This document provides instructions and questions for a chemistry exam. It states that the exam is for Chemistry 9701, Paper 2, Structured Questions, lasting 1 hour and 15 minutes. It provides instructions for candidates to write their name, roll number, and to answer all questions in dark blue or black pen. Questions cover topics like the kinetic molecular theory of gases, chemical reactions involving ethanol, ethane, ethene, cyclohexene, malic acid, and determining an empirical formula from elemental composition data. Students are asked to write balanced equations, determine products, draw structural formulas, and explain reaction types.

1. Gandaki Higher Secondary Boarding School
(Regional School)
Lamachaur, Pokhara
Candidate Name: Roll No.:
Chemistry 9701
March 2013
Paper 2 AS Structured Questions 1 hour 15 minutes
Candidates answer on the question paper
No additional materials are required.
READ THESE INSTRUCTIONS FIRST.
 Write your name & roll no. on the space provided.
 Write in dark blue or black pen.
 You may use a soft pencil for any diagrams, graphs or rough working.
 Do not use paper clips, highlighters and glue or correction fluid.
 Answer all questions.
 You may lose marks if you do not show your working.
 At the end of the examination, fasten your work securely together.
 The number of marks is given in brackets [ ] at the end of each questions or part questions

3. Total 19

4. Q.N 2
a) State two basic assumptions of Kinetic theory of gas
2
b) State two conditions under which the behaviours of real gas approaches that of an ideal gas
1
c) Place the following gases in the decreasing order of ideal behaviours
Ammonia, Nitrogen, Neon
Most ideal…………………………………………………………………least ideal
Explain your answer
2
d) Why a liquid eventually becomes a gas as temperature is increased? Explain on the basis of
kinetic molecular model.
2
e) Ethane (CH3- CH3 ) and fluromethane(CH 3 F) are isoelectronic ie they have same no of electron
in their molecules
calculate the total no of electron in one molecule of CH 3
1
f) Boiling point of two compounds are given below
Compounds Boiling Point
CH3- CH3 184.5
CH 3 F 194.7
Suggest the explanation for the following
i) Close similarity of boiling point of two compounds
ii)Slightly higher boiling point of CH3F
2
[Total: 10]
Q N 3 Ethene gas in Laboratory is obtained from ehhanol
a) Write the balanced equation with necessary condition .
1
b) What type of reaction is this?
1

5. c) Same gas can also be obtained from haloalkane , write the equation with necessary
condition
1
d) When ethane gas is passed to aq. HBr and acidified potassium permanganate , write the colour
changes and organic product formed in each case
Colour at Start Aq. HBr Cold.dil acidified KmnO4
Colour after reaction
Structure of product
3
Cyclohexene has following structure
What is the molecular formula? 1
Draw the structural formula when cyclohexene is reacted with bromine?
1
Name the type of reaction
1
How does cyclohexene react with hot and conc. KMnO4 solution write the structure of product
formed.
2
[Total: 11]

6. QN 4
Malic Acid has structural formula HO2CCH2CH(OH)CO2H
Some common reaction are shown below Give the structural formulae of organic compound A to F
6
b) What type of reaction is each of the following conversion?
Malic acid to C ………………………………….
C to D ………………………………………….
C to E…………………………………………
3
c) Suggest one major commercial use of compound A or B
1
HO2
CCH2
CH(OH)CO2
H
B
Heat with
CH3
OH/H+
Conc.H2
SO4
Heat with
CH3
COOH/H+
C
D E
Cold,dil,MnO4
-
/H+
Steam/H3
PO4
Hot,conc MnO4
-/H+
A
F

7. d) Draw fully displaced formula of malic acid indicating with an asterisk ( *) the chiral carbon
atom
3
f) Draw the skeletal formulae of each of the stereo isomers of C
3
g) An organic compound which occur in fruit has composition by mass C,37.5% H, 4.13% and
O 58.3% calculate the empirical formula of organic compound
3
[Total: 19]