GATE CY topic:chemistry PYQs & Answers — Page 45

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topic:chemistry

Questions 441–450 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 45 of 65

The hydrogen-like radial wave function of the

orbital is given as

where

;

atomic number;

distance from the nucleus and

Bohr radius.

Positions of the radial nodes (in units of

) of the

orbital are at

Your answerChoose one option.

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and

for Fe(g) are 370.7 kJ mol

and 416.3 kJ mol

at 298 K, respectively. Assuming

is constant in the interval 250 K to 375 K,

(rounded off to the nearest integer) for Fe(g) at 375 K is:

Your answerChoose one option.

359 kJ mol

338 kJ mol

325 kJ mol

310 kJ mol

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Adsorption of N

on TiO

was carried out at 75 K. A plot of

versus

(

) gives a straight line with an intercept,

and slope,

. The volume (rounded off to the nearest integer) corresponding to the monolayer coverage is:

Your answerChoose one option.

996 mm

785 mm

690 mm

555 mm

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Among the following sets,

the total number of set(s) of diastereomeric pair(s) is ______

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Among the following,

the total number of compounds showing characteristic carbonyl stretching frequency less than 1700 cm

in their IR spectra is ______

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Consider that AgX crystallizes in rock salt structure. The density of AgX is 6477 kg/m

and unit cell length is 577.5 pm. Atomic weight of Ag is 107.87 g mol

. The atomic weight of X (in g mol

, rounded off to two decimal places) is ______

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The total number of

lines expected in the EPR spectrum of a solution of bis(salicylaldimine) copper(II) having pure

Cu and

N at 77 K is ______

(Given: I values of

Cu,

N and

H are

, 1 and

, respectively)

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Among the following,

the total number of species having nido structure is ______

(Given: atomic numbers of H, B, C, O, Ni, Rh and Os are 1, 5, 6, 8, 28, 45 and 76, respectively)

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The frequency (in cm

, rounded off to two decimal places) for pure rotational line in the spectrum of NO molecule due to change in the quantum number from

is ______

(Given: Moment of inertia of NO =

kg m

;

J s;

m/s)

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The % error (rounded off to two decimal places) in the ground state energy of a particle in a one dimensional box of length ‘a’ described by a trial variation function

, where

, is ______

(Given: The true ground state energy of the above system is

;

)

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GATE CY topic:chemistry PYQs

Question 41

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Question 50