GATE CY kind:question PYQs & Answers — Page 62

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Questions 611–620 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 62 of 65

The mobility of a univalent ion in aqueous solution is

at 300 K. Its diffusion coefficient at 300 K is

. The value of X is __________ (up to two decimal places)

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For the following consecutive first order reactions

the time (in seconds) required for Y to reach its maximum concentration (assuming only X is present at time

) is __________ (up to two decimal places)

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Under physiological conditions, the conversion of CO

to bicarbonate ion by carbonic anhydrase enzyme (MW = 30,000 g mol

) has a turnover number of

. The minimum amount of enzyme (in μg) required to convert 0.44 g of CO

to bicarbonate ions in 100 seconds is __________ (up to two decimal places)

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Assume 1,3,5-hexatriene to be a linear molecule and model the π electrons as particles in a one-dimensional box of length 0.70 nm. The wavelength (in nm) corresponding to the transition from the ground-state to the first excited-state is __________

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The standard Gibbs free energy change of the reaction shown below is −2.7 kJ mol

Sn(s) + Pb

= Sn

+ Pb(s)

Given that

is −0.126 V, the value of

in V is __________ (up to two decimal places)

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The dissociative chemisorption of X

(g) on a metal surface follows Langmuir adsorption isotherm. The ratio of the rate constants of the adsorption and desorption processes is 4.0 atm

. The fractional surface coverage of X(adsorbed) at 1.0 atm pressure is __________ (up to two decimal places)

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The ionic activity coefficients of Ca

and F

are 0.72 and 0.28, respectively. The mean activity coefficient of CaF

is __________ (up to two decimal places)

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The angle of orientation (in degrees) of the angular momentum vector with respect to z-axis for

and

state of H-atom is __________ (up to two decimal places)

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The Gibbs free energy of mixing is denoted as

. 1.0 mole of He, 3.0 moles of Ne and 2.0 moles of Ar are mixed at the same pressure and temperature. Assuming ideal gas behavior, the value of

is ______ (up to two decimal places)

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represents a normalized molecular orbital constructed from two different atomic orbitals

and

that form an orthonormal set. The value of

is ______ (up to two decimal places)

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