70.

721.

72.

73.

74.

78.

76.

77.

78.

The process inside a bomb calorimeter is assumed to be :
(4) isenthalpic (B) isobaric
(C) adiabatic (D) isothermal

Beer-Lambert law shows deviation of higher concentrations because :
(മ wavelength of incoming radiation experiences a variation at higher concentrations
(B) intermolecular interactions becomes significant at higher concentrations
(C) path length measurements errs at higher concentrations.
(D) none of the above

A substance which absorbs the wavelengths at the red end of the visible spectrum appears :

(A) ബ്ര (0) blue
(C) black (D) red
The internal standard used in proton NMR spectroscopy to calibrate chemical shift is :
4) DO (8) 0௦00,
(C) Tetramethyl silane (D) DMSO-Iy
Unit of chemical shift is :
(ಯ) ‏سهد‎ (8) ೫೬
©) MHz @) ஜு
Paper chromatography is an example for :
(A) Adsorption chromatography (B) Ton exchange chromatography
(©) Partition chromatography (D) None of the above

In a chromatography experiment the distance travelled by the solvent measured is 10 em.
If the distance travelled by the sample is 5 cm, what is the R, -value of the sample?

10 5
(5) T രു 10
‏م0‎ 5೬10 (D) None of these
An X-ray diffraction pattern is a plot of :
(A) A against d (B) @ against A
(C) 28 against intensity (D) none of these

‘Which one of the following is correct about TGA (Thermogravimetric analysis)?
(ಗಿ) Used to find out the melting point
(B) Used to find out the enthalpy of phase transitions
(C) 1683 a plot of heat flow Va temperature
(D) It is a plot of percentage weight loss against temperature and helps to find out
decomposition temperature of a sample

11 074/2016
[P.T.0)