Assertion :Bis(dimethylglyoximato)nickel(II) can show geometrical isomerism. Reason: Tetrahedral complexes with chiral structures exhibit optical isomerism.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
Dimethylglyoximato is a symmetrical ligand. Hence the complex containing two DMG ligands can not show geometrical isomerism. The tetrahedral complex containing chiral center contains no element of symmetry and shows optical isomerism.

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Q. Assertion: The compressibility factor for

H_{2}

and

H e

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

Reason: The compressibility factor for

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H e

can be derived from Van der Waal's equation.

In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct answer out of the following choices.
(a) Assertion and reason both are true, reason is correct explanation of assertion.
(b) Assertion and reason both are true but reason is not the correct explanation of assertion.
(c) Assertion is true, reason is false.
(d) Assertion is false, reason is true.

Assertion (A) Complexes of $M X_{6}$ and $M X_{5} L$ type (X and L are unidentate) do not show geometrical isomerism.
Reason (R) Geometrical isomerism is not shown by complexes of coordination number 6.