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

Explain the following with suitable examples:

12-16 group compounds

What modification can you suggest in the Hardy-Schulze law?

Explain what is observed when a beam of light is passed through a colloidal sol.

Explain what is observed when an electrolyte NaCl is added to hydrated ferric oxide sol.

Explain what is observed when an electric current is passed through a colloidal sol?

Explain the term Electrophoresis

Explain the terms Coagulation

Explain the terms Dialysis 

Explain the term Tyndall effect.

What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt?

What type of semiconductor is obtained when silicon is doped with boron? 

Give reasons for the following observations: Addition of alum purifies the water

Write the conditions to maximize the yield of H₂SO₄ by contact process.

What are emulsions?

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

Complete the following equations: CaF₂+H₂SO₄ →

What are the dispersed phase and dispersion medium in milk?

Complete the following equations: C + conc. H₂SO₄ →

Draw the structure of the following:

H₂SO₄

How do emulsifires stabilise emulsion? Name two emulsifiers.