1.
What is homogenous catalysis?
Calculate the energy of spectrum having wavelength of 675 nm 675 \mathrm{~nm} 675 nm.
How does the size of the elements given in the stem change? Explain.
According to the stem, there is deviation in the order of ionisation potential - analyse.
2.
What is Pauli's exclusion principle?
Why is water bath used in the laboratory?
How would you calculate the pH \mathrm{pH} pH of the stem's solution?
Will there be a change in pH \mathrm{pH} pH of the given solution, if a small amount of acid or base is added to it? Write giving reasons.
3.
What is heat of solution?
The bond angle of NH3 \mathrm{NH}_{3} NH3 molecule is 107∘ 107^{\circ} 107∘. Why?
Calculate the solubility of the precipitate shown in the stem.
The two ions given in the stem do not precipitate simultaneously - Analyse with justification.
4.
What is electronegativity?
Explain the buffer action of blood.
Discuss the model of the atomic structure with reference to the figure given in the stem.
Consider the model as hydrogen atom. Calculate the absorbed energy and its frequency for the elecronic transition shown in the stem.
5.
Write down the law of mass action.
How are polar compounds formed?
How can the reagent of fig I be stored free from contamination? Describe.
Special measures have to be taken for the after-use saff disoposal of the chemicals symbolised by fig. II and III Explain giving logical reasons.
