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65.

66.

67.

68.

69.

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71.

The material that cannot be used for construction of filament in hot wire thermal
conductivity analyser is

A) Tungsten B) Magnanin

C) Kovar D) Platinum

Which of the following is a classification of liquid chromatography ?
A) Paper chromatography

B) Column chromatography

C) Thin layer chromatography

D) All of the above

is known as heart of a gas chromatograph, where the fundamental
process of separation takes place.
A) Injection system B) Column
C) Thermal compartment D) Platinum

lons of different m/e ratio are separated by the difference in time they take to travel
over an identical path from the ion source to the collector. This is the working principle

) Magnetic deflection mass spectrometer
) Time-of-flight mass spectrometer

C) NMR spectrometer

D) Raman effect spectro photometer

In which part of the flame photometer aerosol is produced and fed into the flame
A) Burner B) Atomiser
C) Flame D) Regulator

Reference electrode that is used at high temperatures in pH measurement
A) Ag/AgCl electrode

B) Mercury/mercurous electrode

C) Hydrogen electrode

D) Glass electrode

If identical solutions are placed inside and outside the bulb of the glass electrode, it
is found that in spite of the apparent symmetry of the cell so formed, there exists an
emf of a few millivolt. This potential difference is called the

A) Asymmetry potential B) Symmetry potential

C) Acid error D) Alkali error

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