptane"),(" (and not 5-Ethyl-3-methylheptane)"):}`
Answer» (i) The set of locants (2,5,6) is lower than the set of locants (3,5,7). (ii) When substituents are at equivalent positions, lowest locant is given to that substituents which comes first in the alphabetical order. Therefore, lower locant 3 is assigned to ethyl and higher locant 5 is assigned to methyl group.

Discussion

273.	The arrangement of `(CH_(3))_(3)C-,(CH_(3))_(2)CH-, CH_(3)CH_(2)-` when attached a benzene or an unsaturated group in increasing order of inductive effect is:A. `(CH_(3))_(3)C- lt(CH_(3))_(3)CH- ltCH_(3)CH_(2)-`B. `CH_(3)CH_(2)- lt(CH_(3))_(2)CH- lt(CH_(3))_(3)C-`C. `(CH_(3))_(2)CH- lt(CH_(3))_(3)C- ltCH_(3)CH_(2)-`D. `(CH_(3))_(3)C- ltCH_(3)CH_(2)- lt(CH_(3))_(2)CH-`
Answer» Correct Answer - C Hyperconjugation effect increases in the order `(CH_(3))_(3)C- lt(CH_(3))_(2)CH- ltCH_(3)CH_(2)-`

Discussion

274.	An example of alicyclic compound isA. BenzeneB. HexaneC. CyclohexaneD. Furan
Answer» Correct Answer - C Cyclohexane is an example of alicyclic compound.

Discussion

275.	Which of the following group does not contain a co-ordinate covalent bond ?A. `-N_(2)Cl`B. `-NC`C. `-NO_(2)`D. None of the above
Answer» Correct Answer - A `-N = N-Cl` does not contain a coordinate covalent bond.

Discussion

276.	The compound with an isopropyl group isA. 2,2,3,3-TetramethylpentaneB. 2,2-DimethylpentaneC. 2,2,3, TrimethylpentaneD. 2-Methylpentane
Answer» Correct Answer - D

Discussion

277.	The total number of cyclic isomers possible for the hydrocarbon with molecular formula `C_(4)H_(6)` is
Answer» Correct Answer - 5 Five

Discussion

278.	The formula of hydrocarbon is `C_(4)H_(6)` ? To which family does it belong ?
Answer» Correct Answer - Alkyne

Discussion

279.	The IUPAC name of `(CH_(3))_(2)C-CH=CH_(2)` isA. 2,2-Dimethylbut-2-eneB. 2,2-Dimethylpent-3-eneC. 3,3-Dimethylbut-1-eneD. Hex-1-ene
Answer» Correct Answer - C `underset("3, 3-Dimethylbut-1-ene")underset()(overset(4)CH_(3)-overset(CH_(3))overset(3\|)underset(CH_(3))underset(\|)C-overset(2)CH=overset(1)CH_(2))`

Discussion

280.	The IUPAC name of `CH_(3)CH=CHCOOC_(2)H_(5)` isA. Ethyl but-1-enoateB. Ethyl but-2-enoateC. Ethyl prop-2-enoateD. None of these
Answer» Correct Answer - B `underset("Ethyal but-2-enoate")underset()(overset(4)CH_(3)overset(3)CH=overset(2)CHoverset(1)COOC_(2)H_(5))`

Discussion

281.	What is the relation between `3`-Ethylpentane and `3`-Methylhexane?A. Chain isomersB. Position isomersC. Functional isomersD. Relation
Answer» Correct Answer - A `CH_(3)-CH_(2)-underset(CH_(2)-CH_(3))underset(\|)(CH)-CH_(2)-CH_(3)` and `CH_(3)-CH_(2)-underset(CH_(3))underset(\|)(CH)-CH_(2)-CH_(3)` Carbon skelton is different in both compounds.

Discussion

282.	Vinyl carbinol isA. `HO-CH_(2)CH=CH_(2)`B. `CH_(3)CH(OH)=CH_(2)`C. `CH_(3)CH=CH-OH`D. `CH_(3)-C(CH_(2)OH)=CH_(2).`
Answer» Correct Answer - A `underset("Vinyl carbinol")underset()(HO-CH_(2)-CH=CH_(2))`

Discussion

283.	The incorrect IUPAC name isA. `{:(" "O),(" \|\|"),(CH_(3)-C-CH-CH_(3):" 2-Methyl-3-butanone"),(" \|"),(" "CH_(3)):}`B. `{:(CH_(3)-CH-CH-CH_(3):" 2, 3-Dimethylpentane"),(" \|"" \|"),(" "CH_(3)" "CH_(2)-CH_(3)):}`C. `CH_(3)-C equiv C-CH (CH_(3))_(2)`: 4-Methylpent-2-yneD. `{:(CH_(3)-CH-CH-CH_(3):" 2-Bromo-3-chlorobutane."),(" \|"" \|"),(" "Cl" "Br):}`
Answer» Correct Answer - A (a) is the incorrect name. Correct name is 3- Methylbutan-2-one.

Discussion

284.	The IUPAC name of the following compound is `{:(CH_(2)-CH--CH_(2)),("\|"" \|"" \|"),(CN" "CN" "CN):}`A. 1, 2, 3-tricyanopropaneB. propane-1, 2, 3-trinitrileC. 3, cyanopentane-1, 5-dinitrileD. 1, 3, 5-pentanetrinitrile
Answer» Correct Answer - C 3-Cyanopentane-1,5-dinitrile

Discussion

285.	IUPAC name of `CH_(2)=CH-CN` isA. EthenenitrileB. Vinyl cyanideC. CyanoetheneD. 2-Propenenitrile
Answer» Correct Answer - D `underset("Prop-2-enenitrile")underset()(CH_(2)=CH-CN)`

Discussion

286.	The incorrect IUPAC name isA. `underset("2-Methylbutan-3-ene")underset()(CH_(3)-overset(O)overset(\|\|)C-overset(CH_(3))overset(\|)CH-CH_(3))`B. `underset("2,3-Dimethylpentane")underset()(CH_(3)underset(CH_(3))underset(\|)CH-underset(CH_(2)CH_(3))underset(\|)(CH)-CH_(3))`C. `underset("4-Methylpent-2-yne")underset()(CH_(3)-CequivC"C"H(CH_(3))_(2))`D. `underset("2-Bromo-3-chlorobutane")underset()(CH_(3)-underset(Cl)underset(\|)CH-underset(Br)underset(\|)CH-CH_(3))`
Answer» Correct Answer - A `underset("(Correct name)")underset("3-Methylbut-2-one(A)")underset()(overset(1)CH_(3)-overset(O)overset(2\|\|)C-overset(CH_(3))overset(3\|)(CH)-overset(4)CH_(3))`

Discussion

287.	The structrual formula of 2-methyl-2-butene isA. `CH_(3)-CH(CH_(3))-CH=CH_(2)`B. `CH_(3)-CH_(2)-C(CH_(3))=CH_(2)`C. `CH_(3)CH=CH-CH_(3)`D. `CH_(3)CH=C(CH_(3))-CH_(3)`
Answer» Correct Answer - D `CH_(3)-overset(CH_(3))overset(\|)C=CHCH_(3)` or `underset("2-Methylbut-2-ene")underset()(CH_(3)-C(CH_(3))=CH-CH_(3))`

Discussion

288.	The IUPAC name of `underset(CN)underset(\|)(CH_(2))-underset(CN)underset(\|)(CH)-underset(CN)underset(\|)(CH_(2))` is:A. PropanetricarbylamineB. 3-Cyanopentane-1,5-dinitrileC. Propane-1,2,3-tricarbonitrileD. Propane-1,2,3-trinitrile.
Answer» Correct Answer - C `underset("Propane-1,2,3,-tricarbonitrile")underset()(overset(3)underset(CN)underset(\|)(CH_(2))-overset(2)underset(CN)underset(\|)(CH)-overset(1)underset(CN)underset(\|)(CH_(2)))`

Discussion

289.	IUPAC name of the following compound is `(CH_(2)=CH)_(2)CH-CH=CH_(2)`A. 3,3-Divinyl-1-propeneB. TriethenylmethaneC. TrivinylethaneD. 3-Vinylpenta-1, 4-diene.
Answer» Correct Answer - D `underset("3-Vinylpenta-1, 4-diene")underset()(overset(5)CH_(2)=overset(4)CH-overset(CH=CH_(2))overset(\|3)(CH)-overset(2)CH=overset(1)CH_(2))`

Discussion

290.	IUPAc name of `CH_(3)CH(OH)COOH` isA. Lactic acidB. `prop`-Hydroxypropionic acidC. CarboxypropanolD. 2-Hydroxypropanoic acid.
Answer» Correct Answer - D `underset("2-Hydroxypropanoic acid")underset()(overset(3)CH_(3)-overset(OH)overset(2\|)CH-overset(1)COOH)`

Discussion

291.	A student named the compound as 1, 4-butadieneA. The name is correctB. He committed an error in the selection of carbon chainC. He committed an error in position of double bondD. Unpredictable.
Answer» Correct Answer - C `underset("Buta-1,3-diene")underset()(H_(2)overset(4)C=overset(3)CH-overset(2)CH=overset(1)CH_(2))` The given name is wrong as position of double bonds is not correctly mentioned.

Discussion

292.	The structrual formula of cyclohexyl alcohol isA. B. C. D. None of these
Answer» Correct Answer - A Factual question.

Discussion

293.	The IUPAC name of diglyme isA. 1-EthoxypentaneB. 1-PentoxyethaneC. Bis(2-methoxyethyl)etherD. None of these
Answer» Correct Answer - C Diglyme is `CH_(3)-O-overset(2)CH_(2)-overset(1)CH_(2)-O-overset(1)CH_(2)-overset(2)CH_(2)-O-CH_(3)` Radicofunctional names are advantageous for naming substituted ethers. According to the latest recommendations of IUPAC different systems of nomenclature can be used even for naming one class of compounds. For example, for naming unsymmetrical ethers with several oxygen atoms, replacement nomenclature is recommended. The system of nomenclature to be chosen depends on the ease with which it can be used to name a given compound. As it is a substituted symmetrical ether, it is named as bis(2-methoxyethyl)ether.

Discussion

294.	The correct IUPAC name of A. 4-Isocyanobenzoic acidB. 4-Carbylaminebenzoic acidC. 4-Isonitrilebenzoic acidD. None of these
Answer» Correct Answer - A For isocyanides radicofunctional names or functional class names are used if isocyanide group is present alone or if other group present is of a lower preference order. If other group of higher preference order is present, the prefix isocyano is used. Suffixes such as isonitrile or carbylamine are not allowed in IUPAC system.

Discussion

295.	Indicate the wrongly named compoundA. `underset(("4-Methyl-1-pentanal"))underset()(CH_(3)-underset(CH_(3))underset(\|)(CH)CH_(2)CH_(2)CHO)`B. `underset(("4-Methyl-2-pentyn-1-oic acid"))underset()(CH_(3)-underset(CH_(3))underset(\|)CH-CequivC-COOH)`C. `underset(("2-Methyl-1-pentanoic acid"))(CH_(3)CH_(2)CH_(2)-underset(CH_(3))underset(\|)(CH)-COOH)`D. `underset(("3-Hexen-5-one"))underset()(CH_(3)CH_(2)-CH=CH-overset(O)overset(\|\|)C-CH_(3))`
Answer» Correct Answer - D Factual question.

Discussion

296.	The correct IUPAC name of `C_(6)H_(5)-NC` isA. Phenyl carbylamineB. Phenyl isonitrileC. Phenyl isocyanideD. None of these
Answer» Correct Answer - C For isocyanides radicofunctional names or functional class names are used if isocyanide group is present alone or if other group present is of a lower preference order. If other group of higher preference order is present, the prefix isocyano is used. Suffixes such as isonitrile or carbylamine are not allowed in IUPAC system.

Discussion

297.	The IUPAC name of `CH_(3)-underset(CH_(3))underset(\|)CH-underset(CH_(3))underset(\|)CH-CH_(2)CH_(2)-underset(CH_(3))underset(\|)CH-CH_(3)`A. 2,5,6-TrimethylhexaneB. 2,3,6-TrimethylheptaneC. 2,3,6-TrimethylhexaneD. 2,5,6-Trimethylheptane
Answer» Correct Answer - B `underset("2,3,6-Trimethylheptane")underset()(overset(1)CH_(3)-overset(2)underset(CH_(3))underset(\|)(CH)-overset(3)underset(CH_(3))underset(\|)(CH)-overset(4)CH_(2)-overset(5)CH_(2)-overset(6)underset(CH_(3))underset(\|)(CH)-overset(7)CH_(3))`

Discussion

298.	The compound `(CH_(3))_(3)COH` can be named asA. Trimethyl cabinolB. 1,1,1-Trimethyl lmethanolC. tert-Butyl alcoholD. 2-Methyl-2-propanol.
Answer» Correct Answer - A::C::D In carbinol system of nomenclature of alcohols, `CH_(3)OH` (methyl alcohol) is named as carbinol. All other alcohols are considered as alkyl derivatives of carbinol. The name of the alcohol is written as one word.

Discussion

299.	The IUPAC name for the fomula: `CH_(3) - overset(CH_(3))overset(\|)(C) = CH - COOH` isA. 2-Methylbut-2-enoic acidB. 3-Methylbut-3-enoic acidC. 3-Methylbut-2-enoic acidD. 2-Methylbut-3-enoic acid
Answer» Correct Answer - C `{:(" "CH_(3)),(" \|"),(overset(4)(C)H_(3)overset(3)(-C)=overset(2)(C)H-overset(1)(C)OOH):}` 3-Methylbut-2-enoic acid

Discussion

300.	The `IUPAC` name of the compound `CH_(3)-overset(CH_(3))overset(\|)(C)=overset(H)overset(\|)(C)-COOH` isA. 2-Methylbut-2-enoic acidB. 3-Methylbut-3-enoic acidC. 3-Methylbut-2-enoic acidD. 2-Methylbut-3-enoic acid.
Answer» Correct Answer - C `underset("3-Methylbut-2-enoic acid")underset()(overset(4)CH_(3)-overset(CH_(3))overset(\|3)C=overset(H)overset(\|2)C-overset(1)COOH)`

Discussion

Explore topic-wise InterviewSolutions in .

Sulphur compounds in crude oil can be removed by usingA. copper oxideB. alumiaC. iron oxideD. magneisum oxide

Petroleum franction of which of thr following compositions can be used as a lubricating oil ?A. `C_5-C_7`B. `C_(10)-C_(16)`C. `C_(20)-C_(24)`D. `C_(30)-C_(40)`

The IUPAC name for the compound A. Propionic anhydrideB. Dipropionic anhydrideC. Ethoxypropanoic acidD. Propanoic anhydride.

The IUPAC name of compound `CH_(3)OCH_(2)CH_(2)CH_(2)OCH_(2)CH_(3)` isA. 1-Ethoxy-3-methoxypropaneB. Ethoxy propaneoxymethaneC. 3-Ethoxy-1-methoxypropaneD. 2, 5-Dioxyhexane

The correct IUPAC name of `CH_(3)-overset(O)overset(||)C-OCOCH_(3)`isA. Methyl ethanoateB. Acetato ethanoateC. Ethanoic anhydrideD. Ethanoyl ethanoate.

The IUPAC name of `HOOC-CH=CH-CH=CH-COOH` isA. Hexa-2,4-dienedioic acidB. 2,4-Dihexene-1,6-dioic acidC. Hexa-2,4-diene-1,6-dioic acidD. All the above

The correct IUPAC name of `HOOC-underset(COOH)underset(|)(CH)-COOH` isA. TricarboxymethaneB. Propanetrioic acidC. Tributanoic acidD. Methanetricarboxylic acid,

Give the IUPAC name of the coumpound `CH_(2)=CH-CH(CH_(3))_(2)`

Which of the following is unsaturated compound?A. `C_(6)H_(14)`B. `C_(4)H_(8)`C. `C_(3)H_(7)OH`D. `CH_(3)OH`

Which of the following is an unsaturated compound ?A. `C_(6)H_(14)`B. `C_(4)H_(8)`C. `C_(3)H_(7)OH`D. `CH_(3)OH`

The IUPAC name of the compound `CH_(2) = CH - CH(CH_(3))_(2)` is:A. 1, 1-Dimethylprop -2-eneB. 3-Methylbut-1-eneC. 2-VinylpropaneD. 1-Isopropylethylene

In which of the following species hyperconjugation in possible?A. `CH_(3)-overset(-)(C)H_(2)`B. `C_(6)H_(5)-CH_(3)`C. `CH_(2)=CH_(2)`D. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH=CH_(2)`

Amongst the following the total number of nucleophiles is : `SO_(3), NH_(2)^(-), R^(-), H_(2)O, OR^(-), ROH, AlCl_(3), H^(-), BF_(3)`.

The most unlikely representation of resonance structure of p-nitrophenoxide isA. B. C. D.

What is the type of hybridization in the following compounds (a) `CH_(3)Cl`, (b) `(CH_(3))_(2)CO`, (c) `CH_(3)CN` (d) `HCONH_(2)`, (e) `CH_(3)CH = CHCN`

In which of the following compounds the C-Cl bond ionisation shall give most stable carbonium ion ?A. B. C. D.

Select electrophiles out of the following : `H^(+), Na^(+), Cl^(-), C_(2)H_(5)OH, AlCl_(3), SO_(3), CN^(-), CH_(3)CH_(2)^(+), : C Cl_(2), R-X`

What is the type of hybridzation of each carbon in the following compounds? `CH_(3)Cl` (b) `(CH_(3))_(2)CO` (c ) `CH_(3)CN` (d) `HCONH_(2)` (e) `CH_(3)CH=CHCN`

Resonance is not possible inA. B. C. D.

Among the following , the least stable resonance structure isA. B. C. D.

An example of alicyclic compound isA. BenzeneB. HexaneC. CyclohexaneD. Furan

Which of the following group does not contain a co-ordinate covalent bond ?A. `-N_(2)Cl`B. `-NC`C. `-NO_(2)`D. None of the above

The compound with an isopropyl group isA. 2,2,3,3-TetramethylpentaneB. 2,2-DimethylpentaneC. 2,2,3, TrimethylpentaneD. 2-Methylpentane

The total number of cyclic isomers possible for the hydrocarbon with molecular formula `C_(4)H_(6)` is

The formula of hydrocarbon is `C_(4)H_(6)` ? To which family does it belong ?

The IUPAC name of `(CH_(3))_(2)C-CH=CH_(2)` isA. 2,2-Dimethylbut-2-eneB. 2,2-Dimethylpent-3-eneC. 3,3-Dimethylbut-1-eneD. Hex-1-ene

The IUPAC name of `CH_(3)CH=CHCOOC_(2)H_(5)` isA. Ethyl but-1-enoateB. Ethyl but-2-enoateC. Ethyl prop-2-enoateD. None of these

What is the relation between `3`-Ethylpentane and `3`-Methylhexane?A. Chain isomersB. Position isomersC. Functional isomersD. Relation

Vinyl carbinol isA. `HO-CH_(2)CH=CH_(2)`B. `CH_(3)CH(OH)=CH_(2)`C. `CH_(3)CH=CH-OH`D. `CH_(3)-C(CH_(2)OH)=CH_(2).`

The IUPAC name of the following compound is `{:(CH_(2)-CH--CH_(2)),("|"" |"" |"),(CN" "CN" "CN):}`A. 1, 2, 3-tricyanopropaneB. propane-1, 2, 3-trinitrileC. 3, cyanopentane-1, 5-dinitrileD. 1, 3, 5-pentanetrinitrile

IUPAC name of `CH_(2)=CH-CN` isA. EthenenitrileB. Vinyl cyanideC. CyanoetheneD. 2-Propenenitrile

The structrual formula of 2-methyl-2-butene isA. `CH_(3)-CH(CH_(3))-CH=CH_(2)`B. `CH_(3)-CH_(2)-C(CH_(3))=CH_(2)`C. `CH_(3)CH=CH-CH_(3)`D. `CH_(3)CH=C(CH_(3))-CH_(3)`

The IUPAC name of `underset(CN)underset(|)(CH_(2))-underset(CN)underset(|)(CH)-underset(CN)underset(|)(CH_(2))` is:A. PropanetricarbylamineB. 3-Cyanopentane-1,5-dinitrileC. Propane-1,2,3-tricarbonitrileD. Propane-1,2,3-trinitrile.

IUPAC name of the following compound is `(CH_(2)=CH)_(2)CH-CH=CH_(2)`A. 3,3-Divinyl-1-propeneB. TriethenylmethaneC. TrivinylethaneD. 3-Vinylpenta-1, 4-diene.

IUPAc name of `CH_(3)CH(OH)COOH` isA. Lactic acidB. `prop`-Hydroxypropionic acidC. CarboxypropanolD. 2-Hydroxypropanoic acid.

A student named the compound as 1, 4-butadieneA. The name is correctB. He committed an error in the selection of carbon chainC. He committed an error in position of double bondD. Unpredictable.

The structrual formula of cyclohexyl alcohol isA. B. C. D. None of these

The IUPAC name of diglyme isA. 1-EthoxypentaneB. 1-PentoxyethaneC. Bis(2-methoxyethyl)etherD. None of these

The correct IUPAC name of A. 4-Isocyanobenzoic acidB. 4-Carbylaminebenzoic acidC. 4-Isonitrilebenzoic acidD. None of these

The correct IUPAC name of `C_(6)H_(5)-NC` isA. Phenyl carbylamineB. Phenyl isonitrileC. Phenyl isocyanideD. None of these

The IUPAC name of `CH_(3)-underset(CH_(3))underset(|)CH-underset(CH_(3))underset(|)CH-CH_(2)CH_(2)-underset(CH_(3))underset(|)CH-CH_(3)`A. 2,5,6-TrimethylhexaneB. 2,3,6-TrimethylheptaneC. 2,3,6-TrimethylhexaneD. 2,5,6-Trimethylheptane

The compound `(CH_(3))_(3)COH` can be named asA. Trimethyl cabinolB. 1,1,1-Trimethyl lmethanolC. tert-Butyl alcoholD. 2-Methyl-2-propanol.

The IUPAC name for the fomula: `CH_(3) - overset(CH_(3))overset(|)(C) = CH - COOH` isA. 2-Methylbut-2-enoic acidB. 3-Methylbut-3-enoic acidC. 3-Methylbut-2-enoic acidD. 2-Methylbut-3-enoic acid

The `IUPAC` name of the compound `CH_(3)-overset(CH_(3))overset(|)(C)=overset(H)overset(|)(C)-COOH` isA. 2-Methylbut-2-enoic acidB. 3-Methylbut-3-enoic acidC. 3-Methylbut-2-enoic acidD. 2-Methylbut-3-enoic acid.