92.

93.

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95.

96.

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99.

100.

028/22

A zinc rod is dipped 17 ௨ 0.1 M solution of ZnSO, at 25°C and if the salt undergoes
100% dissociation, calculate the approximate potential of electrode if the standard
potential E°(Zn?*/Zn) is -0.76V.

A) +0.76 B) -0.76 C) -0.79 D) +0.79

Calculate the potential of the cell Zn, 202+ (1M)|Fe@* (1M); Pt, if the respective
standard reduction potential of half-cell are respectively -0.76V and +0.77V.

A) +0.76V B) -0.77V ©) +1.53V D) +0.01V
The standard electrode potential of quinhydrone electrode can be written as
A) ಕೃ = -0.6996 + 0.0591pH 8) ६७०८0 = +0.6996 - 0.0591pH
©) 8५७० = -0.6996 - 0.0591 pH 0) ६०००0 = +0.6996 + 0.0591pH

If the rotational constant 8 of 120160 is 3.8 01771, the position of first rotational line
in its spectrum in cm? is

A) 1.9 B) 3.8 C) 7.6 D) 15.2

Zero point energy of a simple harmonic oscillator in terms of oscillation frequency
−−↿⋅
∨∨∁↾⋅⋂∣≘

^) 7> B) W ©) 3/2 0) 28

In the vibrational Raman spectrum separation of each line from the centre of the
excitation line gives the Raman active vibrational frequency of the molecule.
A) hot band B) first overtone

C) second overtone D) fundamental

In the electronic spectrum the correct expression for Voontinuum limit 5

(D is the dissociation energy, E,, is the excitation energy and double prime for lower
electronic state)

A) Dg! + 8५, 8) Dg! - Ex ௦) 00 + ‏وت‎ D) None of these

In a 60 MHz instrument a chemical shift value of 2 ppm from TMS is equivalent to
Hz.

A) 30 B) 60 C) 120 D) 1200

The number of lines in the EPR spectrum of 12021 radical is
A) 1 B) 2 04 0) 6

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