PUC Science 2nd PUC Class 12 - Karnataka Board PUC Question Bank Solutions

Why is zinc not extracted from zinc oxide through reduction using CO?

The value of Δ_tG^θ for formation of Cr₂O₃ is −540 kJ mol⁻¹ and that of Al₂O₃ is −827 kJ mol⁻¹. Is the reduction of Cr₂O₃ possible with Al?

Predict conditions under which Al might be expected to reduce MgO.

Indicate the types of isomerism exhibited by the following complex and draw the structures for these isomers:

K[Cr(H₂O)₂(C₂O₄)₂]

Indicate the types of isomerism exhibited by the following complex and draw the structures for these isomers:

[Co(en)₃]Cl₃

Indicate the types of isomerism exhibited by the following complex and draw the structures for these isomers:

[Co(NH₃)₅(NO₂)](NO₃)₂

Indicate the types of isomerism exhibited by the following complex and draw the structure for this isomer:

[Pt(NH₃)(H₂O)Cl₂]

How many geometrical isomers are possible in the following coordination entity? 

[Cr(C₂O₄)₃]³⁻

How many geometrical isomers are possible in the following coordination entity? 

[Co(NH₃)₃Cl₃]

Draw the structure of optical isomers of [Cr(C₂O₄)₃]³⁻.

Draw the structure of optical isomers of [PtCl₂(en)₂]²⁺.

Draw the structure of optical isomers of [Cr(NH₃)₂Cl₂(en)]⁺.

Draw all the isomers (geometrical and optical) of [CoCl₂(en)₂]⁺.

Draw all the isomers (geometrical and optical) of [Co(NH₃)Cl(en)₂]²⁺.

Draw all the isomers (geometrical and optical) of [Co(NH₃)₂Cl₂(en)]⁺.

Write all the geometrical isomers of [Pt(NH₃)(Br)(Cl)(py)] and how many of these will exhibit optical isomers?

Write the names of monomers of the following polymers.

Write the names of monomers of the following polymers:

Write the names of monomer of the following polymer:

How can you differentiate between addition and condensation polymerisation?