Science (English Medium) Class 12 - CBSE Important Questions for Chemistry

Write the dispersed phase and dispersion medium of butter.

Write the hybridization and shape of the following complexe : [CoF₆]^3–

(Atomic number : Co = 27, Ni = 28)

Write the hybridization and shape of the following complexe : [Ni(CN)₄]^2–

^{(Atomic number : Co = 27, Ni = 28)}

Define the following term : Brownian movement

Define the following term:

Multimolecular colloids

Define the following term:

Multimolecular colloids

What are the dispersed phase and dispersion medium in milk?

Write one difference in Lyophobic sol and Lyophilic sol

Write one difference in Lyophobic sol and Lyophilic sol

Answer the following question.
Why are medicines more effective in the colloidal state?

Answer the following question.
What is the difference between an emulsion and a gel?

Using crystal field theory, write the electronic configuration of d⁵ ion, if Δ₀ > P.

What is the spectrochemical series?

What is the difference between a weak field ligand and a strong field ligand?

State the Hardy-Schulze rule.

What is crystal field splitting energy?

Using valence bond theory, predict the hybridization and magnetic character of the following:

[CoF₆]^3– [Atomic number of Co = 27]

How many ions are produced from the complex Co(NH₃)₆]Cl₂ in solution?

Define the following term:

Coagulation

On the basis of crystal field theory, write the electronic configuration for the d⁵ ion with a weak ligand for which Δ₀ < P.