Explore topic-wise MCQs in Organic Chemistry.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

WHICH_OF_THE_FOLLOWING_IS_THE_INCORRECT_STATEMENT_ABOUT_ZEISE‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•S_SALT??$#

A. Zeise’s salt is diamagnetic
B. Oxidation state of Pt in Zeis’s salt is +2
C. All the Pt-Cl bond length in Zeise’s salt are equal
D. C-C bond length of ethylene moiety in Zeise’s salt longer than that of free ethylene molecule
Answer» D. C-C bond length of ethylene moiety in Zeise‚Äö√Ñ√∂‚àö√ë‚àö¬•s salt longer than that of free ethylene molecule
Discussion
2.

For_metal_olefin_complexes_(i)_[PtCl3(C2F4)]–_and_(ii)_[PtCl3(C2H4)]–,_which_of_the_following_is_the_correct_statement?$#

A. carbon-carbon bond length is same both in (i) and (ii)
B. carbon-carbon bond length in (i) is smaller
C. carbon-carbon bond length in (ii) is smaller
D. a metallacycle is formed in each complex
Answer» C. carbon-carbon bond length in (ii) is smaller
Discussion
3.

How many M — M bonds are present in [Cp Mo(CO3)]2?#

A. 1
B. 2
C. 0
D. 4
Answer» D. 4
Discussion
4.

Which of the following complexes show easy oxidation?

A. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Fe
B. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Ru
C. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Co
D. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Co<sup>+</sup>
Answer» D. (‚âà√≠‚Äö√†√´<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Co<sup>+</sup>
Discussion
5.

If complex [W(Cp)2(CO)2] follows 18e- rule. What is Hapticity of Cp?

A. 5 and 5
B. 3 and 5
C. 3 and 3
D. 1 and 5
Answer» C. 3 and 3
Discussion
6.

Which of the following is the neutral complex which follows the 18- electron rule?

A. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)Fe(CO)<sub>2</sub>
B. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)2Mo(CO)<sub>3</sub>
C. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Co
D. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)2Re(η<sup>6</sup>-C<sub>6</sub>H<sub>6</sub>)
Answer» E.
Discussion
7.

What is the oxidation state of molybdenum in [η7-tropylium) Mo(CO)3]+?$

A. +2
B. +1
C. 0
D. -1
Answer» D. -1
Discussion
8.

Which of the following complex is in which organic ligand is having only bond with metal?

A. W(CH<sub>3</sub>)<sub>6</sub>
B. K[PtCl<sub>3</sub>(C<sub>2</sub>H<sub>4</sub>)]
C. (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>Fe
D. (η<sup>5</sup>-C<sub>6</sub>H<sub>6</sub>)<sub>2</sub>Ru
Answer» B. K[PtCl<sub>3</sub>(C<sub>2</sub>H<sub>4</sub>)]
Discussion
9.

Which of the following complex has a highest oxidation state of metal?

A. (η<sup>6</sup>-C<sub>6</sub>H<sub>6</sub>)<sub>2</sub>Cr
B. Mn(CO)<sub>5</sub>Cl
C. Na<sub>2</sub>[Fe(CO)<sub>4</sub>]
D. K[Mn(CO)<sub>5</sub>]
Answer» D. K[Mn(CO)<sub>5</sub>]
Discussion