71.

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80.

The spectroscopic technique that deals with the emission of secondary electron is -

(A) X-ray fluorescence (B) Photoelectron Spectroscopy

(C) Ion scattering spectroscopy (D) Auger electron spectroscopy
The ESR spectrum of benzene radical (C,H, )is :

(4) Septet (B) Sextet

(C) Quartet ↴ (D) Singlet

Identify the organic compound, which shows a septet around 1.5 ppm and a doublet around
0.9 ppm in the 'H nuclear magnetic resonance spectrum :

(A) C€,H,COCH, (B) C,H,-CO-CH,

(¢ (CH,),CHNO, ൩) CH,CH,NO,

Which is the analytical technique based on the principle of selective adsorption?
(A) Differential scanning calorimetry © (8B) Chromatography

(C) Mass spectrometry (D) ‘Thermo-gravimetric analysis
Electron, proton and neutrons belong to the class of :

(A) Bosons (B) Boltzons

(0) Fermions (D) None of the above

If the partition function of systems A and B are ¢, and ‏رق‎ and their energies Ea and En
respectively. What will be the total partition function and total energy of the two systems?
(ಯ) #, > सत्‌ क, )8( 4,+¢, and E,+E,
(0 $,*¢, and E,+Ey (0) ¢,+¢, and E,xE,

In a grand canonical ensemble, which all parameters are the same for all members of the
ensemble?

(A) N,VLE By இருப்‌

@ N,V,T (0) ‏اس‎ ۰۶
The order of radioactive disintegration is :

(A) 3 (B) 2

(0 9 (D) 1 ८
Identify the transformation, which has a negative value for enthalpy change :

(A) Na, > Na, (B) Na, किन

6 டெரர்‌ (¢) €, ~>
Joule-Thomson expansion is :

(A) 0 (B) Isentropic

(0) Isothermal ൩) Isochoric

020/2016 12 A