1.
What is food preservative?
Why CO2 \mathrm{CO}_{2} CO2 is linear?
Write the principle of preparation of food preservative of pot-A from sugarcane juice with equation.
Analyze that as food preservative, mechanism of solution pot- A \mathrm{A} A and B \mathrm{B} B of the stem is different.
2.
What is called orbital?
Why the spin of two electrons in a same orbital could not be same according to Pauli's exclusion principle?
Calculate the wavelength of the stem radiation.
Analyze that stem model is more effective than Rutherford's atomic model to explain the stability of the atom.
3.
What is called hybridization of orbitals?
How fake note is identified with the help of UV-ray?
Which 1st ionization energy is more between Y \mathrm{Y} Y and Z \mathrm{Z} Z of the stem? Explain.
Analyze the causes of different shapes of hydride molecules of Y Y Y and Z Z Z elements of the stem.
4.
What is called ionic product of water?
Explain that chemical equilibrium is dynamic.
Calculate the pH \mathrm{pH} pH of pot-A solution in the stem.
Is there any buffer action of the mixed solution of pot-A and B B B of the stem? Analyze.
5. Ksp of AgCl=1.8×10−10 \mathrm{K}_{\text {sp }} \text { of } \mathrm{AgCl}=1.8 \times 10^{-10} Ksp of AgCl=1.8×10−10
What is the weavelength range of IR-ray?
Why the melting point of FeCl2 \mathrm{FeCl}_{2} FeCl2 is more than FeCl3 \mathrm{FeCl}_{3} FeCl3 ?
Explain the identification test of anion of pot-'A' solution of the stem.
If pot-'A' and 'B' solution are mixed together whether precipitation will form or not, justify with the principle of solubility.
