Description : Which of the following represents a racemic mixture? (a) 75% (R)-2-butanol, 25% (S)-2-butanol (b) 25% (R)-2-butanol, 75% (S)-2-butanol (c) 50% (R)-2-butanol, 50% (S)-2-butanol (d) none of the above
Last Answer : 50% (R)-2-butanol, 50% (S)-2-butanol
Description : The reaction `RCH_(2)CH_(2)COOH overset(Red P)underset(Br_(2))toRCH_(2)-underset(Br)underset(|)(C)HCOOH` is called as
Last Answer : The reaction `RCH_(2)CH_(2)COOH overset(Red P)underset(Br_(2))toRCH_(2)-underset(Br) ... reaction C. Reimer Teimann reaction D. Sandmeyer reaction
Description : End product of the following reaction is `CH_(3)CH_(2)COOH overset(Cl_(2))underset(red P)to overset("alcoholic KOH")to`
Last Answer : End product of the following reaction is `CH_(3)CH_(2)COOH overset(Cl_(2))underset(red P)to overset(" ... |)(C)H_(2)underset(OH)underset(|)(C)HCOOH`
Description : `CH_(3)CH_(2)-CH_(2)-COOH overset("Red + P" +Br_(2))toCH_(3)-CH_(2)-underset(Br)underset(|)(CH)-COOH` This reaction is called
Last Answer : `CH_(3)CH_(2)-CH_(2)-COOH overset("Red + P" +Br_(2))toCH_(3)-CH_(2)-underset(Br)underset(|)(CH)-COOH` This reaction is called
Description : `CH_(3)COOH overset((i) PCl_(3)+Cl_(2) ("excess"))underset((ii) O_(2))to (X) overset(SOCl_2) to (Y) overset(H_(2)//Pd//BaSO_(4))to(Z) overset(OH^(-))t
Last Answer : `CH_(3)COOH overset((i) PCl_(3)+Cl_(2) ("excess"))underset((ii) O_(2))to (X) overset(SOCl_2) to (Y) ... W+S ` Write the structure of X,Y,Z , W and S
Description : An organic compound A,`C_(5)H_(8)O` reacts with `H_(2)O, NH_(3)` and `CH_(3)COOH` as described below A is
Last Answer : An organic compound A,`C_(5)H_(8)O` reacts with `H_(2)O, NH_(3)` and `CH_(3)COOH` as described ... 2))underset(||)(C)-underset(H)underset(|)(C)=O`
Description : `CH_(3) equiv C CH_(3) overset(Na, NH_(3) (i))(rarr) Q overset("dil. Cold")underset(KMnO_(4))(rarr) R` If Q is an unsaturated hydrocarbon then product
Last Answer : `CH_(3) equiv C CH_(3) overset(Na, NH_(3) (i))(rarr) Q overset("dil. Cold")underset(KMnO_(4))(rarr) R` If ... ii & iii B. i & ii C. only v D. only iv
Description : In the given reaction which one of the following statement is correct - `C_(6)H_(5)-underset(CH_(3))underset(|)(C)=O+NH_(2)-OH to "Oxime" overset(PCl_
Last Answer : In the given reaction which one of the following statement is correct - `C_(6)H_(5)- ... elimination reaction. D. oxime and amides are isomers.
Description : The final major product of the reaction is: `Ph-overset(OH)overset(|)underset(Ph)underset(|)(C)-underset(" "NH_(2))underset(|)(CH)-CH_(3)overset(NaNO_
Last Answer : The final major product of the reaction is: `Ph-overset(OH)overset(|)underset(Ph)underset(|)(C)-underset(" " ... (" "CH_(3))underset(|)(C)-CH_(3)`
Description : In the given reaction sequence `C_(6)H_(5)-CH_(2)-NH_(2) overset(CHCl_(3)//Alc.KOH)underset(Delta)rarr [X] overset(H_(2)O //NaOH)rarr [Y],[Y]` will be
Last Answer : In the given reaction sequence `C_(6)H_(5)-CH_(2)-NH_(2) overset(CHCl_(3)//Alc.KOH)underset(Delta)rarr [X] ... -NH_(2)` D. `C_(6)H_(5)-CH_(2)OH`
Description : At neutral pH Alanine has the following structure: (A) − − 2 3 H H N C COOH CH (B) + 3 − − 3 H H N C COO CH (C) 2 − − 3 H H N C COO CH (D) + 2 − − 3 H H N C COO CH
Last Answer : Answer : B
Description : In the following reaction, Alanine acts as a 3 3 3 3 + + → H H | | H N – – COO —— H N – – COOH C C | | CH CH (A) Acid (B) Base (C) Zwitter ion (D) None of these
Last Answer : Answer : C
Description : acetaldehyde reacts with a mixture of KCN and `NH_(4)Cl` to give a product X which upon hydrolysis yields alanine. The products X is
Last Answer : acetaldehyde reacts with a mixture of KCN and `NH_(4)Cl` to give a product X which upon ... . a cyanohydrin C. an aminoalcohol D. a chlorohydrin
Description : In the reaction, `C_(6)H_(5)NH_(2)underset(0-5^(@)C)overset(NaNO_(2)+HCl)rarr(A)underset(KCN)overset(CuCN)rarr(B)overset(H^(+)//H_(2)O)rarr(C)` the pr
Last Answer : In the reaction, `C_(6)H_(5)NH_(2)underset(0-5^(@)C)overset(NaNO_(2)+HCl)rarr(A)underset(KCN)overset(CuCN ... COOH` C. `C_(6)H_(5)OH` D. none of these
Description : Name the given reaction and enzyme involved in it `underset("Amino donor")(R_(1)-underset(NH_(3)^(+))underset(|)overset(H)overset(|)(C)-COO^(-)+unders
Last Answer : Name the given reaction and enzyme involved in it `underset("Amino donor")(R_(1)-underset(NH_(3)^(+)) ... underset(|)overset(H)overset(|)(C)-COO^(-)`
Description : The major product H in the given reaction sequence is `CH_(3)-CH_(2)-CO-CH_(3) overset(._(Theta)CN)toG overset(95% H_(2)SO_(4)) underset("Heat")toH`
Last Answer : The major product H in the given reaction sequence is `CH_(3)-CH_(2)-CO-CH_(3) overset(._(Theta)CN) ... CH=underset(CH_(3))underset(|)(C)-CO-NH_(2)`
Description : `Ph-CH=CH-underset(O)underset(C)-H overset((i) CH_(3)CH_(2)MgBr)to overset((ii) H_(3)O^(o+))to(X) overset(Cu,Delta)to(Y)`
Last Answer : `Ph-CH=CH-underset(O)underset(C)-H overset((i) CH_(3)CH_(2)MgBr)to overset((ii) H_(3)O^(o+))to(X) ... -underset(O)underset(||)(C)-CH=CH-CH_(2)-CH_(3)`
Description : In the given reaction `{:(" "CH_(3)),(" |"),(H_(3)C-C-C-CHO),(" | ||"),(" "H_(3)C " "O):} overset("(i)Conc. NaOH")underset((ii)H^(+)) to` product is
Last Answer : In the given reaction `{:(" "CH_(3)),(" |"),(H_(3)C-C-C-CHO),(" | ||"),(" "H_(3)C " "O):} overset("(i) ... )C-C-C-CH_2),(" | ||"),(" "H_(3)C " "OH):}`
Description : `{:(" "O^(16)),(" ||"),(CH_(3)-C-H overset(D_(2)O^(18))underset(D^(o+))to CH_(3)-C-H),(" ||"),(" "._(18)O):}` Give the following reaction intermediate
Last Answer : `{:(" "O^(16)),(" ||"),(CH_(3)-C-H overset(D_(2)O^(18))underset(D^(o+))to CH_(3)-C-H),(" ||"),(" "._( ... ,(" |"),(CH_(3)-C-H),(" |"),(" "._(18)OD):}`
Description : How many sterioisomers does the following compound have ? `CH_(3)-CH_(2)-underset(overset(|)(Br))(C)H-CH_(2)-CH=CH-CH_(3)`
Last Answer : How many sterioisomers does the following compound have ? `CH_(3)-CH_(2)-underset(overset(|)(Br))(C)H-CH_(2)-CH=CH-CH_(3)` A. None B. 2 C. 4 D. 6
Description : Total number of optically active stereoisomers of `CH_(3)-underset(overset(|)(CI))(C)H-CH=CH-underset(overset(|)(CI))(C)H-CH_(3)` are :
Last Answer : Total number of optically active stereoisomers of `CH_(3)-underset(overset(|)(CI))(C)H-CH=CH-underset(overset(|)(CI))(C)H-CH_(3)` are :
Description : Total number of stereoisomers of compound `CH_(3)-CH=CH-underset(overset(|)(CI))(C)H-CH=CH-CH_(3)` are :
Last Answer : Total number of stereoisomers of compound `CH_(3)-CH=CH-underset(overset(|)(CI))(C)H-CH=CH-CH_(3)` are :
Description : Total number of optically stereoisomers of `CH_(3)-underset(overset(|)(CI))(C)H-underset(overset(|)(CI))(C)H-underset(overset(|)(CI))(C)H-CH_(3)`
Last Answer : Total number of optically stereoisomers of `CH_(3)-underset(overset(|)(CI))(C)H-underset(overset(|)(CI))(C)H-underset( ... CH_(3)` A. 2 B. 4 C. 6 D. 8
Description : Total number of stereoisomers of compound is: `CH_(3)-underset(overset(|)(OH))(C)H-underset(overset(|)(Br))(C)H-CH_(3)`
Last Answer : Total number of stereoisomers of compound is: `CH_(3)-underset(overset(|)(OH))(C)H-underset(overset(|)(Br))(C)H-CH_(3)` A. 2 B. 4 C. 6 D. 8
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 : The end product (B) of the reaction sequence: `C_(2)H_(5)-underset(H)underset(|)(N)-CH_(3) overset(Ph-overset(O)overset(||)(C)-Cl)underset(NaOH)rarrA
Last Answer : The end product (B) of the reaction sequence: `C_(2)H_(5)-underset(H)underset(|)(N)-CH_(3) overset(Ph-overset ... )underset(H_(2)O)rarr B` A. B. C. D.
Description : `CH_(3)-CH_(2)-CH_(2)-underset(OH)underset(|)(CH)-CH_(3) underset(-H_(2)O)overset(H^(o+))rarr[F] overset(Br_(2)//C Cl_(4))rarrC_(5)H_(10)Br_(2)(G)` Ho
Last Answer : `CH_(3)-CH_(2)-CH_(2)-underset(OH)underset(|)(CH)-CH_(3) underset(-H_(2)O)overset(H^(o+))rarr[F] ... (including all stereoisomers) A. 2 B. 6 C. 3 D. 5
Description : `C_(2)H_(5)OH overset(KMnO_(4)//H^(oplus))rarrX underset(H_(2)SO_(4))overset(Y)rarr CH_(3)COOC_(2)H_(5)`, X and Y respectively are
Last Answer : `C_(2)H_(5)OH overset(KMnO_(4)//H^(oplus))rarrX underset(H_(2)SO_(4))overset(Y)rarr CH_(3)COOC_(2)H_(5)` ... CH_(3)COOH` D. `CH_(3)COOH, C_(2)H_(5)OH`
Description : The decreasing order of strength of the bases, `OH^(-), NH_(2)^(-), H-C-=C^(-)` and `CH_(3)-CH_(2)^(-)`:
Last Answer : The decreasing order of strength of the bases, `OH^(-), NH_(2)^(-), H-C-=C^(-)` and `CH_(3)-CH_(2)^(-)`: ... " IV"` D. `"II "gt" III "gt" I "gt" IV"`
Description : Which of the following can distinguish? `CH_(3)-overset(CH_(3))overset(|)(CH)-NH_(2)` and `CH_(3)-overset(H)overset(|)(N)-CH_(3)`
Last Answer : Which of the following can distinguish? `CH_(3)-overset(CH_(3))overset(|)(CH)-NH_(2)` and `CH_(3)-overset(H ... `Cs_(2),HgCI_(2)` D. `Ag_(2)O //Delta`
Description : S.L. Miller an American scientist created electric discharge experiment in a closed flask containing `CH_(4),H_(2),NH_(3)` and water vapour at what te
Last Answer : S.L. Miller an American scientist created electric discharge experiment in a closed flask containing `CH_(4),H_(2),NH_ ... . `200^(@)C` D. `1000^(@)C`
Description : An amino acid not containing the usual— COOH group is (A) Alanine (B) Tryptophan (C) Methionine (D) Taurine
Last Answer : Answer : D
Description : Which of following compounds exists as non-resolvable racemic mixture?
Last Answer : Which of following compounds exists as non-resolvable racemic mixture? A. B. C. 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 : Enzyme catalyzed hydrolysis of proteins produces amino acid of the form (A) D (B) DL (C) L (D) Racemic
Description : What is the major product obtained from the following reactions ? `CH_(3)COCH_(2)COOH overset("heat")to` product
Last Answer : What is the major product obtained from the following reactions ? `CH_(3)COCH_(2)COOH overset("heat")to` ... -overset(OH)overset(|)(C)=CH_(2)` D.
Description : The product P of the following reaction is `CH_(3)-COOH overset(LiAlH_(4))to overset(SOCl_(2))to overset(Koverset(14)(C)N)to overset(H_(3)O^(o+)) to P
Last Answer : The product P of the following reaction is `CH_(3)-COOH overset(LiAlH_(4))to overset(SOCl_(2))to overset(Koverset ... )N)to overset(H_(3)O^(o+)) to P`
Description : Which one of the following is correct? Formic acid has lower `pK_(a)` than that of `CH_(3)COOH` because:
Last Answer : Which one of the following is correct? Formic acid has lower `pK_(a)` than that of `CH_(3) ... acetic acid D. formic acid is a strong reducing agent
Description : Which is the increasing order of acidic strength in the following compounds ? `CH_(3)CH_(2)CH_(2)COOH(I), "NCCH"_(2)COOH(II), H_(2)C=CHCH_(2)COOH(III)
Last Answer : Which is the increasing order of acidic strength in the following compounds ? `CH_(3)CH_(2)CH_(2) ... B. `IltIIIltII` C. `IIIltIIltI` D. `IIltIltIII`
Description : Which is decreasing order of acidity in, `HCOOH(I), CH_(3)COOH(II), CH_(3)CH_(2)COOH(III) and C_(6)H_(5)COOH(IV)`?
Last Answer : Which is decreasing order of acidity in, `HCOOH(I), CH_(3)COOH(II), CH_(3)CH_(2)COOH( ... B. `IVgtIIIgtIIgtI` C. `IVgtIgtIIgtIII` D. `IgtIVgtIIgtIII`
Description : An alcohol on oxidation is found to given `CH_(3)COOH` and `CH_(3)CH_(2)COOH`. The structure of the alcohol is
Last Answer : An alcohol on oxidation is found to given `CH_(3)COOH` and `CH_(3)CH_(2)COOH`. The structure of the alcohol is ... `CH_(3)CH (OH) CH_(2)CH_(2) CH_(3)`
Description : The enantiomeric excess and observed rotation of a mixture containing 6 gm of (+)-2-butanol and 4 gm of (-)-2-butanol are respectively (if the specifi
Last Answer : The enantiomeric excess and observed rotation of a mixture containing 6 gm of (+)-2-butanol and 4 gm of (-)-2- ... . 20%, + 2.7 unit D. 80%, - 27 unit