Match List I with List II .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-c3ow{border-color:inherit;text-align:center;vertical-align:top} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List-I List-II A. Reverberatory furnace I. Pig Iron B. Electrolytic cell II. Aluminium C. Blast furnace III. Silicon D. Zone Refining furnace IV. Copper Choose the correct answer from the options given below :

Which one of the following is not an example of calcination?

Given below are two statements related to Ellingham diagram: Statement I : Ellingham diagrams can be constructed for formation of oxides, sulfides and halides of metals. Statement II : It consists of plots of $${\Delta }_{\mathrm{f}}{\mathrm{H}}^0$$ vs $$\mathrm{T}$$ for formation of oxides of elements. In the light of the above statements, choose the most appropriate answer from the options given below:

Which one of the following is most likely a mismatch ?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : In the Ellingham diagram, a sharp change in slope of the line is observed for $$\mathrm{Mg}\to \mathrm{MgO}$$ at $$\sim 1120^{\circ }\mathrm{C}$$ Reason R: There is a large change of entropy associated with the change of state In the light of the above statements, choose the correct answer from the options given below

Given below are two statements : Statement I : In the metallurgy process, sulphide ore is converted to oxide before reduction. Statement II : Oxide ores in general are easier to reduce. In the light of the above statements, choose the most appropriate answer from the options given below:

In the extraction process of copper, the product obtained after carrying out the reactions (i) $$2{\mathrm{Cu}}_2\mathrm{S}+3{\mathrm{O}}_2\to 2{\mathrm{Cu}}_2\mathrm{O}+2{\mathrm{SO}}_2$$ (ii) $$2{\mathrm{Cu}}_2\mathrm{O}+{\mathrm{Cu}}_2\mathrm{S}\to 6\mathrm{Cu}+{\mathrm{SO}}_2$$ is called

Gibbs energy vs T plot for the formation of oxides is given below. For the given diagram, the correct statement is -

Which of the following is used as a stabilizer during the concentration of sulphide ores?

In Hall - Heroult process, the following is used for reducing $${\mathrm{Al}}_2{\mathrm{O}}_3$$ :-

Which of the following metals can be extracted through alkali leaching technique?

The setting time of Cement is increased by adding :

Evaluate the following statements for their correctness. A. The elevation in boiling point temperature of water will be same for $0.1\mathrm{M}\mathrm{NaCl}$ and $0.1\mathrm{M}$ urea. B. Azeotropic mixtures boil without change in their composition. C. Osmosis always takes place from hypertonic to hypotonic solution. D. The density of $32\%{\mathrm{H}}_2{\mathrm{SO}}_4$ solution having molarity $4.09\mathrm{M}$ is approximately $1.26\mathrm{g}{\mathrm{mL}}^{-1}$ E. A negatively charged sol is obtained when KI solution is added to silver nitrate solution. Choose the correct answer from the options given below :

Match List I with List II .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-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List I List II A. van't Hoff factor, i I. Cryoscopic constant B. $${\mathrm{k}}_{\mathrm{f}}$$ II. Isotonic solutions C. Solutions with same osmotic pressure III. $$\frac{\mathrm{Normal}\mathrm{molar}\mathrm{mass}}{\mathrm{Abnormal}\mathrm{molar}\mathrm{mass}}$$ D. Azeotropes IV. Solutions with same composition of vapour above it Choose the correct answer from the options given below :

In the depression of freezing point experiment A. Vapour pressure of the solution is less than that of pure solvent B. Vapour pressure of the solution is more than that of pure solvent C. Only solute molecules solidify at the freezing point D. Only solvent molecules solidify at the freezing point Choose the most appropriate answer from the options given below :

What weight of glucose must be dissolved in $$100\mathrm{g}$$ of water to lower the vapour pressure by $$0.20\mathrm{mm}\mathrm{Hg}$$ ? (Assume dilute solution is being formed) Given : Vapour pressure of pure water is $$54.2\mathrm{mm}\mathrm{Hg}$$ at room temperature. Molar mass of glucose is $$180\mathrm{g}{\mathrm{mol}}^{-1}$$

The effect of addition of helium gas to the following reaction in equilibrium state, is : $${\mathrm{PCl}}_5(\mathrm{g})\rightleftharpoons {\mathrm{PCl}}_3(\mathrm{g})+{\mathrm{Cl}}_2(\mathrm{g})$$

For a concentrated solution of a weak electrolyte ($${\mathrm{K}}_{\text{eq }}=$$ equilibrium constant) $${\mathrm{A}}_2{\mathrm{B}}_3$$ of concentration '$$c$$', the degree of dissociation '$$\alpha$$' is :

The industrial activity held least responsible for global warming is :

How can photochemical smog be controlled?