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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 501. |
In graphite, each `C` atom isA. `sp^(3)`B. `sp`C. `sp^(2)`D. None of these |
| Answer» Correct Answer - C | |
| 502. |
In carbon tetrachloride, four valence of carbon are directed to four corners ofA. RectangleB. SquareC. TetrahedronD. None of these |
| Answer» Correct Answer - C | |
| 503. |
Enricle has a higher molecule as directed :A. Which is stronger : `BH_(3) or BF_(3)`B. Which is stronger base `: HO^(-) or H_(2)O`C. Which is a stronger acid : `HO^(-) or HS^(-)`D. Which s a stronger acid : HCI or HI Which is a stronger acid : HOCI or HCI |
| Answer» Correct Answer - A::B::C::D | |
| 504. |
Encirle the molecules as directed :A. Which has higher boiling pint : HBr or HCIB. Which has a higher boiling point : `CH_(3)-CH_(2)-OH or CH_(3)-CH=O`C. Which is more miscible with methanol `(CH_(3)OH) : CH_(3)-CH_(2)-CH_(2)-CH_(3) or CH_(3)-CH_(2)-CH_(2)-CH_(2)-CH_(2)-CH_(3)`D. Which has a higher melting point : `CH_(4) or CH_(3)-CH_(2)-CH_(3)` Which has higher boiling point : `CH_(3)-CH_(2)-CH_(2)-CH_(2)-CH_(3) or CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)CH_(2)-CH_(3)` |
| Answer» Correct Answer - A::B::C | |
| 505. |
Identify the compounds in which all bond length are equal :A. B. C. D. |
| Answer» Correct Answer - D | |
| 506. |
Arrangements of `(CH_(3))_(3)C-,(CH_(3))_(2)CH-,CH_(3).CH_(2)-` when attached to benzyl or `n` unsaturated group in increasing order of inductive effects is:A. `(CH_(3))_(3)-C - lt (CH_(3))_(2) - CH - lt CH_(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 - lt CH_(3) - CH_(2) -`D. `(CH_(2))_(3) - C - lt CH_(3) - CH_(2) - lt (CH_(3))_(2)-CH -` |
| Answer» Correct Answer - B | |
| 507. |
Which of the following compounds is the most acidicA. `CH_(4)`B. `C_(6)H_(5)CH_(2)`C. `(C_(6)H_(5))CH_(2)`D. `(C_(6)H_(5))_(3)CH` |
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Answer» Correct Answer - D Through resonace, a phenyl group stabilizes a benzlic anion. The more phenyl groups there are, the greater the stabilization. |
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| 508. |
Which of the following compounds is most acidic ?A. `CH_(3)COOH`B. `CH_(3)CH_(2)OH`C. `CH_(3)ClCOOH`D. `C Cl_(3)COOH` |
| Answer» Correct Answer - D | |
| 509. |
`Me_3 overset (Ӫ) C` is more stable than `overset (Ӫ) C H_3`. The `+ I` effect of the three `Me` groups in `Me_3 overset (Ӫ) C` tends to make it more stable than `overset (Ӫ) C H_3`.A. If both (A) and ( R) are true and ( R) is the correct explanation of (A).B. If both (A) and ( R) are true but ( R) is not correct explanation of (A).C. If (A) is true but ( R) is false.D. If (A) is false but ( R) if true. |
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Answer» Correct Answer - D (d) Stability of carbanion is decreasing by `+ I` effect or by `overline e`- donating groups and vice versa. |
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| 510. |
The increasing order of stability of the following free radicals is :A. `(CH_(3))_(2)overset(*)(C)H lt (CH_(3))_(3) overset(*)(C) lt (C_(6)H_(5))_(2) overset(*)(C)H lt (C_(6)H_(5))_(3)overset(*)(C)`B. `(C_(6)H_(5))_(3)overset(*)(C) lt (C_(6)H_(5))_(2)overset(*)(C)H lt (CH_(3))_(3) overset(*)(C) lt (CH_(3))_(2)overset(*)(C)H`C. `(C_(6)H_(5))_(2)overset(*)(C)H lt (C_(6)H_(5))_(3)overset(*)(C) lt (CH_(3))_(3)overset(*)(C) lt (CH_(3))_(2)overset(*)(C)H`D. `(CH_(3))_(2)overset(*)(C)H lt (CH_(3))_(3)overset(*)(C) lt (C_(6)H_(5))_(3) overset(*)(C) lt (C_(6)H_(5))_(2) overset(*)(C)H` |
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Answer» Correct Answer - A `(C_(6)H_(5))_(3)overset(*)(C)` and `(C_(6)H_(5))_(3)overset(*)` is more resonance stabilised. `(CH_(3))_(2)overset(*)(C)H` (6 hyperconjugative structures) and `(CH_(3))_(3)overset(*)(C)` (9 hyperconjugative structures) are stabilized through hyperconjugation. Larger the number of hyperconjugative structure, greater the stability. Resonanace proves a better way to provide stability rather than hyperconjugation. Therefore stability order goes as `(CH_(3))_(2)overset(*)(C)H lt (CH_(3))_(3) overset(*)(C)lt (C_(6)H_(5))_(2)overset(*)(C)H lt (C_(6)H_(5))_(3)overset(*)(C)` |
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| 511. |
Among the following mixiture dipole-dipole as the mojor interaction is present isA. Benzene and ethanolB. Acetonitrile and acetoneC. KCl and waterD. Benzene and carbon tetrachloride |
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Answer» Correct Answer - B Dipole-dipole interaction exists amongst the molecules having permanent dipole. |
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| 512. |
3 - methyloctance can be represented in which of the following forms ?A. `underset(CH_(3))underset(|)(CH_(3)CH_(2)CH(CH_(2))_(4)CH_(3))`B. C. D. All of the above |
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Answer» Correct Answer - D 3- methyloctane can be represented by all of the above forms |
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| 513. |
The kind of valency that exists in `CaH_(2)` and `C_(2)H_(2)` isA. electrovalency in `CaH_(2)` and convalency in `C_(2)H_(2)`B. electrovalency in bothC. covalency in `CaH_(2)` and electrovalency in `C_(2)H_(2)`D. covalency in both |
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Answer» Correct Answer - A Electrovalency in `CaH_(2)` and covalency in `C_(2)H_(2)` |
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| 514. |
The number of isomeric pentyl alcohols possible isA. TwoB. FourC. SixD. Eight |
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Answer» Correct Answer - D Draw all possible isomers having all single bonds in them and count their total number. (i) `CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)OH` (ii) `{:(CH_(3)CH_(2)CH_(2)CH_(2)CH_(3)),(" |"),(" "OH):}` (iii) `{:(CH_(3)CH_(2)CH-CH_(2)CH_(3)),(" |"),(" "OH):}` (iv) `{:(CH_(3)CH_(2)CH-CH_(2)OH),(" |"),(" "CH_(3)):}` (v) `{:(" "OH),(" |"),(CH_(3)CH_(2)C-CH_(3)),(" |"),(" "CH_(3)):}` (vi) `{:(" "CH_(2)OH),(" |"),(CH_(3)CH_(2)CH-CH_(3)):}` (vii) `{:(" "CH_(3) ),(" |"),(CH_(3)-C-CH_(2)OH),(" |"),(" "CH_(3)):}` (viii) `{:(" "CH_(2)-OH),(" |"),(CH_(3)-C-CH_(3)),(" |"),(" "CH_(3)):}` |
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| 515. |
n-pentane and 2-methylbutane are a pair ofA. EnantiomersB. StereoisomersC. DiastereomersD. Constitutional isomers |
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Answer» Correct Answer - D Constitutional isomerism or strcuture isomerism arises due to the difference in the manner in which the consituent atoms or groups are linked to one another within the molecule, without any reference to space. The type of consitutional isomerism that exists between n-pentane and 2-methyl butane is chain isomerism. |
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| 516. |
Which kind of isomerism is possible for 1-chloro-2-nitroetheneA. Functional group isomerismB. Position isomerismC. E/Z isomerismD. Optical isomerism |
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Answer» Correct Answer - C `underset("1-1chloro-2-nitroethene")(O_(2)NHC = CHCl)` For highly substituted alkenes E and Z system of nomenclature is sued, which is based on a polarity system developed by Cahn, Ingold and Prelog. |
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| 517. |
Which of the following is a polar compoundA. `C_(2)H_(6)`B. `C Cl_(4)`C. HClD. `CH_(4)` |
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Answer» Correct Answer - C We know that three is more difference in the electronegativities of hydrogen and chlorine. Therefore HCl is a polar compound. |
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| 518. |
The IUPAC name of the given compound A. 3-Cyclopropane -1-propeneB. 4-Hydroxy-2-methylpentanalC. 1-AllyclyclopropaneD. 3-Allylcyclopropane |
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Answer» Correct Answer - B |
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| 519. |
The IUPAC name of the given compound is : A. 4-Bromo-3-cyanophenolB. 2-bromo-5-hydroxybenzonitrileC. 2-cyano-4-hydroxybromobenzeneD. 6-bromo-3-hydroxybenzonitrile |
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Answer» Correct Answer - D |
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| 520. |
The IUPAC name is A. N-Cyclohexyl benzamideB. N-Phenyl-N-cyclohexylmethanamideC. N-Phenylcyclohexane carboxamideD. N-Cyclohexyl-N-phenylmethylamide. |
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Answer» Correct Answer - C |
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| 521. |
which of the following explains this structureA. B. C. D. |
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Answer» Correct Answer - A |
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| 522. |
The number & type of carbon atoms present in neopentane areA. four `1^(@)` carbons, one `4^(@)` carbonB. two `1^(@)` carbons , two `2^(@)` carbonsC. one `1^(@)` carbon , one `4^(@)` carbonD. one `1^(@)` carbon , one `4^(@)` carbon |
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Answer» Correct Answer - A |
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| 523. |
The compound which has one isopropyl group isA. 2,2,3,3-tetramethyl pentaneB. 2,2-dimethyl pentaneC. 2,2,3-trimethyl pentaneD. 2-methyl pentane |
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Answer» Correct Answer - D |
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| 524. |
The structural formula of methyl amino methane isA. `(CH_(3))_(2)CH NH_(2)`B. `(CH_(3))_(3)N`C. `(CH_(3))_(2)NH`D. `CH_(3)NH_(2)` |
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Answer» Correct Answer - C |
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| 525. |
Which of the following is not an electrophile ?A. `SO_(3)`B. `overset(+)CH_(3)`C. `CH_(3)overset(+)CO`D. `(CH_(3))_(2)NH` |
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Answer» Correct Answer - D `(CH_(3))_(3)NH` is a nucleophile due to the presence of unshared `e^(-)` pair on `N` atom. In `SO_(3)` atom has low electron density as it is pi bonded to `3` highly electronegative `O` atoms. Moreover,`S` can expand its valence shell using its `d` subshell. Therefore, `SO_(3)` is electrophilic. `overset(+)CH_(3)` and `CH_(3)overset(+)CO` are also electrophilic as they carry positively charged `C` atom. |
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| 526. |
Which of the following structures represents a chiral compound?A. B. C. D. |
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Answer» Correct Answer - D Compound (D) contains assymetric carbon at 3rd position |
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| 527. |
Which of the following statement is/are correct ?A. Dipole moment of : B. Dipole moment of : `CH_3F gt CH_3 C1 gt CH_3 Br gt CH_3 I`C. Dipole moment of : `NH_3 gt NF_3`D. Dipole moment of : `CH_3 C1 gt CH_2 C1_2 gt CHC1_3 gt C C1_4` |
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Answer» Correct Answer - A::C::D (a,c,d) (a) `I gt II gt III`. In `(I)`, intramolecular `H-bonding` decreases the bond angle `(lt 60^@)`, hence `mu` is increased. In `(III)` dipole-dipole repulsive of two `C1` atoms in `o` position increases the bond angle `(gt60^@)` and hence `mu` is decreased. (b) `CH_3 C1 gt CH_3 F gt CH_3 Br gt CH_3 I` ( c) N/A (d) N/A. |
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| 528. |
Which will show geometrical isomerism?A. B. C. D. a & c both |
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Answer» Correct Answer - D Double bond in (A), ( C) are geometrically active |
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| 529. |
Which of the following is capable of showin geometrical isomerismA. B. C. D. |
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Answer» Correct Answer - C 2 stereo centers |
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| 530. |
Which of the following statement is correct ?A. Dipole moment : B. Stability of free radical : C. Basic strength : `CH_3 O^(Ө) gt overset (Ө) O H gt R S^(Ө)`D. Basic and nucleophilic strength : `I^(Ө) gt Br^(Ө) gt C1^(Ө) gt F^(Ө)` |
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Answer» Correct Answer - A::B (a,b) (a) The smaller the angle, the larger the dipole moment, so `mu` of `I gt II gt III`. (b) (I) is `3^@` Allylic with conjugation. (II) is `3^@` Allylic. (III) `3^@` free radical. Hence, the order is `I gt II gt III`. ( c) Acidity : `RSH gt CH_3OH gt H_2 O` Basic strength : `RS^(Ө) lt CH_3 O^(Ө) lt overset (Ө) O H` (d) Acidity : `HI gt HBr gt CH1 gt HF` Basicity : `I^(Ө) lt Br^(Ө) lt C1^(Ө) lt F^(Ө)` Nucleophilic : `I^(Ө) gt Br^(Ө) gt C1^(Ө) gt F^(Ө)` When nucleophilic centres are different and belong to the same group of periodic table, nucleophilicity is antiparallel to basicity. |
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| 531. |
Which of the following show geometerical isomerismA. `CH_(3)CH=CHCH_(3)`B. `(CH_(3))_(2)C=CH_(2)`C. `C_(2)H_(5)CH=CH_(2)`D. `CH_(3)CH=CH_(2)` |
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Answer» Correct Answer - 1 fumericacid and maleic acid HOOCCH=CHCOOH |
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| 532. |
In this paragraph, some statements are given based on isomerism. Read the following statements given for every question and provide the answer. Which of the following structrues of a cyclic alkene with the lowest number of `C` atoms shows both geometrical and optical isomerism?A. B. C. BothD. None |
| Answer» Correct Answer - A | |
| 533. |
The process whereby a hydrogen atom attached to the `alpha`-carbon carbonyl compound moves to the cabonyl oxygen atom is nown as enolization or keto-enol tautomerism. Isomeric carbonyll and enol structures are tautomers. Normally, the carbonyll form is favoured but structural factor market affect `K_(T)`. Arrange the following compounds in decreasing order of `k_(T)` (Tautomeric constant) A. `PgtQgtR gtS`B. `SgtQgtPgtR`C. `QgtRgtPgtS`D. `SgtPgtRgtQ` |
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Answer» Correct Answer - B Resonance and active metyle group |
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| 534. |
An organic compound having a carbon attached to four different group is optically actve, But is it that opposite is also true? That is, do all optically active organic compounds have chiral carbons? Not necessarily. Presence or absence of chiral centre is not the sufficiet criterion for optical activity. The ultimate criterion is presence or abosence of either plane or centre of symmtry. Two compounds which are non super im[osabble mirror images of each other are called enantiomers. If a compound contains more than one chiral carbon, new words are required to describe the relationship between various stereo isomers of the compounds. Those words are diastereomers and mesomers. Optically active compounds among the following is/are A. A,B and EB. A,B,D and EC. B,C, and ED. B,C,D and E |
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Answer» Correct Answer - 3 `alpha=(theta)/(lc)` |
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| 535. |
Write the IUPAC name of `CH_(3)CH_(2)COOH`A. Ethyl formic acidB. Ethyl carboxylic acidC. Ethane methanoic acidD. Propanoic acid |
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Answer» Correct Answer - D `underset("Propanoic acid")(underset(3)(CH_(3))underset(2)(CH_(2))underset(1)(COOH)` |
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| 536. |
The `IUPAC` name of `CH_(3)CH_(2)C(Br)=CHCl` isA. 2-bromo-1-chloro buteneB. 1-chloro-2-bromo buteneC. 3-chloro-2-bromo buteneD. None of the above |
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Answer» Correct Answer - A `{:(" "Br),(" |"),(underset("2-bromo-1-chloro but-1-ene")(underset(4)(C)H_(3)underset(3)(C)H_(2)underset(2)(C)=CH-Cl)):}` |
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| 537. |
Achiral molecules among the following areA. B. C. D. |
| Answer» Correct Answer - B::C::D | |
| 538. |
In this paragraph, some statements are given based on isomerism. Read the following statements given for every question and provide the answer. How many isomeric dienes with a six membered ring are possible for the compound with molecular formula `C_(7)H_(10)`?A. 5B. 6C. 7D. 8 |
| Answer» Correct Answer - D | |
| 539. |
Amongst the following the most basic compound isA. p-NitroanilineB. AcetanilideC. AnilineD. Benzylamine |
| Answer» Correct Answer - D | |
| 540. |
Amongst the following, the most basic compound isA. BenzylamineB. AnilineC. AcetanilideD. p-nitroaniline |
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Answer» Correct Answer - A Due to +I effect to benzyl group. |
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| 541. |
The compound which would give the most stable carbcation on dehydration is :A. B. C. D. |
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Answer» Correct Answer - C (c ) It would give most stable `3^@ C^(Ө)`. |
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| 542. |
The process whereby a hydrogen atom attached to the `alpha-carbon` of carbonyl compound moves to the carbonyl oxygen atom is known as enolization or keto-enol tautomerism. Isomeric carbonyl and enol structure are tautomers. ltbgt Normally, the carbonyl form is favoured but structure factor marked affect `K_(T)`. Which of the following compounds will not exhibit enozation?B. `CH_(3)-overset(O)overset(||)C-CH_(3)`C. D. `Ph-overset(O)overset(||)C-CH_(3)` |
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Answer» Correct Answer - C No `prop-H` |
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| 543. |
The general molecular formula, which represents the homologous series of alkanols isA. `C_(n)H_(2n+1)O`B. `C_(n)H_(2n+2)O`C. `C_(n)H_(2n)O_(2)`D. `C_(n)H_(2n)O` |
| Answer» Correct Answer - B | |
| 544. |
The structures shows A. Geometrical isomerismB. Optical isomerismC. Both 1 and 2D. Tauomerism |
| Answer» Correct Answer - B | |
| 545. |
The I.U.P.A.C. name of `(C_(2)H_(5))_(2)CH.CH_(2)OH` isA. 2-ethyl butanol-1B. 2-methyl pentanol-1C. 2-ethyl pentanol-1D. 3-ethyl butanol-1 |
| Answer» Correct Answer - A | |
| 546. |
A compound with molecular formula `C_(7)H_(16)` shows optical isomerism, the compound will beA. 2,3-dimethylpentaneB. 2,2-dimethylpentaneC. 2-methylhexaneD. 2,3-dimethyhexane |
| Answer» Correct Answer - A | |
| 547. |
The IUPAC name of the compound `CH_(2)=CH-CH_(2)-CH_(2)-C-=CH` isA. 1, 5-hexenyneB. 1-hexyne-5-eneC. 1, 5-hexyneneD. 1-hexene-5-yne |
| Answer» Correct Answer - D | |
| 548. |
IUPAC nomenclature of `{:(" "CH_(3)" "CH_(3)),(" |"" |"),(H_(3)C-C-CH=C-CH_(3)),(" |"),(" "CH_(3)):}`A. 2, 4,4-trimethylpent-2-eneB. 2, 4,4-trimethylpent-3-eneC. 2, 2,4-trimethylpent-3-eneD. 2, 2,4-trimethylpent-2-ene |
| Answer» Correct Answer - A | |
| 549. |
Of the following, the compound possessing optical isomerismA. `CH_(3)CH_(2)OH`B. `CH_(3)CHClBr`C. `C Cl_(2)BrF`D. `C Cl_(2)F_(2)` |
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Answer» Correct Answer - B `{:(" "H),(" |"),(CH_(3)-C-Cl),(" *|"),(" "Br):}`, it is a chiral compound. |
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| 550. |
Disymmetrical object is one which imageA. Superimposable on its mirror imageB. Non-superimposable on its mirror imageC. Optically inactiveD. Achiral |
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Answer» Correct Answer - B Non superimposable on its mirror image. |
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