A solution of two components containing n1 moles of the 1st component and n2 moles of the 2nd component is prepared. M1 and M2 are the molecular weights of component 1 and 2 respectively. If d is the density of the solution in g mL–1, C2 is the molarity and x2 is the mole fraction of the 2nd component, then C2 can be expressed as :

The average molar mass of chlorine is 35.5 g mol–1. The ratio of 35Cl to 37Cl in naturally occuring chlorine is close to :

Amongst the following statements, that which was not proposed by Dalton was :

The ammonia (NH3) released on quantitative reaction of 0.6 g urea (NH2CONH2) with sodium hydroxide (NaOH) can be neutralized by :

The element that can be refined by distillation is :

The incorrect statement is :

An Ellingham diagram provides information about :

Among statements (a) - (d), the correct ones are (a) Lime stone is decomposed to CaO during the extraction of iron from its oxides. (b) In the extraction of silver, silver is extracted as an anionic complex. (c) Nickel is purified by Mond’s process. (d) Zr and Ti are purified by Van Arkel method.

Cast iron is used for the manufacture of :

Among the reactions (a) - (d), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are : (a) CaO + SiO2 $$\to$$ CaSiO3 (b) 3Fe2O3 + CO $$\to$$ 2Fe3O4 + CO2 (c) FeO + SiO2 $$\to$$ FeSiO3 (d) FeO $$\to$$ Fe + {{1 \over 2}}O2

The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is :

The purest from of commercial iron is :

According to the following diagram, A reduces BO2 when the temperature is :

The size of a raw mango shrinks to a much smaller size when kept in a concentrated salt solution. Which one of the following processes can explain this?

A set of solutions is prepared using 180 g of water as a solvent and 10 g of different nonvolatile solutes A, B and C. The relative lowering of vapour pressure in the presence of these solutes are in the order : [Given, molar mass of A = 100 g mol–1; B = 200 g mol–1; C = 10,000 g mol–1]

Henry’s constant (in kbar) for four gases $$\alpha$$, $$\beta$$, $$\gamma$$ and $$\delta$$ in water at 298 K is given below : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-baqh{text-align:center;vertical-align:top} $$\alpha$$ $$\beta$$ $$\gamma$$ $$\delta$$ KH 50 2 2 $$\times$$ 10-5 0.5 (density of water = 103 kg m-3 at 298 K) This table implies that :

A graph of vapour pressure and temperature for three different liquids X, Y, and Z is shown below : The following inferences are made : (A) X has higher intermolecular interactions compared to Y. (B) X has lower intermolecular interactions compared to Y. (C) Z has lower intermolecular interactions compared to Y. The correct inference (s) is / are :

Two open beakers one containing a solvent and the other containing a mixture of that solvent with a non voltatile solute are together selated in a container. Over time :

At 35oC, the vapour pressure of CS2 is 512 mm. Hg and that of acetone is 344 mm Hg. A solution of CS2 in acetone has a total vapour pressure of 600 mm Hg. The false statement amongst the following is :

The variation of equilibrium constant with temperature is given below : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-0lax{text-align:left;vertical-align:top} Temperature Equilibrium Constant T1 = 25oC K1 = 10 T2 = 100oC K2 = 100 The values of $$\Delta$$Ho, $$\Delta$$Go at T1 and $$\Delta$$Go at T2 (in kJ mol–1) respectively, are close to : [Use R = 8.314 J K–1 mol–1]