83, This type of manometers is used measure pressure and contains upto 14 experimental flasks
and small U-tube capillaries are connected to the same reference flask by gassing manifold.

(வ Warburg manometer (B) Tilted manometer
(0) Gilson constant manometer (D) A U.tube manometer
84. The first form of chromatography was used by Martin Consden and Gordon to separate a
mixture of amino acids.
(ಹ) Paper chromatography (B) Thin layer chromatography
(C) Column chromatography (D) Adsorption chromatography
85, The following X-ray technique and methods of X-ray spectroscopy are based on the scattering
of X-rays by crystals.
(ಯ) X-ray absorption (B) X-ray reflection
(©) X-ray diffraction (D) X-ray fluorescence

36. The output signal voltage of an amplifier is 5 V and the output noise voltage is 0.005 V.
Determine the signal-to-noise power ratio in decibels. Ignore the source resistance. The
signal to noise power ratio in decibels is :

ക 70dB (B) 1068
(¢) 6068 (D} 1000 dB

37. Astrain gauge of 120 Q (nominal) resistance with a gauge factor GF = 2 is mounted on a rod.
The 5 m rod stretches by only 2 mm under a heavy stress. Find the change in resistance is :

(ക 0.096 © (8) 1kQ
(0 0.05 © (D 05Q

38. The following irregular ECG shows what type of abnormal of ECG signal :

(A) Sinus tachycardin (B) Atrial flutter
(C) Ventricular fibrillation (D) First degree AV block

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