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

In the `S_(N^(1))` reaction on chiral centres there is :
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In the `S_(N^(1))` reaction on chiral centres there is : A. `100%` racemization B. ... partial racemization C. `100%` retention D. `100%` inversion
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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)` .

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

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

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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

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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

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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)

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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)

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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)

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`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

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(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

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

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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_(

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

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

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

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The compound that does not undergo hydrolysis by `S_(N^(1))` mechanism is :

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

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

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Promoter (A) Initiates a chemical reaction and is a catalyst by itself (B) Alters the position of equilibrium in a reversible reaction (C) Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals(D) All (A), (B) and (C)

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The eq. wt. of `Na_(2)S_(2)O_(3)` as reductant in the reaction, `Na_(2)S_(2)O_(3)+H_(2)O+Cl_(2)rarrNa_(2)SO_(4)+2HCl+S` is :

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When sulphur is heated at 800 K, the initial pressure of 1 atm decreases by `20%` at equilibrium `K_(p)` of the reaction `S_(8)(g)rArr4S_(2)(g)` is :-

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

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The product of the chemical reaction between `Na_(2)S_(2)O_(3)`, `Cl_(2)` and `H_(2)O` are

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In the above reaction (in Q.99) `Na_(2)S_(2)O_(4)` acts as a

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

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The product of the chemical reaction between `Na_(2)S_(2)O_(3)`, `Cl_(2)` and `H_(2)O` are

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The unbalanced equation for the reaction of `P_(4)S_(3)` with nitrate in aqueous acidic medium is given below : `P_(4)S_(3)+NO_(3)^(-)rarrH_(3)PO_(4)+

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To measure the quantity of `MnCl_(2)` dissolved in an queous solution, it was completely converted to `KMnO_(4)` using the reaction `MnCl_(2)+K_(2)S_(

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`28 NO_(3)^(-)+3As_(2)S_(3)+4H_(2)O rarr 6AsO_(4)^(3-)+28NO+9SO_(4)^(2-)+H^(+)` What will be the equivalent mass of As_(2)S_(3)` in the above reaction

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

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How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?

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