Description : Molecular formula of smallest ester which contain one chiral carbon is :
Last Answer : Molecular formula of smallest ester which contain one chiral carbon is : A. `C_(4)H_(8)O_(2)` B. `C_(5)H_(12)O ... )H_(12)O_(2)` D. `C_(5)H_(10)O_(2)`
Description : Compound A is chiral and has the molecular formula `C_(8)H_(11)N`. When A reacts nitrous acid then occurs a brisk evolution of `N_(2)` gas. A dissolve
Last Answer : Compound A is chiral and has the molecular formula `C_(8)H_(11)N`. When A reacts ... . 1-phenylethanamine C. 1-cyclohexylethanamine D. N-ethylaniline
Description : Consider a small aliphatic 1° amine, 1° alcohol, ester, carboxylic acid, and amide, all of similar molecular weight. Which one is most likely to have the highest boiling point? (a) The amide (b) The alcohol (c) The ester (d) The carboxylic acid
Last Answer : The amide
Description : A hydrocarbon contain `80%` C . The vapour density of compound in 30 . Molecular formula of compound is :-
Last Answer : A hydrocarbon contain `80%` C . The vapour density of compound in 30 . Molecular formula of compound is :- A. ` ... ` C. `C_(4)H_(12)` D. All of these
Description : Most animal tissues contain appreciable amounts of lipid, when in the form of depot fat it consists largely of (A) Cholesterol ester (B) Phosphatides (C) Chylomicrons (D) Triacylglycerol
Last Answer : Answer : D
Description : How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?
Last Answer : How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?
Description : Number of chiral carbon persent in the following compound: `CH_(3)-underset(overset(|)(OH))(C)H-CH_(2)-underset(overset(|)(Br))(C)H-underset(overset(|
Last Answer : Number of chiral carbon persent in the following compound: `CH_(3)-underset(overset(|)(OH))(C)H-CH_(2)-underset(overset( ... (3)` A. 2 B. 3 C. 4 D. 5
Description : Number of chiral carbon atoms in the compound W, X, Y and Z respectively would be :
Last Answer : Number of chiral carbon atoms in the compound W, X, Y and Z respectively would be :
Description : Glycine is a unique amino acid because it (a) has no chiral carbon (b) has a sulfur containing R group (c) cannot form a peptide bond (d) is an essential amino acid
Last Answer : has no chiral carbon
Description : What is the Formula for ethyl ester?
Last Answer : what is the formula of the ester formed from a reaction ofsodium hydroxide and ethanol
Description : The general formula of a homologous series of carbon compounds is C n H 2n . Write the molecular formula of the second and fourth member of the series.
Last Answer : Second member is n=3, C 3 H 2x3 = C 3 H 6 Fourth member is n=5, C 5 H 2x5 = C 5 H 10
Description : Write the molecular formulae of the third and fifth member of homologous series of carbon compounds represented by the general formula C n H 2n+2
Last Answer : Third member n = 3, C 3 H 2x3+2 = C 3 H 8 Fifth member n = 5, C 5 H 2x5+2 = C 5 H 12
Description : An organic compound (A) has a molecular weight 78 and an empirical formula CH. (A) is resistant to attack by oxidizing agents but undergoes substitution and addition reactions. X-ray analysis shows that the ... suggests that compound (A) is (a) Benzene (b) Cyclohexane (c) Toluene (d) n-Hexane
Last Answer : Benzene
Description : The carbon of the pentose in ester linkage with the phosphate in a nucleotide structure is (A) C1 (B) C3 (C) C4 (D) C5
Description : Why do aldehydes undergo nucleophilic addition reactions while esters undergo nucleophilic acyl substitution reactions? (a) The carbonyl carbon of an ester is more electrophilic than that of an aldehyde. (b) ... adds to an aldehyde, neither H− nor R− can be eliminated since they are strongly basic
Last Answer : Once the nucleophile adds to an aldehyde, neither H− nor R− can be eliminated since they are strongly basic
Description : The bacterium Deinococcus radiodurans has been of interest to molecular biologists because a. it has the smallest known bacterial genome. b. it is a "living fossil" linking the Bacteria and Archaea. c. it has the largest known bacterial genome. d. it is very resistant to radiation damage.
Last Answer : d. it is very resistant to radiation damage.
Description : Among the isomers of Dimethylcyclohexanes, the chiral ones are
Last Answer : Among the isomers of Dimethylcyclohexanes, the chiral ones are A. 1, 2-trans and 1,3-cis B. 1, 2-cis and 1, ... 1, 4-tans D. 1, 2-trans and 1, 3-trans
Description : Which of the following molecule is chiral.
Last Answer : Which of the following molecule is chiral. A. B. C. D.
Description : Which of the following is/are chiral?
Last Answer : Which of the following is/are chiral? A. B. C. D.
Description : Which of the following are chiral:
Last Answer : Which of the following are chiral: A. `1, 2, 3` B. `1, 2, 4` C. `2, 3, 4` D. `1, 3, 4`
Description : The compound which has maximum number of chiral centres is
Last Answer : The compound which has maximum number of chiral centres is A. B. C. D.
Description : Chiral molecules are :
Last Answer : Chiral molecules are : A. Superimposable on their mirro image B. Not superimposable on ... molecules D. capable of showing geometrical isomerism
Description : Which of the following are chiral compound.
Last Answer : Which of the following are chiral compound.
Description : Which of the following are chiral molecules
Last Answer : Which of the following are chiral molecules
Description : Among the following, the chiral complex is :
Last Answer : Among the following, the chiral complex is : A. `[Cr(OX)_(3)]^(3-)` B. `cis-[PtCl_(2)(en)]` C. `cis-[ ... (3))_(4)]^(+)` D. `trans-[PtCl_(2)(en)]`
Description : In the `S_(N^(1))` reaction on chiral centres there is :
Last Answer : In the `S_(N^(1))` reaction on chiral centres there is : A. `100%` racemization B. ... partial racemization C. `100%` retention D. `100%` inversion
Description : A chiral `C_(5)H_(10)O` alcohol is reduced by catalytic hydrogenation to an achiral `C_(5)H_(12)O` alcohol. The original alcohol is oxidized by activa
Last Answer : A chiral `C_(5)H_(10)O` alcohol is reduced by catalytic hydrogenation to an achiral `C_(5)H_(12)O` alcohol ... -2-buten-1-ol D. 2-methyl-2-buten-1-ol
Description : All the standard amino acids except the following have one chiral ‘c’ atom: (A) Threonine, Isoleucine (B) Isoleucine, Alanine (C) Threonine, Alanine (D) Alanine, Glutamine
Last Answer : Answer : C
Description : All chiral D-sugars rotate plane-polarized light : (a) clockwise (b) counterclockwise (c) +20.0° (d) in a direction that cannot be predicted but must be determined experimentally
Last Answer : in a direction that cannot be predicted but must be determined experimentally
Description : Which of the following compounds is never chiral? (a) 2,3-dibromobutane (b) 1,3-dibromobutane (c) 1,2-dichlorobutane (d) 1,4-dibromobutane
Last Answer : 1,4-dibromobutane
Description : Which of the following is a true statement? (a) All chiral molecules possess a plane of symmetry. (b) All achiral molecules are meso. (c) All molecules which possess a single asymmetric center of the S configuration are levorotatory. (d) A mixture of achiral compounds will be optically inactive
Last Answer : A mixture of achiral compounds will be optically inactive
Description : A meso compound : (a) is an achiral molecule which contains chiral carbons (b) contains a plane of symmetry or a centre of symmetry (c) is optically inactive (d) is characterized by all of the above
Last Answer : ) is characterized by all of the above
Description : Plane-polarized light is affected by (a) Identical molecules (b) All polymers (c) Chiral molecules (d) All biomolecules
Last Answer : Chiral molecules
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 : A molecule is said to be chiral (a) if it contains plane of symmetry (b) if it contains centre of symmetry (c) if it cannot be superimposed on its mirror image (d) if it can be superimposed on its mirror image
Last Answer : if it cannot be superimposed on its mirror image
Description : Ethambutol molecule has (A) two chiral centers and 3 stereoisomers (B) two chiral centers and 4 stereoisomers (C) two chiral centers and 2 stereoisomers (D) one chiral center and 2 stereoisomers
Last Answer : (B) two chiral centers and 4 stereoisomers
Description : How can separation of chiral chemicals affect the chemical and/or pharmaceutical industries?
Last Answer : This enantiomers (left or right [R] oriented) versions of the same compound can have very different properties; this development has been significant particularly in the pharmaceutical industry. For example ... By chiral separation, the most of the side effects of Seldane were avoided in Allegra.
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 : Which of the following contain maximum number of electrons in the antibonding molecular orbitals
Last Answer : Which of the following contain maximum number of electrons in the antibonding molecular orbitals A. `O_(2)^(2-)` B. `O_ ... O_(2)^(-1)` D. `O_(2)^(+)`
Description : Honey contain glucose and fructose along with some other ingredients, it has greater viscosity due to------? A. hydrogen bonding B. irregular shape of the molecules C. irregular shape of the molecules and strong inter-molecular forces (Answer) D. greater molecular size
Last Answer : C. irregular shape of the molecules and strong inter-molecular forces (Answer)
Description : The role of molecular chaperones is to A-facilitate binding of ribosomes to mRNA B-degrade newly synthesized polypeptides that contain inaccurate sequences C-.facilitate binding of RNA polymerase to DNA D-aid a newly synthesized polypeptide in folding to its proper shape
Last Answer : -aid a newly synthesized polypeptide in folding to its proper shape
Last Answer : aid a newly synthesized polypeptide in folding to its proper shape
Description : According to Avogadro's law A. the product of the gas constant and the molecular mass of an ideal gas is constant B. the sum of partial pressure of the mixture of two gases is sum of the ... all gases, at the same temperature and pressure, contain equal number of molecules D. all of the above
Last Answer : Answer: C
Description : What is the difference in the molecular formula of any two consecutive members of a homologous series of organic compounds? -Chemistry
Last Answer : —CH2— is the difference in the molecular formula of any two consecutive members of a homologous series of organic compounds.
Description : Write the molecular formula of first two members of homologous series having functional group – OH. -Science
Last Answer : The general formula for the homologous series of functional group −OH is CnH2n+1OH. The two consecutive members of this series are: a. CH3OH(Methanol) b. CH3CH2OH (Ethanol) where n is 1 and 2 respectivelyThe molecular formula for both of them are CH4O and C2H6O.
Description : What is formula unit of mass? How is it different from molecular mass? -Chemistry 9th
Last Answer : The formula unit mass in chemistry is the empherical formula of any ionic or covalent network solid compound used as an independent entity for stoichiometry calculations. It is the lowest whole number ratio ... atoms in its emperical formula while molar mass is the mass of 1 gram mole of substance.
Description : 44 g of a sample of organic compound on complet combustion gives 88 g `CO_(2)` and 36 g of `H_(2)O` . The molecular formula of the compound may be :-
Last Answer : 44 g of a sample of organic compound on complet combustion gives 88 g `CO_(2)` and 36 g of `H_(2)O` . The ... . `C_(2)H_(4)O` D. `C_(3)H_(6)O`