RE-NEET 2026 | Coordination Compounds Question 1 | Chemistry

RE-NEET 2026

MCQ (Single Correct Answer)

-1

The formula of tetraammineaquachloridocobalt(III) chloride is

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{H}_2 \mathrm{O}\right) \mathrm{Cl}\right] \mathrm{Cl}_2$

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \times \mathrm{H}_2 \mathrm{O}$

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\right] \mathrm{Cl}_3 \times \mathrm{H}_2 \mathrm{O}$

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{H}_2 \mathrm{O}\right) \mathrm{Cl}\right] \mathrm{Cl}$

RE-NEET 2026

MCQ (Single Correct Answer)

-1

Given below are two statements:

Statement-I : $\left[\mathrm{Fe}(\mathrm{ox})_3\right]^{3-}$ is chiral.

Statement-II : trans $-\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_2(\mathrm{ox})_2\right]^{-}$is chiral.

(Given : $\mathrm{oxH}_2=\mathrm{HOOC}-\mathrm{COOH}$ )

In light of the above statements, choose the most appropriate answer from the options given below:

Statement-I is incorrect but Statement-II is correct

Both Statement-I and Statement-II are correct

Both Statement-I and Statement-II are incorrect

Statement-I is correct but Statement-II is incorrect

RE-NEET 2026

MCQ (Single Correct Answer)

-1

The complex which has facial and meridional isomers is

(Given : py = pyridine and en = $\mathrm{H}_2 \mathrm{~N}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{NH}_2$ )

$\left[\mathrm{Ni}(\mathrm{en})_2\left(\mathrm{H}_2 \mathrm{O}\right)_2\right]^{2+}$

$\left[\mathrm{Cr}(\mathrm{py})_3(\mathrm{Cl})_3\right]$

$\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4\left(\mathrm{H}_2 \mathrm{O}\right)_2\right]^{3+}$

RE-NEET 2026

MCQ (Single Correct Answer)

-1

A $1: 3$ electrolyte in an aqueous solution is

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3\left(\mathrm{NO}_2\right)_3\right]$

$\left[\mathrm{CoCl}_2\left(\mathrm{NH}_3\right)_4\right] \mathrm{Cl}$

$\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right] \mathrm{Cl}_2$

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_3$

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