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Introduction to E2 Mechanism

Which of the ...

Question

Which of the following pairs are correctly matched?
Reactants Products
I. $R X + A g O H (a q)$ $R H$
II. $R X + A g C N (a l c o)$ $R C N$
III. $R X + K C N (a l c o)$ $R N C$
IV. $R X + N a (e t h e r)$ $R - R$

A

I alone

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B

I and II

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C

II and III

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D

II and IV

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Solution

The correct option is D II and IV
$R X + A g O H (a q) \to R - O H + A g X$
$R X + A g C N (a q) \to A g X + R N C$

$R X + K C N (a l c o h o l i c) \to K X + R C N$

$R X + N a e t h e r - -- \to R - R$

II and IV are correct.

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Similar questions

Q. Choose the correct answer among the alternatives given :
Consider the following

S_{N} 2

R X + Y^{-} \to R - Y + X^{-}

R X + Y \to R - Y^{+} + X^{-}

R X^{+} + Y^{-} \to R Y + X

R X^{+} + Y \to R Y^{+} + X

In which reactions there is large increase and large decrease in rate of reaction respectively with increase in polarity of the solvent.

Q. According to Euclid's division Lemma for the two polynomials

s (x)

r (x)

, we can write as

s (x) = p (x) \times q (x) + r (x)

. which of the following about

r (x)

Say true or false:

For polynomials

p (x)

and any non-zero polynomial

g (x)

, there are polynomials

q (x)

r (x)

p (x) = g (x) q (x) + r (x)

r (x) = 0

r (x) <

g (x) .

This statement is correctly explains the remainder theorem.

Q. Give examples of polynomials

p (x), g (x), q (x)

r (x)

, which satisfy the division algorithm and
(i) deg

p (x) =

q (x)

q (x) =

r (x)

r (x) = 0

p (x), g (x), q (x)

r (x)

, which satisfy the division algorithm and deg

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