Which of the following statements is/are...

Which of the following statements is/are true?

In metal carbonyl complexes d increases compared to that in CO molecule

The pair of compounds `[Cr(H_(2)O)_(6)]Cl_(3)" and "[CrCl_(3)(H_(2)O)_(3)].3H_(2)O` shows hydration isomerism

`d_(z^(2))` orbital of central metal atom/ion is used in `dsp^(2)` hybridisation

Facial and meridional isomers associated with `[Ma_(3)b_(3)]^(npm)` type complex compound, both are optically inactive

Text Solution

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The correct Answer is:

a,d

Water of hydration exists in ionic compounds. `.^(d)x^(2)-y^(2)` orbitals is used in `dsp^(2)` hybridization.

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Which of the following statement is/are true ?

`Cu^(2+)` salts form soluble complex with excess KCN

`Cu^(2+)` salts form soluble complex with aqueous ammonia

`Cu^(2+)` salts form soluble complex with KI

A piece of iron or zinc when place in `Cu^(2+)` salt solution, precipitates copper

Which of the following statement is // are true

work done by kinetic friction on a rigid body may be positive

a uniform sphere rolls up an inclined plane without sliding. The friction force on it will be up the incline. (only contact force and gravitational force is acting)

a uniform sphere rolls down an inclined plane without sliding. The fricition force on it will be up the incline. (only contact force and gravitational force is acting)

a uniform sphere is left from rest from the top of rough inclined plane. It moves down the plane with slipping. The friction force on it will be up the incline.

Which of the following statement is // are true ?

Basac on VSEPR theory, the number of 90 degree `F-Br` angles in `BrF_(5)` is four.

Molecular geometries of both `(CH_(3))_(3)N` and `(SiH_(3))_(3)` are trigonal planar.

The `C-C` bond length in `C_(2)` is bigger than `O-O` bond length `O_(2)`.

For ozone molecule, one oxygen `-` oxygen bond is stronger than the other oxygen `-` oxygen bond.