As `S_(N^(2))` reaction at an asymmetric carbon of a compound always gives:

As `S_(N^(2))` reaction at an asymmetric carbon of a compound always gives:
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As `S_(N^(2))` reaction at an asymmetric carbon of a compound always gives: A. an ... C. a mixture of diastereomers D. a single stereoisomer
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An optically active compound (a) must contain atleast four carbons (b) when in solution rotate the plane of polarized light (c) must always contain an asymmetric carbon atom (d) in solution always give a negative reading in polarimeter

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The hydrolysis of 2-bromo-3-methylbutane by `S_(N^(1))` mechanism gives meinly:

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Last Answer : The hydrolysis of 2-bromo-3-methylbutane by `S_(N^(1))` mechanism gives meinly: A. 3-methyl-2- ... . 2,2-dimethyl-2-propanol D. 2-methyl-1-butanol

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Aqueous solution of `Na_(2)S_(2)O_(3)` on reaction with `CI_(2)`, gives

Description : Aqueous solution of `Na_(2)S_(2)O_(3)` on reaction with `CI_(2)`, gives

Last Answer : Aqueous solution of `Na_(2)S_(2)O_(3)` on reaction with `CI_(2)`, gives A. `Na_(2)S_(2)O_(6)` B. `NaHSO_(4)` C. `NaCl` D. `NaOH`

Aqueous solution of `Na_(2)S_(2)O_(3)` on reaction with `CI_(2)`, gives

Description : Aqueous solution of `Na_(2)S_(2)O_(3)` on reaction with `CI_(2)`, gives

Last Answer : Aqueous solution of `Na_(2)S_(2)O_(3)` on reaction with `CI_(2)`, gives A. `Na_(2)S_(2)O_(6)` B. `NaHSO_(4)` C. `NaCl` D. `NaOH`

Aqueous solution of `Na_(2)S_(2)O_(3)` on reaction with `CI_(2)`, gives

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All α-amino acids have one asymmetric carbon atom except (A) Arginine (B) Glycine (C) Aspartic acid (D) Histidine

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All amino acids have one asymmetric carbon atom, except (A) Arginine (B) Aspargine (C) Histidine (D) Glycine

Description : All amino acids have one asymmetric carbon atom, except (A) Arginine (B) Aspargine (C) Histidine (D) Glycine

Last Answer : Answer : D

The carbon atom wh ich becomes asymmetric when the straight chain form of monosaccharide changes into ring form is known as CARBOHYDRATES AND CARBOHYDRATE METABOLISM 9 (A) Anomeric carbon atom (B) Epimeric carbon atom (C) Isomeric carbon atom (D) None of these

Description : The carbon atom wh ich becomes asymmetric when the straight chain form of monosaccharide changes into ring form is known as CARBOHYDRATES AND CARBOHYDRATE METABOLISM 9 (A) Anomeric carbon atom (B) Epimeric carbon atom (C) Isomeric carbon atom (D) None of these

Last Answer : A

The number of asymmetric carbon atoms in the α-D-glucopyranose molecule is : (a) 2 (b) 3 (c) 4 (d) 5

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The designation D or Lbefore the name of a monosaccharide (a) indicates the direction of rotation of polarized light. (b) indicates the length of the carbon chain in the carbohydrate. (c) indicates the position of the OH group on the carbon next to the primary alcohol group. (d) indicates the position of the asymmetric carbon atoms in the carbohydrate.

Description : The designation D or Lbefore the name of a monosaccharide (a) indicates the direction of rotation of polarized light. (b) indicates the length of the carbon chain in the carbohydrate. (c) ... the primary alcohol group. (d) indicates the position of the asymmetric carbon atoms in the carbohydrate.

Last Answer : indicates the position of the OH group on the carbon next to the primary alcohol group.

2-Butanol is optically active because it contains : (a) an asymmetric carbon (b) a plane of symmetry (c) a hydroxyl group(d) a centre of symmetry

Description : 2-Butanol is optically active because it contains : (a) an asymmetric carbon (b) a plane of symmetry (c) a hydroxyl group (d) a centre of symmetry

Last Answer : (a) an asymmetric carbon

(A) `S_(N^(2))` reactioin takes place in single step. (R) `S_(N^(2))` reaction involves transition state intermediate.

Description : (A) `S_(N^(2))` reactioin takes place in single step. (R) `S_(N^(2))` reaction involves transition state intermediate.

Last Answer : (A) `S_(N^(2))` reactioin takes place in single step. (R) `S_(N^(2))` reaction involves transition ... . D. IF (A) is incorrect but (R) is correct.

Which of the following are correct for `S_(N^(2))` reaction?

Description : Which of the following are correct for `S_(N^(2))` reaction?

Last Answer : Which of the following are correct for `S_(N^(2))` reaction? A. The reaction intermediate ... solvents D. It is favoured by stability of carbocation

Which of the following halides will be most reactive towards `S_(N^(2))` reaction?

Description : Which of the following halides will be most reactive towards `S_(N^(2))` reaction?

Last Answer : Which of the following halides will be most reactive towards `S_(N^(2))` reaction? A. `C_(6)H_(5)CH_(2 ... (2)-underset(Br)underset("| ")"CH"-CH_(3)`

KI in acetone, undergoes `S_(N)2` reaction with each of `P,Q ,R` and S The rates of the reaction very as `underset(P)(H_(3)C-Cl)` .

Description : KI in acetone, undergoes `S_(N)2` reaction with each of `P,Q ,R` and S The rates of the reaction very as `underset(P)(H_(3)C-Cl)` .

Last Answer : KI in acetone, undergoes `S_(N)2` reaction with each of `P,Q ,R` and S The rates of the reaction very as ` ... R gt Q gt S D. R gt P gt S gt Q

In a `S_(N^(2))` substitution reaction of the type `R-Br+Cl^(-)overset("DMF")rarrR-Cl+Br^(-)` Which one of the following has the highest relative rate

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Last Answer : In a `S_(N^(2))` substitution reaction of the type `R-Br+Cl^(-)overset("DMF")rarrR-Cl+Br^(-)` Which one of ... CH_(2)Br` D. `(CH_(3))_(2)CH-CH_(2)Br`

The correct increasing order of the reactivity of halides for `S_(N^(1))` reaction is:

Description : The correct increasing order of the reactivity of halides for `S_(N^(1))` reaction is:

Last Answer : The correct increasing order of the reactivity of halides for `S_(N^(1))` reaction is: A. `CH_(3)CH_(2)-Xlt( ... -Xlt(CH_(3))_(2)CH-XltCH_(3)CH_(2)-X`

Which one is most reactive towards `S_(N^(1))` reaction?

Description : Which one is most reactive towards `S_(N^(1))` reaction?

Last Answer : Which one is most reactive towards `S_(N^(1))` reaction? A. `C_(6)H_(5)CH(C_(6)H_(5))Br` B. `C_(6)H_(5) ... H_(5)CH(CH_(3))Br` D. `C_(6)H_(5)CH_(2)Br`

In the `S_(N^(1))` reaction on chiral centres there is :

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

The order of reactivities of the following alkyl halides for a `S_(N^(2))` reaction is :

Description : The order of reactivities of the following alkyl halides for a `S_(N^(2))` reaction is :

Last Answer : The order of reactivities of the following alkyl halides for a `S_(N^(2))` reaction is : A. RF > RCl > RBr > ... RBr > RF > RI D. RI > RBr > RCl > RF

Arrange the following in order of decreasing tendency towards `S_(N^(2))` reaction : `{:(underset("(I)")(CH_(3)CH_(2)CH_(2)CH_(2)Cl)", "underset("(II)

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Last Answer : Arrange the following in order of decreasing tendency towards `S_(N^(2))` reaction : `{: ... `IIIgtIVgtIIgtI` C. `IgtIIIgtIIgtIV` D. `IIgtIgtIIIgtIV`

Which of the following reactions is an example of `S_(N^(2))` reaction?

Description : Which of the following reactions is an example of `S_(N^(2))` reaction?

Last Answer : Which of the following reactions is an example of `S_(N^(2))` reaction? A. `(CH_(3))_(3)C-Br+OH^(-) ... )CH_(2)OHunderset((-H_(2)O))rarrH_(2)C=CH_(2)`

Which one of the following statements wrong about `S_(N^(2))` reaction?

Description : Which one of the following statements wrong about `S_(N^(2))` reaction?

Last Answer : Which one of the following statements wrong about `S_(N^(2))` reaction? A. The rate of ... The rate of reaction `prop` [substrate] [nucleophile]

If `alpha, beta` are roots of equation `x^(2)-4x-3=0` and `s_(n)=alpha^(n)+beta^(n), n in N` then the value of `(s_(7)-4s_(6))/s_(5)` is

Description : If `alpha, beta` are roots of equation `x^(2)-4x-3=0` and `s_(n)=alpha^(n)+beta^(n), n in N` then the value of `(s_(7)-4s_(6))/s_(5)` is

Last Answer : If `alpha, beta` are roots of equation `x^(2)-4x-3=0` and `s_(n)=alpha^(n)+beta^(n), n in N` then the value ... 4s_(6))/s_(5)` is A. 4 B. 3 C. 5 D. 7

Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated required 200 mL of 0.1 N `Na_(2)S_(2)O_(3)

Description : Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated required 200 mL of 0.1 N `Na_(2)S_(2)O_(3)

Last Answer : Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated ... 56 mL B. 112 mL C. 168 mL D. 224 mL

Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated required 200 mL of 0.1 N `Na_(2)S_(2)O_(3)

Description : Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated required 200 mL of 0.1 N `Na_(2)S_(2)O_(3)

Last Answer : Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated required ... . 0.8 g C. 4.2 g D. 0.98 g

Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated required 200 mL of 0.1 N `Na_(2)S_(2)O_(3)

Description : Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated required 200 mL of 0.1 N `Na_(2)S_(2)O_(3)

Last Answer : Some amount of "20V" `H_(2)O_(2)` is mixed with excess of acidified solution of Kl. The iodine so liberated required ... 37.2 mL C. 5.6 mL D. 22.4 mL

`underset("Brown")([(NH_(3))_(5)Co-O-O-Co(NH_(3))_(5)]^(4+)) underset("oxidise")overset([S_(2)O_(8)]^(2-))tounderset("Green")([(NH_(3))_(5)Co-O-O-Co(N

Description : `underset("Brown")([(NH_(3))_(5)Co-O-O-Co(NH_(3))_(5)]^(4+)) underset("oxidise")overset([S_(2)O_(8)]^(2-))tounderset("Green")([(NH_(3))_(5)Co-O-O-Co(N

Last Answer : `underset("Brown")([(NH_(3))_(5)Co-O-O-Co(NH_(3))_(5)]^(4+)) underset("oxidise")overset([S_(2)O_(8) ... III " "IV" & "III" "III),("brown "" green"):}`

(A) In `S_(N^(2))` reactions, complete inversion of configuration takes place. (R) In `S_(N^(1))` reactions, retention but not the inversion takes pla

Description : (A) In `S_(N^(2))` reactions, complete inversion of configuration takes place. (R) In `S_(N^(1))` reactions, retention but not the inversion takes pla

Last Answer : (A) In `S_(N^(2))` reactions, complete inversion of configuration takes place. (R) In `S_(N^(1))` ... . D. IF (A) is incorrect but (R) is correct.

Which is/are correctly linked here? `{:(,"List I",,"List II"),((a),E_(1)Cb,(a),"Carbanion formation"),((b),E_(2),(b),"Stereo specific"),((c),S_(N^(1))

Description : Which is/are correctly linked here? `{:(,"List I",,"List II"),((a),E_(1)Cb,(a),"Carbanion formation"),((b),E_(2),(b),"Stereo specific"),((c),S_(N^(1))

Last Answer : Which is/are correctly linked here? `{:(,"List I",,"List II"),((a),E_(1)Cb,(a),"Carbanion formation" ... "),((d),E_(1),(d),"Carbocation formation"):}`

The most easily hydrolysed molecule under `S_(N^(1))` condition is:

Description : The most easily hydrolysed molecule under `S_(N^(1))` condition is:

Last Answer : The most easily hydrolysed molecule under `S_(N^(1))` condition is: A. allyl chloride B. benzyl chloride C. ethyl chloride D. isopropyl chloride

Which of the following is the correct order of decreasing `S_(N^(2))` reactivity ?

Description : Which of the following is the correct order of decreasing `S_(N^(2))` reactivity ?

Last Answer : Which of the following is the correct order of decreasing `S_(N^(2))` reactivity ? A. `R_(2)CHXgtR_(3) ... 3)CXgtR_(2)CHXgtRCH_(2)X("X is a halogen")`

The `S_(N^(1))` reactivity of the following halides will be in the order: (i) `(CH_(3))_(3)C-Br` (ii) `(C_(6)H_(5))CHBr` (iii) `(C_(6)H_(5))_(2)C(CH_(

Description : The `S_(N^(1))` reactivity of the following halides will be in the order: (i) `(CH_(3))_(3)C-Br` (ii) `(C_(6)H_(5))CHBr` (iii) `(C_(6)H_(5))_(2)C(CH_(

Last Answer : The `S_(N^(1))` reactivity of the following halides will be in the order: (i) `(CH_(3))_(3)C-Br` (ii) `(C_ ... D. (iii) gt (ii) gt (i) gt (iv) gt (v)

Which one of the following halogen compounds is difficult to be hydrolysed by `S_(N^(1))` mechanism?

Description : Which one of the following halogen compounds is difficult to be hydrolysed by `S_(N^(1))` mechanism?

Last Answer : Which one of the following halogen compounds is difficult to be hydrolysed by `S_(N^(1)) ... B. Isopropyl chloride C. Benzyl chloride D. Chlorobenzene

Which of the following undergoes nucleophilic substitution exclusively by `S_(N^(1))` mechanism?

Description : Which of the following undergoes nucleophilic substitution exclusively by `S_(N^(1))` mechanism?

Last Answer : Which of the following undergoes nucleophilic substitution exclusively by `S_(N^(1))` ... Isopropyl chloride C. Chlorobenzene D. Benzyl chloride

Consider the following bromides: The correct order of `S_(N^(1))` reactivity is :

Description : Consider the following bromides: The correct order of `S_(N^(1))` reactivity is :

Last Answer : Consider the following bromides: The correct order of `S_(N^(1))` reactivity is : A. `IgtIIgtIII` B. `IIgtIIIgtI` C. `IIgtIgtIII` D. `IIIgtIIgtI`

Which of the following alkyl halides is hydrolysed by `S_(N^(1))` mechanism?

Description : Which of the following alkyl halides is hydrolysed by `S_(N^(1))` mechanism?

Last Answer : Which of the following alkyl halides is hydrolysed by `S_(N^(1))` mechanism? A. `CH_(3)Cl` B. `CH_(3)CH_(2)Cl` ... (2)CH_(2)Cl` D. `(CH_(3))_(3)"CCl"`

`S_(N^(1))` mechanism for the hydrolysis of an alkyl halide involves the formation of intermediate:

Description : `S_(N^(1))` mechanism for the hydrolysis of an alkyl halide involves the formation of intermediate:

Last Answer : `S_(N^(1))` mechanism for the hydrolysis of an alkyl halide involves the formation of intermediate: ... B. carbocation C. carbanion D. none of these

`n(CF_(2)=CF_(2))overset((NH_(4))_(2)S_(2)O_(8))underset(Heat)toX` Here , X is:

Description : `n(CF_(2)=CF_(2))overset((NH_(4))_(2)S_(2)O_(8))underset(Heat)toX` Here , X is:

Last Answer : `n(CF_(2)=CF_(2))overset((NH_(4))_(2)S_(2)O_(8))underset(Heat)toX` Here , X is: A. PVC B. PMMA C. PAN D. none of these

Asseration: Number of `S-S` bonds in `H_(2)S_(n)O_(6)` is (n-1). Reason: `H_(2)S_(n)O_(6)` shows `HO_(3)S-underset((n-2))(S)-SO_(3)H`

Description : Asseration: Number of `S-S` bonds in `H_(2)S_(n)O_(6)` is (n-1). Reason: `H_(2)S_(n)O_(6)` shows `HO_(3)S-underset((n-2))(S)-SO_(3)H`

Last Answer : Asseration: Number of `S-S` bonds in `H_(2)S_(n)O_(6)` is (n-1). Reason: `H_(2)S_(n)O_(6)` shows `HO_(3)S-underset((n-2))(S)-SO_(3)H`

`S_(1):(HPO_(3))_(n)` can be prepared by heating phosphorous acid and bromine in a sealed tube. `S_(2)` : dry iodine reacts with ozone and formed yell

Description : `S_(1):(HPO_(3))_(n)` can be prepared by heating phosphorous acid and bromine in a sealed tube. `S_(2)` : dry iodine reacts with ozone and formed yell

Last Answer : `S_(1):(HPO_(3))_(n)` can be prepared by heating phosphorous acid and bromine in a sealed tube. `S_(2)` : ... below 369 K. A. FTF B. TTF C. TTT D. TFF

The number of S - S bonds in polythionic acid `(H_(2)S_(n)O_(6))`

Description : The number of S - S bonds in polythionic acid `(H_(2)S_(n)O_(6))`

Last Answer : The number of S - S bonds in polythionic acid `(H_(2)S_(n)O_(6))` A. n B. n - 1 C. n -2 D. None of these

What is Asymmetric Multiprocessing System ?

Description : What is Asymmetric Multiprocessing System ?

Last Answer : Asymmetric multiprocessing system Asymmetric multiprocessing system Asymmetric multiprocessing system has only one operating system and each processor performs a specific function. One main processor controls ... other processors wait for instructions from the master processor and act accordingly.

What is an asymmetric mixture ?

Description : What is an asymmetric mixture ?

Last Answer : A mixture which has different components in different proportions in different parts , their separate existence can be noticed and whose different parts show different religions is called asymmetric mixture. For example , a mixture of sand and sugar is a heterogeneous mixture.

Whcih of the following features are common to monosaccharides? (A) Contain asymmetric centres (B) Are of 2 types – aldoses and ketoses (C) Tend to exist as ring structures in solution (D) Include glucose, galactose and raffinose

Description : Whcih of the following features are common to monosaccharides? (A) Contain asymmetric centres (B) Are of 2 types – aldoses and ketoses (C) Tend to exist as ring structures in solution (D) Include glucose, galactose and raffinose

Last Answer : C

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.

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

How many asymmetric centers are present in a molecule of 2,4,6- trimethylheptane? (a) 0 (b) 1 (c) 2 (d) 3

Description : How many asymmetric centers are present in a molecule of 2,4,6- trimethylheptane? (a) 0 (b) 1 (c) 2 (d) 3

Last Answer : 0