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Standard XII

Chemistry

Oxyacids Of Sulphur

Assertion :Th...

Question

Assertion :The relation $R$ given by
$R = {(1, 3), (4, 2), (2, 4), (2, 3), (3, 1)}$ on a set $A = {1, 2, 3, 4}$ is not symmetric. Reason: For symmetric relation $R = R^{- 1}$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$R = {(1, 3), (4, 2), (2, 4) (2, 3) (3, 1)}$ as $(2, 3) \in R$ but $(3, 2) \notin R$
$\Rightarrow$ is not symmetric.

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Similar questions

This question consists of two statements,namely,Assertion (A) and Reason (R).For selecting the correct answer,use the following code:

(a) Both Assertion (A) and Reason (R) are true and Reason (R) correct explanation of Assertion (A).

(b) Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).

The correct answer is :(a) /(b) /(c) /(d)

(a) Both Assertion (A) and Reason (R) are true and Reason (A) and Reason (R). For selecting the correct answer, use the following code :

(b) Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).

(d) Assertion (A) is false and Reason (R) is true.

$\begin{matrix} Assertion (A) & Reason (R) \sqrt{3} i s a n i r r a t i o n a l n u m b e r . & T h e s u m o f a r a t i o n a l n u m b e r a n d a n i r r a t i o n a l n u m b e r i s a n i r r a t i o n a l n u m b e r . \end{matrix} The correct answer is: (a)/(b)/(c)/(d).$

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

This question consists of two statements, namely, Assertion (A) and Reason (R). For selecting the correct answer, use the following code:

(a) Both Assertion (A) and Reason (R) are true and Reason (R) correct explanation of Assertion (A).

(b) Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct explanation of Assertion (A).

(d) Assertion (A) is false and Reason (R) is true.

Assertion (A) Bond angle in ethers is slightly less than the tetrahedral angle.
Reason (R) There is a repulsion between the two bulky (- R) groups.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Assertion :The relation R given by R={(1,3),(4,2),(2,4),(2,3),(3,1)} on a set A={1,2,3,4} is not symmetric. Reason: For symmetric relation R=R−1.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionR={(1,3),(4,2),(2,4)(2,3)(3,1)} as (2,3)∈R but (3,2)∉R⇒ is not symmetric.

Assertion :The relation $R$ given by
$R = {(1, 3), (4, 2), (2, 4), (2, 3), (3, 1)}$ on a set $A = {1, 2, 3, 4}$ is not symmetric. Reason: For symmetric relation $R = R^{- 1}$ .

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$R = {(1, 3), (4, 2), (2, 4) (2, 3) (3, 1)}$ as $(2, 3) \in R$ but $(3, 2) \notin R$
$\Rightarrow$ is not symmetric.