The hybridisation of [FeF₆]^3- is:

1.	sp3d2	2.	d2sp3
3.	dsp3	4.	sp3

The oxidation number and coordination number of Co in the complex K₃[Co(C₂O₄)₃] respectively are:

The coordination number and oxidation number of Co in the complex (NH₄)₂[CoF₄] are:
1. +2, 4
2. 4, +2
3. 6, +3
4. +3, 6

The correct IUPAC name of the complex K[Cr(H₂O)₂(C₂O₄)₂].3H₂O is:

1. Potassiumdiaquadioxalatochromate(III)trihydrate

2. Diaquadioxalatopotassiumchromate (III) trihydrate

3. Potassiumdihydridodioxalatochromate(IV)trihydrate

4. Potassiumdiaquadioxalatochromate(II)trihydrate

Number of ions produced from the complex [Co(NH₃)₆]Cl₂ in an aqueous solution are:

1. 6      

2. 4    

3. 3        

4. 2

The compound with the highest magnetic moment value is:

1. \( {\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}} \)
2. \( {\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}} \)
3. \({\left[\mathrm{Zn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}} \)
4. \( {\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}}\)

The oxidation number of Cobalt in K[Co(CO)₄] is :

1. +1       

2. +3         

3. –1         

4. –3

The most stable complex among the following is:

1. [Fe(H₂O)₆]³⁺     

2. [Fe(NH₃)₆]³⁺       

3. [Fe(C₂O₄)₃]^3–       

4. [FeCl₆]^3–

Increasing order of intermolecular forces for Nylon - 6, 6, Buna-S, Polythene is-

1. Buna-S > Polythene > Nylon- 6,6

2. Buna-S < Polythene < Nylon- 6,6

3. Buna-S < Nylon- 6,6 < Polythene

4. Nylon-6,6 < Buna-S < Polythene

 Monomers of Dacron polymer is: 

1. Ethylene glycol and terephthalic acid

2. Ethylene oxide and  phthalic acid

3. Ethylene glycol and benzoic acid

4. Benzamide and terephthalic acid