InterviewSolution
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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.
| 151. |
How many chain isomers are shown by `C_(4)H_(10)`A. 3B. 2C. 4D. 5 |
| Answer» Correct Answer - B | |
| 152. |
How many chain isomers are shown by `C_(4)H_(9)OH`A. 2B. 3C. 4D. 5 |
| Answer» Correct Answer - A | |
| 153. |
L-form of the given compounds isA. B. C. D. |
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Answer» Correct Answer - D Mirror image of D-ribose is known as L-form |
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| 154. |
Which of the following pairs of compounds are chain isomers?A. n-Butyl alcohol and s-butyl alcoholB. isobutyl alcohol and t-butyl alcoholC. s-butyl alcohol and t-butyl alcoholD. n-propyl alcohol and isompropyl alcohol |
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Answer» Correct Answer - C Alcohols exhibiting chain isomerism have the same position of the funtional group but possess different skeletons: `underset("Butane-2-ol")(CH_(3)underset(OH)underset(|)(C)HCH_(2)CH_(3))" "underset(2-"Methylpropan-2-ol")(CH_(2)underset(CH_(3))underset(|)overset(OH)overset(|)(C)CH_(3))` |
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| 155. |
Strutural isomers `C_2H_5OH` and `CH_3OCH_3` have the same value ofA. boiling pointsB. heat of vaporizationC. gaseous densities at the same temperature and pressureD. vapor pressure at the same temperature |
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Answer» Correct Answer - C `C_2H_5OH` exhibits intermolecular H bonding while `CH_3OCH_3` does not exhibit intermolecular H bonding Thus, they have different values of (1), (2), and (4) becase of same molecular mass, they have same gaseous dendities at the same T and `P(d=(PM)/(RT))` |
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| 156. |
Cyanides and isocyanides are isomers of the typeA. position isomersB. tautomersC. functional isomersD. none of these |
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Answer» Correct Answer - C Cyanides (RCN) and isocyanides (RNC) are functional isomers as they possess different functional groups. |
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| 157. |
Which of the following is a meso compound ?A. B. C. D. All of these |
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Answer» Correct Answer - d All compound have P.O.S. and chiral centre so all are meso. |
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| 158. |
The separation of a recemic mixture into pure enantiomers is termed as :A. RacemizationB. IsomerizationC. ResolutionD. Equilibration |
| Answer» Correct Answer - c | |
| 159. |
Rank of the following groups in order of R,S precedence (IV is highest) : `{:(-CH(CH_(3))_(2),-CH_(2)CH_(2)Br,-CH_(2)Br,-C(CH_(3))_(3)),(1,2,3,4):}`A. `{:(I,II,III,IV),(3,2,4,1):}`B. `{:(I,II,III),(1,4,2):}`C. `{:(I,II,III,IV),(1,4,2,2):}`D. `{:(I,II,III),(3,4,2):}` |
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Answer» Correct Answer - c Follows CIP rules. |
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| 160. |
The correct order of priority of groups `-SCH_(3) (I),-NO_(2)(II),-C-=CH (III)and -CH_(2)C_(6)H_(5)(IV),` on the basis of CIP classification, is (increasing order):A. I,III,II,IVB. IV,III,II,IC. II,IV,I,IIID. III,IV,II,I |
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Answer» Correct Answer - b Follow CIP rules. |
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| 161. |
The molecules represented by the above two structures are :A. identicalB. enantiomersC. diastereomersD. epimers |
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Answer» Correct Answer - a Both molecule have same configuration so are identical. |
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| 162. |
How many plance of symmetry (Z) present in the following compound? |
| Answer» Correct Answer - 3 | |
| 163. |
How many plance of symmeyry are present in following compound? A. 2B. 1C. 0D. 3 |
| Answer» Correct Answer - a | |
| 164. |
Which of the following structure cannot show optical isomerism?A. B. C. D. |
| Answer» Correct Answer - d | |
| 165. |
Which of the following compounds has indicate carbon-R-configured?A. B. C. D. |
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Answer» Correct Answer - a,c,d (a) R (b) S (c ) R (d) R |
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| 166. |
Find out correct representation of trans-decaline A. B. C. D. none of these |
| Answer» Correct Answer - B | |
| 167. |
Identify total number of egometrical isomers in given compound : A. 2B. 4C. 6D. 8 |
| Answer» Correct Answer - b | |
| 168. |
`alpha`-D-Glucopyanose and `beta`-D-Glucopyranose are:A. stereoisomersB. diastreoisemerC. enantiomersD. anomers |
| Answer» Correct Answer - a,b,d | |
| 169. |
Which of the following will racemize in presence of acid or base traces in aqueous medium?A. `Me-underset(O)underset(||)C-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-Ph`B. `Me-underset(O)underset(||)C-CH_(2)-underset(D)underset(|)overset(H)overset(|)C-CH_(3)`C. `Me-underset(H)underset(|)overset(Et)overset(|)C-underset(H)underset(|)overset(Me)overset(|)C-underset(O)underset(||)C-Ph`D. `Ph-underset(O)underset(||)C-underset(CH_(3))underset(|)overset(H)overset(|)C-CH_(2)-CH_(3)` |
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Answer» Correct Answer - d `sp^(2)` carbon of enol form can be attached from both the side. |
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| 170. |
Which of the following pair of compounds can be speparted by fractional crystyallisation?A. B. C. D. |
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Answer» Correct Answer - c,d (c ) They are diasteromers of each others (d) They have different dipole moment |
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| 171. |
Which compound (s) will show the geometrical isomerism?A. B. C. D. |
| Answer» Correct Answer - a,c | |
| 172. |
Find out the correct option (s) :A. B. C. D. |
| Answer» Correct Answer - a,b,d | |
| 173. |
Which of the following compound wil not show tautomerism ?A. `H_(3)C-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-N=O`B. `CH_(3)-Ch_(2)_NO_(2)`C. `CH_(3)-NH-overset(O)overset(||)(C)-CH_(3)`D. `CH_(3)-overset(O)overset(||)(C)-CH_(3)-overset(O)overset(||)(C)-OC_(2)H_(5)` |
| Answer» Correct Answer - A | |
| 174. |
Select the correct statementA. Eclipaed and staggered ethanes give different products on reaction with chorine in presence of lightB. The conformational isomers can be isolated at room temperatureC. Torsional strain in ethane is minimum at dihedral angle `60^(@)`, `180^(@)` and `300^(@)`D. Steric strain is minimum in staggered gauche from of n- butane |
| Answer» Correct Answer - C | |
| 175. |
The following two compounds are : A. identicalB. Conformational isomersC. Geometrical ismersD. structural isomers |
| Answer» Correct Answer - C | |
| 176. |
Which of the following is erythro from and optically inactiveA. B. C. D. |
| Answer» Correct Answer - C | |
| 177. |
Among the following the optically inactive compound is :A. B. C. D. |
| Answer» Correct Answer - A | |
| 178. |
How are the following two compounds related? A. Constitutional isomerB. DiasteromerC. EnantiomersD. Homomer |
| Answer» Correct Answer - C | |
| 179. |
How are the following two compounds related? A. Constitutional isomerB. DiasteromerC. Enantiomers D. Homomer |
| Answer» Correct Answer - C | |
| 180. |
Correct order for enolic content for a compound : A. `Igt II gt III`B. `III gt II gtI`C. `II gt I gtIII`D. `I gt III gt II` |
| Answer» Correct Answer - c | |
| 181. |
Match the column (Matrix) |
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Answer» Correct Answer - a-p; b-q; c-r; d-s Draw and Check. |
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| 182. |
The following compounds are identical with respect to : A. molecular compositionB. boiling pointC. melting pointD. IUPAC name |
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Answer» Correct Answer - a Both molecule has same molecular formula `C_(6)H_(11)Cl` so have molecolar wt, and composition because both have substituents on same atoms. |
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| 183. |
Which of the given statement(s) about N, O, P and Q with respect to M is/are correct? A. M and N are non-mirror image stereoisomersB. M and O are identicalC. M and P are enantiomersD. M and Q are identical |
| Answer» Correct Answer - b,d | |
| 184. |
Most stalbe conformation of succinic acid in basic medium will be :A. gaucheB. fully eclipsedC. antiD. skew |
| Answer» Correct Answer - c | |
| 185. |
Which molecule has higher keto -contentsA. `CH_(3)-underset(O)underset(||)(C)-CH_(3)`B. `H-underset(O)underset(||)(C)-CH_(2)-underset(O)underset(||)(C)-H`C. `CH_(3)-O-underset(O)underset(||)(C)-CH_(3)-underset(O)underset(||)(C)-O-CH_(3)`D. `CH_(3)-underset(O)underset(||)(C)-CH_(2)-underset(O)underset(||)(C)-CH_(3)` |
| Answer» Correct Answer - B | |
| 186. |
Which molecule has higher enol contentA. `CH_(3)-underset(O)underset(||)(C)-CH_(3)`B. `CH_(3)-underset(O)underset(||)(C)-underset(O)underset(||)(C)-CH_(3)`C. `CH_(3)-underset(O)underset(||)(C)-CH_(2)-underset(O)underset(||)(C)-CH_(3)`D. |
| Answer» Correct Answer - C | |
| 187. |
The two compound may be considered as : `CH_(3)=overset(O)overset(||)(C)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-CH_(3)` and `CH_(3)-overset(CH_(3))overset(|)(CH)-overset(O)overset(||)(C)-CH_(2)CH_(3)`A. Position isomerB. chain isomerC. stereoismerD. taytomers |
| Answer» Correct Answer - B | |
| 188. |
Which forms is more stable for `CH_(3)-underset(O)underset(||)(C)-CH_(3)`A. enol-formB. keto formC. both form are equally stableD. keto and enol form does not exist |
| Answer» Correct Answer - B | |
| 189. |
which molecule does not express TautomerismA. `(CH_(3))_(3)C CHO`B. `CH_(3)CHO`C. `CH_(3)-underset(O)underset(||)(C)-CH_(3)`D. `CH_(3)-CH_(2)CHO` |
| Answer» Correct Answer - A | |
| 190. |
The molecules which exhibit metamerims areA. `C_(4)H_(10)O`(ethers)B. `C_(4)H_(8)` (alkene)C. `C_(5)H_(10)O`(ketone)D. `C_(4)H_(11)`(amine) |
| Answer» Correct Answer - A::C::D | |
| 191. |
Diethyle amine and methyle propyl amine express which type of isomers.A. functional isomersB. position isomersC. metamersD. chain isomers |
| Answer» Correct Answer - C | |
| 192. |
The given pair are : A. enantiomersB. diastereomersC. homomersD. Constitutional isomer |
| Answer» Correct Answer - D | |
| 193. |
How many stereoismers are possible for the following compound? |
| Answer» Correct Answer - 8 | |
| 194. |
Number of stereoismers of the given compound `CH_(3)-CH=CH-overset(OH)overset(|)(CH)-CH_(3)` isA. 2B. 4C. 3D. 6 |
| Answer» Correct Answer - B | |
| 195. |
The type of isomerism exihibited by the compound with formula `C_(4)H_(10)O` is :A. Chain and positionB. Functional and positionC. MetamerismD. Chain, position, functional, and metamerism |
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Answer» Correct Answer - D D.U. in `C_(4)H_(10)O=((2n_(C)+2)-n_(H))/(2)=(10-10)/(2)=0` It should be alcohol or ether. (i) Alcohols and ethers are functional isomers. ii. Alcohol shows position and chain isomerism. iii. Ether shows position isomerism and metamerism. So, the compound `(C_(4)H_(10)O)` shows chain, position, functional isomerisms, and metamerism. |
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| 196. |
Which of the following statements are wrong?A. Ethyl benzene is the chain isomer of xylene.B. Alkenes can exhibit the position, chain, functional, and geometrical isomerism.C. Esters and carboxylic acids are examples of metamerism.D. Metamers belong to different classes of compounds. |
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Answer» Correct Answer - C::D c. Example of functional isomerism d. Belongs to the same class of compounds |
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| 197. |
Which fo the following peresent E from?A. B. C. D. |
| Answer» Correct Answer - a,b,d | |
| 198. |
Match the following columns : |
| Answer» Correct Answer - a-p,q,r ; b-q,r,s ; c-q,r,s ; d-p,q,r | |
| 199. |
This compound shows :A. geometrical isomerismB. opticalisomerismC. both (a) and (b)D. none of these |
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Answer» Correct Answer - d Cyclohexene do not show geometrical isomerism and the compound given is incapable of showing optical isomerism. |
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| 200. |
A racemic mixtrue is optically inactive due to :A. The presence of plane of symmetryB. External compensationC. Internal compensationD. None of these |
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Answer» Correct Answer - B A racemic mixtrue is optically inactive due to the external compensation of equal percentage of `(+)` and `(-)` forms. |
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