PUC Science 2nd PUC Class 12 - Karnataka Board PUC Important Questions for Chemistry

For the complex [Fe(CN)₆]^3–, write the hybridization type, magnetic character and spin nature of the complex. (At. number : Fe = 26).

Draw one of the geometrical isomers of the complex [Pt(en)₂Cl₂]²⁺ which is optically active.

Write the IUPAC name of the given compound :

Out of BaCl₂ and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason.

Write down the IUPAC name of the following complex: [Cr(NH₃)₂Cl₂(en)]Cl (en = ethylenediamine)

Write the formula for the following complex:

Pentaamminenitrito-O-Cobalt(III)

Draw the geometrical isomers of complex [Pt(NH₃)₂Cl₂].

Write the hybridization and magnetic behaviour of the complex [Ni(CO)₄].

(At.no. of Ni = 28)

Give reasons for the following observations: Leather gets hardened after tanning.

Give reasons for the following observations: Lyophilic sol is more stable than lyophobic sol. 

Give reasons for the following observations: Lyophilic sol is more stable than lyophobic sol. 

It is necessary to remove CO when ammonia is prepared by Haber's process.

What are emulsions?

What are the different types of emulsions? Give one example of each type.

Write the IUPAC name of the complex [Cr(NH₃)₄ Cl₂]Cl.

What type of isomerism is exhibited by the complex [Co(en)₃]³⁺?

(en = ethane-1,2-diamine)

Define the following term:

Anomers 

Write the IUPAC name of the following coordination compound:

K₃[Fe(CN)₆]

Name the method used for the refining of Nickel metal.

Which would undergo S_N1 reaction faster in the following pair and why?