With the aid of a suitable example and labelled diagrams write a
detailed note on the physical behaviour of aqueous solutions of
ionic surfactants. Choosing at least three physical properties to
explain clearly the variance in each physical property as a
function of surfactant concentration.
a) With the aid of diagrams, describe the three
characteristics of d.c. series motor.
(b) Briefly explain the difference between squirrel cage induction
motor and wound rotor induction
motor in terms of construction.
(a) With the aid of suitable diagrams
and examples explain the following terms:
(i)
surface tension
(ii) surface
free energy
(ii) surface
active agent (surfactant)
(iii) Krafft point
1. (a) With the aid of a labeled sketch, describe an apparatus
for the generation of x-rays.
(b) With the aid of labeled sketches, describe the three primary
physical mechanisms for the absorption of x-rays in solids.
(c) Make a sketch of a typical x-ray spectrum generated by a
hospital apparatus, labeling three primary features of the
spectrum.
(d) For an x-ray apparatus containing a molybdenum target of
atomic number, z = 42:
(i) What is the wavelength for the...
1- Describe, with the aid of diagrams, the structure and
functions of the airways as they transition from the trachea to the
terminal bronchioles.
2- Describe, with the aid of diagrams, the oxygen-haemoglobin
dissociation curve and how it relates to the function of
haemoglobin.
With the aid of a labeled sketch, describe an apparatus for the
generation of x-rays. [2] (b) With the aid of labeled sketches,
describe the three primary physical mechanisms for the absorption
of x-rays in solids. [2] (c) Make a sketch of a typical x-ray
spectrum generated by a hospital apparatus, labeling three primary
features of the spectrum. [2] (d) For an x-ray apparatus containing
a molybdenum target of atomic number, z = 42: (i) What is the
wavelength for...
With the aid of a sketch, describe the mechanism of crevice
corrosion of metals. In your answer, you should indicate the
location of the different reactions, give the equations for the
reactions, and state the condition for a crevice to continue to
grow.