Description : Diethyl ether and methyl propyl ether are (a) Conformational isomers (b) Metamers (c) Geometrical isomers (d) Enantiomers
Last Answer : Metamers
Description : Optical isomers that are not mirror images are called (a) Diastereomers (b) Enantiomers (c) Metamers (d) Meso compounds
Last Answer : Diastereomers
Description : Optical isomers that are mirror images are called : (a) Tautomers (b) Diastereomers (c) Enantiomers (d) Metamers
Last Answer : Enantiomers
Description : n-Propyl iodide reacts with sodium ethoxide to give : (a) CH3CH2OCH2CH3 (b) CH3CH2OCH2CH2CH3 (c) CH3CH2OCH3 (d) CH3OCH2CH2CH3
Last Answer : CH3CH2OCH2CH2CH3
Description : Which of the statements is false regarding chiral compounds? (a) rotate the plane of polarized light (b) have cis and trans isomers (c) exist as enantiomers (d) can be detected with a polarimeter
Last Answer : have cis and trans isomers
Description : What is the name given to the non-superimposable mirror image forms of chiral compounds? w) cis-trans x) enantiomers y) functional isomers z) diasteriomers
Last Answer : ANSWER: X -- ENANTIOMERS
Description : What is the term used for isomers that are in rapid equilibrium? (a) keto-enol tautomers (b) constitutional isomers (c) conformational isomers (d) cis-trans isomers
Last Answer : keto-enol tautomers
Description : α-D-Glucose is different from β-D-glucose (a) in the configuration at C-1 (b) because they are mirror images of each other (c) because they are enantiomers (d) because they are geometrical isomers
Last Answer : in the configuration at C-1
Description : Which of the statements is correct about diastereomers? (a) They are stereoisomers that are not enantiomers. (b) They are a pair of identical isomers. (c) They are a pair of isomers that are mirror images. (d) All their asymmetric centers are the same.
Last Answer : They are stereoisomers that are not enantiomers
Description : . A and B are stereoisomers. They are nonsuperimposable and are mirror images of one another. Which of the following best describes the relationship between A and B? (a) structural isomers (b) enantiomers (c) cis-trans isomers (d) diastereomers
Last Answer : enantiomers
Description : Ethanol (CH3CH2OH) and dimethyl ether (CH3OCH3) are best considered : (a) structural isomers (b) stereoisomers (c) enantiomers (d) diastereomers
Last Answer : structural isomers
Description : Which of the following pairs of compounds will not form hydrogen bonds with each other? (a) CH3OH and CH3CH2OH (b) CH3SH and CH3CH2SH (c) CH3OCH3 and CH3CH2OCH2CH3 (d) CH3COOH and H2O
Last Answer : CH3OCH3 and CH3CH2OCH2CH3
Description : Number of conformational isomers of ethane.
Last Answer : Number of conformational isomers of ethane. A. 7 B. 3 C. 4 D. Infinite
Description : Compounds having the same structural formula but differing in spatial configuration are known as (A) Stereoisomers (B) Anomers (C) Optical isomers (D) Epimers
Last Answer : A
Last Answer : (A) Stereoisomers
Description : Which of the following paris of compounds are enantiomers :
Last Answer : Which of the following paris of compounds are enantiomers : A. B. C. D.
Description : Identify the pairs of enantiomers and diastereomers from the following compounds I, II, and III :
Last Answer : Identify the pairs of enantiomers and diastereomers from the following compounds I, II, and III :
Description : The product of the reaction of ethylene oxide with acidic methanol is (a) CH3OCH2CH2OH (b) CH3CH2CH2CH2OH (c) HOCH2CH2OH (d) CH3CH2OCH2CH3
Last Answer : CH3OCH2CH2OH
Description : Which of the following has the highest boiling point? (a) CH3CH2CH2CH2Cl (b) HOCH2CH2CH2CH2OH (c) CH3CH2CH2CH2OH (d) CH3CH2OCH2CH3
Last Answer : HOCH2CH2CH2CH2OH
Description : For the complex [Fe(en)2Cl2], Cl, (en = ethylene diamine), identify (i) the oxidation number of iron, (ii) the hybrid orbitals and the shape of the complex, (iii) the magnetic behaviour of the complex, (iv) ... an optical isomer also, and (vi) name of the complex. (At. no. of Fe = 26) \ -Chemistry
Last Answer : i) [Fe(en)2Cl2] Cl or x + 0 + 2 (-1) + (-1) = 0 x + (- 3) = 0 or x = + 3 ∴ Oxidation number of iron, x = + 3 (ii) The complex has two bidentate ligands and two ... )2Cl2] Cl, only cis-isomer shows optical isomerism. (vi) Name of complex: Dichloridobis (ethane-1, 2- diamine) Iron (III) chloride
Description : How many optical isomers are possible for lactic acid? (a) 2 (b) 4 (c) 6 (d) 8
Last Answer : 2
Description : What is the possible number of optical isomers for a compound containing 2 dissimilar asymmetric carbon atoms? (a) 2 (b) 4 (c) 6 (d) 8
Last Answer : 4
Description : What is the possible number of optical isomers for a compound containing n dissimilar asymmetric carbon atoms? (a) n2 (b) 2n (c) n + 1 (d) n + 2
Last Answer : 2n
Description : It is possible to distinguish between optical isomers (a) by using chemical tests (b) by mass spectrometry (c) by IR spectroscopy (d) by polarimetry
Last Answer : (d) by polarimetry
Description : Optical isomers are ------. a. Identical structures b. Not mirror images of each other c. Non super-imposable mirror images of each other. d. Super-imposable mirror images of each other
Last Answer : c. Non super-imposable mirror images of each other.
Description : Define metamers with example.
Last Answer : Ans: It arises due to different alkyl chains on either side of the functional group in the molecule. For example, C4H10O represents methoxypropane (CH3OC3H7) and ethoxyethane (C2H5OC2H5).
Description : Compounds with identical molecular formula but different structures are called - (1) Tetravalent compounds (2) Structural isomers (3) Covalent compounds (4) None of the above
Last Answer : (2) Structural isomers Explanation: Structures with identical molecular formula but different structures are called structural isomers. Eg: Butane.
Description : Which of the following compounds may exist as cis-trans isomers? (a) 1-Butene (b) 2-Butene (c) Cyclopropane (d) Acetone
Last Answer : 2-Butene
Description : Compounds with the same molecular formula but different structural formulas are called (a) Alkoxides (b) Iso compounds (c) Isomers (d) Ortho compounds
Last Answer : Isomers
Description : Two compounds have the same composition and also have the same atoms attached to the same atoms, although with different orientations in space. These compounds are (a) Identical (b) Position isomers (c) Structural isomers (d) Stereoisomers
Last Answer : Stereoisomers
Description : Planar Platinum compounds are being investigated in the treatment of cancer. Name the isomers of dichlorodiamineplatinum(II) (pron: die-klor-o-di-a-MIN-e-plat-i-num two)?
Last Answer : ANSWER: CIS AND TRANS (DICHLORODIAMINEPLATINUM (II)
Description : The complex ion . `[M(en)Br_(2)I_(2)]^(-1)`, has two optical isomers. Their correct configurations are:
Last Answer : The complex ion . `[M(en)Br_(2)I_(2)]^(-1)`, has two optical isomers. Their correct configurations are: A. B. C. D.
Description : Optical isomers of all aminoacids exist except (A) Glycine (B) Arginine (C) Alanine (D) Hydroxy proline
Last Answer : Answer : A
Description : Optical isomers that are mirror images and non superimposable are called (A) Diastereomers (B) Euantiomers (C) dl isomers (D) Stereomers
Last Answer : Answer : B
Description : This amino acid cannot have optical isomers: (A) Alanine (B) Histidine (C) Threonine (D) Glycine
Last Answer : Answer : D
Description : Isomers differing as a result of variations in configuration of the —OH and —H on carbon atoms 2, 3 and 4 of glucose are known as (A) Epimers (B) Anomers (C) Optical isomers (D) Steroisomers
Description : Two sugars which differ from one another only in configuration around a single carbon atom are termed (A) Epimers (B) Anomers (C) Optical isomers (D) Stereoisomers
Description : A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. mxylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture? (A) The mixture exhibits ... : o-xylene 30, p-xylene 60 and m-xyoene 10 (D) The mixture contain optical isomers
Last Answer : (A) The mixture exhibits an azeotrope at 101.3 kPa
Last Answer : (A) Epimers
Description : Which of the following is a pair of metamers ?
Last Answer : Which of the following is a pair of metamers ? A. `CH_(3)-CH_(2)-overset(O)overset(||)(C)-OH and CH_(3)- ... )overset(||)(C)-CH_(3)-CH_(2)-CH_(3)` D.
Description : Which of the following is/are optically inactive? (a) a 50-50 mixture of R and S enantiomers (b) a meso compound (c) a racemic mixture (d) all the above
Last Answer : all the above
Description : Which of the following is not true of enantiomers? (a) They have the same melting point. (b) They have the same boiling point. (c) They have the same density. (d) They have the same specific rotation.
Last Answer : They have the same specific rotation.
Description : Which of the following statements is correct concerning a pair of enantiomers? (a) They rotate the plane of polarized light by exactly the same amount and in opposite directions. (b) They rotate ... polarized light by differing amounts and in the same direction. (d) They have different melting point
Last Answer : They rotate the plane of polarized light by exactly the same amount and in opposite directions.
Description : Which of the following statements is false about enantiomers? (a) rotate plane-polarized light (b) are superimposable mirror images (c) are nonsuperimposable mirror images (d) have the same melting point
Last Answer : are superimposable mirror images
Description : Enantiomers have which of the following characteristics? (a) rotate ordinary light (b) have the same melting point (c) are superimposable mirror images (d) react with optically active molecules at the same rate
Last Answer : have the same melting point
Description : Which of the following is optically inactive? a. equimolar mixture of enantiomers b. Solution of pure enantiomer c. Mixture of enantiomers with enantiomeric excess of one isomer d. Molecule without symmetry elements
Last Answer : a. equimolar mixture of enantiomers
Description : Find the number of geometrical isomers possible of the following compounds.
Last Answer : Find the number of geometrical isomers possible of the following compounds.
Description : Geometric isomers would be expected for which of the following compounds
Last Answer : Geometric isomers would be expected for which of the following compounds A. `[Zn(NH_(3))_(4)]^(2+)` B. `[Pt(NH_( ... _(3)Cl]^(+)` D. `K_(2)[CuCl_(4)]`
Description : Which one of following pairs of compounds are functional isomers of each other
Last Answer : Which one of following pairs of compounds are functional isomers of each other A. `CH_(3)CH_(2)CH_(2)OH, CH_( ... CH_(2)CH_(2)OH, CH_(3)OCH_(2)CH_(3)`