Question 2 : Match the Column-I with Column-II. Choose the correct' one from the alternatives (a), (b) , (c) and (d). <div><br/><table class="wysiwyg-table"><tbody><tr><td>Column - I</td><td>Column-II</td></tr><tr><td>P. Wilkinson catalyst</td><td> I. trans -$IrCl(CO)(PPh_3)_2$</td></tr><tr><td>Q. Speier catalyst</td><td>II. Hydrosilylation </td></tr><tr><td>R. Water gas shift catalyst</td><td> III. $RhCl (PPh_3)_3$</td></tr><tr><td>S. Zeolite ZSM-5 catalyst </td><td> IV. Synthetic gasoline</td></tr><tr><td></td><td>V. Hydroformylation</td></tr><tr><td></td><td> VI. Zinc-copper oxide</td></tr></tbody></table></div>

Question 8 : Finally divided catalyst has a greater surface area and has greater catalytic activity than the compact solid. If a total surface area of $6291456\, cm^2$ is required for adsorption of gaseous reaction in a catalyzed reaction,then how many splits should be made in a cube of exactly 1 cm in length.[Given: One split of a cube gives eight cubes of the same size]

Question 9 : Which of the following factors are responsible for the increase in the rate of a surface catalyzed reaction?<br/>(i) A catalyst provides proper orientation for the reactant molecules to react.<br/>(ii) The heat of adsorption of reactants on a catalyst helps reactant molecules to overcome activation energy.<br/>(iii) The catalyst increases the activation energy of the reaction.

Question 10 : A catalyst in finely divided state is more efficient because in this state_______.

Question 11 : What is the name of the process for the separation of colloidal particles from those of crystalloids called?

Question 13 : Consider the following reactions at 300 K: X $\rightarrow$ Y (uncatalysed reaction) &amp; X $\rightarrow$ Y (catalysed reaction). The energy of activation is lowered by 83.14 kJmol$^{-1}$ for the catalysed reaction. <div>The rate of catalysed reaction is:<br/></div>

Question 14 : Assertion: Alcohols are dehydrated to hydrocarbons in the presence of acidic zeolites. Reason: Zeolites are microporous catalysts.

Question 17 : During electrophoresis of colloidal sol of $\displaystyle Fe(OH)_3 $, the colloidal particles _________.

Question 18 : Assertion: A catalyst is more effective in finely divided form. Reason: Finely divided form has more surface area.

Question 19 : Statement: Zeolites are water softner as well as catalyst.<div><br/>Explanation: The catalytic action of zeolites is based upon their shape selectivity.<br/></div>

Question 20 : Assertion: ZSM -5 is used as a catalyst in petrochemical industries. Reason: Zeolites are three-dimensional network silicates in which some silicon atoms are replaced by aluminium atoms.

Question 21 : Two liquids $A$ and $B$ form ideal solutions. At $300\ K$, the vapour pressure of a solution containing $1$ mole of $A$ and $3$ moles of $B$ is $550\ mm$ $Hg$. At the same temperature, if one more mole of $B$ is added to this solution, the vapour pressure of the solution increases by $10\ mm$ $Hg$. The vapour pressure of $A$ and $B$ in their pure states are respectively:

Question 22 : Choose the correct statement with respect to the vapour pressure of a liquid among the following.

Question 24 : For a given liquid at a given temperature vapour pressure is given by:<div><br/>$\;\;\;log_{10}P\:(mm)\,=\,\displaystyle-\frac{400(K)}{T}+10$</div><div><br/>Vapour pressure of the liquid at $400\:K$ is:</div>

Question 25 : The vapour pressure of two pure liquids $(A)$ and $(B)$ are $100$ and $80\ torr$ respectively. The total vapour pressure of solution obtained by mixing $2$ moles of $(A)$ and $3$ moles of $(B)$ would be :-

Question 26 : Which one of the following statements regarding Henry's law is not correct?

Question 27 : <div> Two volatile liquids $A$ and $B$ an mixed in mole ratio $1 : 3$, to form an ideal liquid solution. Vapour pressure of pure $A$ and $B$ are $600\ torr$ and $200\ torr$. Volume of container for vapour is $76$ litre. $(R = 1/12$ litre atm/K/mole).</div><div>Calculate the mole of $\wedge$ in vapour phase at $300\ K$, assuming negligible amount of vapour is present compared to liquid in container.</div>

Question 28 : $PbCl_2$ has maximum concentration of $1.0 \times 10^{-3}$ M in its saturated aq. solution at $25^0$C. Its solubility in $0.1$M NaCl solution will be :

Question 29 : The vapour pressure of pure water at $25^{\circ}C$ is $30\ mm$. The vapour pressure of $10\%\ (W/W)$ glucose solution at $25^{\circ}C$ is :<br/>

Question 31 : $P_A \, = \, X_AP_A$ and $P_B \, = \, X_BP_B$<br/>$P_T \, = \, X_AP_A \, + \, X_BP_B$<br/>Vapour pressure of mixtures of Benzene $(C_6H_6)$ and toluene $(C_7H_8)$ at $50^{\circ}C$ are given by $P_M \, = \, 179X_B \, + \, 92$ where $X_B$ is mole fraction of $C_6H_6$.<br/>What is the vapour pressure of pure liquids?<br/>

Question 32 : When a liquid that is immiscible with water was steam distilled at $95.2^o$C at a total pressure of $99.652$ kPa, the distillate contained $1.27$ g of the liquid per gram of water. What will be the molar mass of the liquid if the vapour pressure of water is $85.140$ kPa at $95.2^o$C?<br/>

Question 33 : The vapour pressure of a pure liquid $A$ is $70$ torr at $27^oC$. It forms an ideal solution with another liquid $B$. The mole fraction of $B$ is $0.2$ and total vapour pressure of the solution is $84$ torr at $27^oC$. The vapour pressure of pure liquid $B$ at $27^o$C is:

Question 34 : Liquid $M$ and liquid $N$ form an ideal solution. The vapour pressures of pure liquids $M$ and $N$ are $450$ and $700\ mm$ $Hg$, respectively, at the same temperature. Then correct statement is:<br/>(${x}_{M}=$ Mole fraction of $M$ in solution;<br/>${x}_{N}=$ Mole fraction of $N$ in solution;<br/>${y}_{M}=$ Mole fraction of $M$ in vapour phase;<br/>${y}_{N}=$ Mole fraction of $N$ in vapour phase)<br/>

Question 35 : The largest value of Henry's law constant for the liquid solvent H$_2$O will be obtained with ............. gas as the solute and a temperature of .............. $^o$C.

Question 36 : Which of the following correctly represent solubility of $N_{2}$ in water (in terms of $mmole/litre$) if $N_{2}$ is bubbled through water at $293\ K$ at a pressure of $0.768\ bar$ and Henry's constant is $76.8\ K$ at $293\ K$?

Question 37 : The vapour pressure of two pure liquids $A$ and $B$, that form an ideal solution are $100$ and $900$ torr respectively at temperature $T$. This liquid solution of $A$ and $B$ is composed of $1\ mole$ of $A$ and $1\ mole$ of $B$. What will be the pressure, when $1$ mole of mixture has been vapourized?

Question 38 : The vapour pressure of pure $A$ is 10 torr and at the same temperature when 1 g of $B$ is dissolved in 20 gm of $A$, its vapour pressure is reduced to 9.0 torn If the molecular mass of $A$ is 200 amu, then the molecular mass of $B$ is:

Question 39 : When gas is bubbled through water at $298K$, a very dilute solution of gas is obtained. Henry's law constant for the gas is $100kbar$. If gas exerts a pressure of $1$ bar, number of moles of gas dissolved in $1$ litre of water is:

Question 40 : How much oxygen is dissolved in $100mL$ water at $298K$ if partial pressure of oxygen is $0.5atm$ and ${K}_{H}=1.4\times {10}^{-3}$ $mol/L/atm$?

Question 41 : One having high vapour pressure at temperature below its melting point is?

Question 42 : To aqueous solution of Nal, increasing amounts of solid $HgI_2$ is added. The vapor pressure of the solution-

Question 43 : Vapour Pressure of a mixture of benzene and toluene is given by $P= 179X_{B} + 92$, Where $X_{B}$ is mole fraction of benzene.<br/>This condensed liquid again brought to the same temperature then what will be the mole fraction of benzene in vapour phase :<br/>

Question 44 : Which of the following changes decreases the vapour pressure of water kept in a sealed vessel?

Question 45 : Henry law constant for the solubility of methane in benzene at 298K is $4.27\times { 10 }^{ 5 }$ mm Hg then the solubility of methane in benzene at 298K under 760mm Hg is:<br/>

Question 46 : The vapour pressure of a certain liquid is given by the equation:<br/>$log_{10}P=3.54595+\dfrac {313.7}{T}+1.40655 log_{10}T$, where, P is the vapour pressure in mm and T is temperature in K. The molar latent heat of vaporisation as a function of temperature and its value in cal at 80 K is :<br/>

Question 47 : Henry's law constant for the solubility of $N_2$ gas in water at $298$ K is $1.0\times 10^5$ atm. The mole fraction of $N_2$ in air is $0.6$. The number of moles of $N_2$ from air dissolved in $10$ moles of water at $298$ K and $5$ atm pressure is:

Question 48 : $H_2S$ a toxic gas with rottenegg like smell is used for the qualetative analysis, if the solubility of $H_2S$ in water,at STP is $0.195 mole.kg^{-1}$, the Henry's law constant is:

Question 49 : A saturated solution of $NiCO_3$ was evaporated to dryness. A 250.0 mL sample was found to contain $1.1 \times 10^{-2} g$ $NiCO_3$. The molar mass of $NiCO_3$ is 118.7 g mol. The molar solubility of $NiCO_3$ is :

Question 50 : Which of the following statements is true for a solution containing components $A$ and $B$ and following Raoult's law:

Question 51 : Consider the following statements. Roasting is carried out to:<br/>(i) convert sulphide to oxide and sulphate.<br/>(ii) remove impurities of CuS and FeS present in the ore of tin stone $(SnO_2)$ as $CuSO_4$ and $FeSO_4$.<br/>(iii) melt the ore.<br/>(iv) remove arsenic and sulphur impurities.<br/>Of these statements:<br/>

Question 55 : A solution containing 1 mol $L^{-1}$ each of $Cu(NO_3)_2. AgNO_3, Hg_2(NO_3)_2$ and $Mg(NO_3)_2$, is electrolyzed using inert electrodes; with increasing potential difference applied across the electrodes, the sequence (from first to last) of deposition of metals on the cathode will be:<br/>$\left(\mathring{E}_{Ag^+/Ag} = 0.80\ V, \mathring{E}_{Hg^{+2}/Hg} = 0.79\ V, \mathring{E}_{Cu^{+2}/Cu} = 0.34\ V, \mathring{E}_{Mg^{+2}/Mg} = -2.37\ V \right)$

Question 56 : Out of $Cu_2S$, $HgS$, $Ag_2S$ and $ZnS$, roasting will convert the minerals into metals in case of ___________.

Question 57 : Assertion: In smelting, roasted ore is heated with powdered coke in presence of a flux. Reason: Oxides are reduced to metals by $C$ or $CO$. Impurities are removed as slag.

Question 59 : Sulphide ores of metals are usually concentrated by Froth Flotation process. Which one of the following sulphide ores offers and exception and is concentrated by chemical leaching?<br/>