a) i)State ideal gas equation. ii) At 25ºC and 760mm oh Hg pressure a gas occupies 600 ml volume.What will be its pressure at a height where temperature is 10ºC and volume of gas is 640ml.

b) Describe the electronic configuration and show the filling of orbitals of the following elements: Cr , Ni, Cu, Si, Se.

c) i)Calcium carbonate reacts with aqueous HCl to give CaCl² and CO² according to the reaction, CaCO³(S)+2 HCl (aq) ---- à CaCl²b (aq) + CO² (g) + H²O(l) . What mass of CaCO³ is required to react completely wit 25ml of 0.75M HCl? ii)What will be the pressure of the gaseous mixture when 0.5 l of H² at 0.8 bar and 2 l of dioxygen at 0.7 bar are introduced in a 1l vessel at 27ºC?

d) i)Write the Lewis structure of C²H⁴ , N² , HNOᵌ , (CO³ )²ˉ , CH³COOH. ii)Define resonance with the help of example.

e) i)State: Heisenberg Uncertainity Principle Paulis’s Exclusion Principle Hund’s rule of maximum Multiplicity ii) A golf ball has a mass og 40 g, and a speed of 45m/sec. If the speed can be measured within accuracy of 2 %, Calculate the uncertainity in the position.