The antiseptic solution of iodopovidone for the use of external application contains 10 % w/v of iodopovidone. Calculate the amount of iodopovidone present in a typical dose of 1.5 mL.

A litre of sea water weighing about 1.05 kg contains 5 mg of dissolved oxygen (O₂). Express the concentration of dissolved oxygen in ppm.

Explain why the aquatic species are more comfortable in cold water during winter season rather than warm water during the summer.

At 400 K 1.5 g of an unknown substance is dissolved in solvent and the solution is made to 1.5 L. Its osmotic pressure is found to be 0.3 bar. Calculate the molar mass of the unknown substance.

Define molality

What is a vapour pressure of liquid ?
What is relative lowering of vapour pressure ?

State and explain Henry’s law.

State Raoult law and obtain expression for lowering of vapour pressure when nonvolatile solute is dissolved in solvent.

What is molal depression constant ? Does it depend on nature of the solute ?

What is osmosis ?

Define the term ‘isotonic solution’.

You are provided with a solid ‘A’ and three solutions of A dissolved in water - one saturated, one unsaturated, and one super saturated. How would you determine which solution is which ?

Explain the effect of pressure on the solubility.

A 0.25 M glucose solution at 370.28 K has approximately the pressure as blood does what is the osmotic pressure of blood ?

Calculate the molality of a solution containing 7.5 g of glycine (NH₂ - CH₂ - COOH) dissolved in 500 g of water.

Define the following
Bond order

What is a pi bond ?

Explain Sp² hybridisation in BF₃.

Draw MO diagram of CO and calculate its bond order.

What do you understand by Linear combination of atomic orbitals in MO theory.

Linear form of carbondioxide molecule has two polar bonds. yet the molecule has Zero dipolement why ?

Draw the Lewis structures for the following species.
i) NO₃^–
ii) SO₄^2–
iii) HNO₃
iv) O₃

Explain the bond formation in BeCl₂ and MgCl₂.

Hydrogen gas is diatomic where as inert gases are monoatomic – explain on the basis of MO theory.

What is Polar Covalent bond ? explain with example.

Considering x- axis as molecular axis, which out of the following will form a sigma bond.
i) 1s and 2p_y
ii) 2P_x and 2P_x
iii) 2p_x and 2p_z
iv) 1s and 2p_z

Explain resonance with reference to carbonate ion ?

What type of hybridisations are possible in the following geometeries ?
a) octahedral
b) tetrahedral
c) square planer

Which one of the following has highest bond order ?
N₂, N₂⁺, or N₂^-

Explain the covalent character in ionic bond.