Standard Gibb's free energy change for isomerization reaction cis-2-pentene \[\rightleftharpoons \] trans-2-pentene is \[-3.67\text{ }kJ/mol\] at 400 K. If more trans-2-pentene is added to the reaction vessel, then

additional trans-2-pentene is formed

equilibrium is shifted in forward direction

Assuming that water vapour is an ideal gas, the internal energy change \[\left( \Delta U \right)\] when 1 mol of water is vapourised at 1 bar pressure and \[100{}^\circ C,\] (given : molar enthalpy of vapourisation of water at 1 bar and \[373\text{ }K=41\text{ }kJ\text{ }mo{{l}^{-1}}\] and \[R=8.3\,J\,mo{{l}^{-1}}{{K}^{-1}}\]) will be

\[3.7904\text{ }kJ\text{ }mo{{l}^{-1}}\]

\[37.904\text{ }kJ\text{ }mo{{l}^{-1}}\]

changes abruptly from solid to liquid when heated.

undergoes deformation of its geometry easily.

has an irregular 3-dimensional arrangements.

For fcc, if AB is just like the rock salt like structure then, \[{{A}^{+}}\] and \[{{B}^{-}}\] are located at -

\[{{A}^{+}}\] - Corner and faces; \[{{B}^{-}}\] - Octahedral and tetrahedral voids

\[{{A}^{+}}\]- Tetrahedral voids ; \[{{B}^{-}}\]- Corner

\[{{A}^{+}}\] - Corner and faces; \[{{B}^{-}}\] - Octahedral voids

\[{{A}^{+}}\] - Octahedral voids; \[{{B}^{-}}\]- Corner and faces

\[{{A}^{+}}\] - Corner and faces; \[{{B}^{-}}\] - Octahedral and tetrahedral voids

The second order Bragg diffraction of X-rays with\[=1.00\overset{\text{o}}{\mathop{\text{A}}}\,\] from a set of parallel planes in a metal occurs at an angle\[60{}^\circ \]. The distance between the scattering planes in the crystal is

\[0.575\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

\[1.00\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

\[2.00\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

\[1.15\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

How many unit cells are present in a cube-shaped ideal crystal of \[NaCl\] of mass\[1.00g\]? [Atomic masses:\[Na=23,\text{ }Cl=35.5\]]

\[5.14\times {{10}^{21}}\]unit cells

\[1.28\times {{10}^{21}}\]unit cells

\[1.71\times {{10}^{21}}\]unit cells

\[2.57\times {{10}^{21}}\]unit cells

Which is incorrect among the following options?

Boiling point of \[Sb{{H}_{3}}>As{{H}_{3}}>N{{H}_{3}}>P{{H}_{3}}\]

Basicity \[N{{H}_{3}}>P{{H}_{3}}>As{{H}_{3}}>Sb{{H}_{3}}\]

Oxidation state of nitrogen \[{{N}_{2}}O

Reducing property of \[{{H}_{3}}P{{O}_{4}}>{{H}_{3}}P{{O}_{3}}>{{H}_{3}}P{{O}_{2}}\]

Boiling point of \[Sb{{H}_{3}}>As{{H}_{3}}>N{{H}_{3}}>P{{H}_{3}}\]

A blue colouration is not obtained when

ferric chloride reacts with sod. ferrocyanide.

ammonium hydroxide dissolves in copper sulphate.

copper sulphate solution reacts with \[{{K}_{4}}\left[ Fe{{\left( CN \right)}_{6}} \right].\]

ferric chloride reacts with sod. ferrocyanide.

anhydrous \[CuS{{O}_{4}}\] is dissolved in water.

have greater concentration at the surface layer than the bulk of the solution

raise both the surface tension and viscosity of water

lower both the surface tension and viscosity of water

lower the surface tension and raise the viscosity of water

have greater concentration at the surface layer than the bulk of the solution

Adsorption is accompanied by the evolution of heat. So according to Le-Chatelier principle the amount of substance adsorbed should

increase with increase in temperature

increase with decrease in temperature

increase with increase in temperature

decrease with decrease in temperature

decrease with increase in temperature

Select incorrect statement:

Soap and detergent lower the interfacial surface tension between oil and water

Basic principle of peptization is reverse of coagulation

Soap and detergent used as emulsifiers

Lyophilic sols need stabilizing agent

Which gas will be adsorbed on a solid to greater extent?

Having lowest critical temperature

Having highest critical temperature

Having lowest critical temperature

Having lowest critical pressure

Identify the correct statement regarding enzymes____.

Enzymes are specific biological catalysts that cannot be poisoned

Enzymes are normally heterogeneous catalysts that are very specific in their action

Enzymes are specific biological catalysts that can normally function at very high temperatures \[(T\approx 1000K)\]

Enzymes are specific biological catalysts that possess well-defined active sites

Which of the following constitutes irreversible colloidal system in water as dispersion medium?

\[Fe{{\left( OH \right)}_{3}}\]

The following statements relate to the adsorption of gases on a solid surface. Identify the incorrect statement among them:

Entropy of adsorption in negative

Enthalpy of adsorption is negative

On adsorption, the residual forces on the surface are increased

Entropy of adsorption in negative

A chemical reaction is catalyzed by a catalyst X. Hence X

reduces enthalpy of the reaction

decreases rate constant of the reaction

increases activation energy of the reaction

does not affect equilibrium constant of the reaction