12TH CLASS CHEMISTRY GUESS PAPER 2018 JKBOSE JAMMU
12TH CLASS CHEMISTRY GUESS PAPER 2018 JKBOSE JAMMU
Section
'A'
[LONG ANSWER TYPE QUESTIONS]
What are carboxylic acids? Describe the general methods of
preparation of carboxylic acids?
Or
How can aromatic aldehydes and
ketones be prepared by the following reactions?
(i)Fridel-Crafts reaction
(ii)Reimer-Tiernan reaction
State Raoult's Law and explain
it in case of volatile solute.
Define elevation in boiling
point and derive its relation with molecular mass ofnon‑
volatile solute.
How is molar conductivity related to concentration
of an electrolyte.
Based on conductivity values,
how will you explain a weak and strong electrolyte?
What are Primary and Secondary
Cells? Explain the working of lead storage cell.
What is Nernst Equation? How can
it be applied in calculating the equilibrium
constant for the cell
Zn(s)1ZnSO4(aq)11CuSO4 (aq)ICu(s)?
Predict the products of
electrolysis in each of the following:
(i) An aquous solution of copper
sulphate with copper electrodes,
(ii) An aquous solution of copper
sulphate with platinum electrodes,
(iii An aquous solution of sodium
chloride.
State and explain Kohlrauschs
law. What are its applications?
Explain the term electrode potential. How is
electrode potential measured?
Define colligative property. Discuss any one colligative
property.
What is abnormal Molecular
mass? Discuss Association.
Define depression in Freezing point and derive its relation
with Molecular mass of
non-volatile
solute.
Define
Osmotic Pressure. How it helps us to calculate molecular mass of non‑
volatile solute?
What
do you understand by relative lowering in vapour pressure? Show that it is a
colligative property.
Show
that depression in freezing point is a colligative property. How can it be used
to determine the molar mass of
solute?
What are ideal and non-ideal
solutions? Give reasons for
theirformation. Give one
example
in each case.
For More Questions Download PDF
