[nilesh]

Discuss about kerala hse chemistry question papers here. Welcome to Courses.ind.in and this page is for kerala hse chemistry question papers discussion. If you are looking for information on kerala hse chemistry question papers then ask your question is as much details as possible in the “Reply” box provided below. The more detailed your question will be, the more easy will it be for our experts to answers your query. And if you have any updated or latest information on kerala hse chemistry question papers, then please share you knowledge with our experts in the “Reply” box below. Your reply will be published here and your knowledge can help many people. Thanks for stopping by at Courses.ind.in. Please visit again.

Hi buddy here I have come to get Kerala HSE Chemistry Question Papers , so would you plz provide me same here ??

[prince karak]

As you want here I am providing Kerala HSE Chemistry Question Papers on your demand :


MODEL QUESTION PAPER
CHEMISTRY
HSE-II
Time: 2hrs+15 mts
Score 60
1. Even crystals prepared with great care contain internal irregularities called crystal defects.
(a) Which stoichiometric defects causes decrease in the density of the crystal?
(1)
(b) Frenkel defect is not found in alkali metal halides. Why?
(1)
(c) Differentiate the semiconductors obtained by doping Silicon with: (i) Al (ii) P
(2)
2. (a) Calculate the boiling point of 0.05 M solution of Potassium Chloride?
(2)
(b) Name any two examples for Osmosis from daily life.
(1)
(c) Which process is used in desalination of sea water?
(1)
3. (a)You are given the following standard electrode potential values.
E°Al
3+
/Al = -1.66 V and E°Zn
2+
/Zn = -0.76 V.
(i) Draw a neat diagram of the Daniel cell using the above electrodes. Write the electrode
reactions.
(2)
(ii) Calculate the e.m.f of the above cell
(1)
(b) Suggest two materials other than Hydrogen that can be used as fuels in fuel cells.
(1)
4. (a) The unit of the rate constant k for two different reactions are given.
(i) mol L
-1
s
-1
(ii) mol
-1
L s
-1
Write respective orders of the reactions.
(2)
(b) The rate constants of a reaction at 700 K and 780 K are 0.011s
-1
and 0.105s
-1
respectively.
Calculate the energy of activation
(2)
5. (a) Physical and chemical adsorption respond differently to rise in temperature.
(i) Is this statement correct?
(½)
(ii) Establish your answer using a suitable graph?
(1½)
(b) Colloids show kinetic, electrical as well as optical properties. Give one each of kinetic
and optical properties
(1)
6. The modern process of extraction of Aluminium by electrolytic reduction of Alumina was
developed by two young Scientists.
(a) What is this process known as?
(½)
(b) Briefly discuss this process?
(2)
(c) How is Aluminium refined?
(½)
7. Assign reasons for the following:
(a) Ammonia has greater affinity for protons than phosphine
(2)
(b) SF6 is much less reactive than SF4
(1)

Kerala HSE Chemistry Question Papers