INTERMEDIATE-I YEAR CHEMISTRY
Model Paper-2
Time-3 hours Maximum marks: 60
SECTION-A (10x2=20M)
www.sakshieducation.com
Note: Answer all questions.
1. Define mole and calculate the number of molecules present in -7 1.12X10 ccof a gas
2. What is Boltzmann constant? Give its value.
3. The equilibrium constant for the reaction 2
constant for the backward reaction 28 s–1. What is the rate constant of the forward
reaction ?
4. What do you mean by autoprotolysis?Give the equation to represent the
autoprotolysis of water.
5. Write the balanced equations for the reactions between
i) Na O2 2 andwater. ii) K O2
6. What happens when magnesium metal is burnt in air?Give equation.
7. Define the terms TLV, contaminant and sink.
8. what is Global warming? name any two green house gases.
9. Both CCl4 and SiCl4 has stable octets of the central atoms, but SiCl4 is acidic.
2x y x y →∆
+ ← → is –
2 2 10 L mol . The rate
and water.
10. Discuss Markownikoff’srule with example.
www.sakshieducation.com
www.sakshieducation.com
SECTION-B
Note: Answer any Six of the following (6x4m=24marks)
11. Define the terms rms,average and most probable speeds of gas molecules.Give
their interrelationship.
www.sakshieducation.com
12. Balance the following equation by Ion electron method
2 3 Cr O NO Cr NO 2 7 2 3
13. Explain the spontaneity of a reaction interms of Gibbs free energy.
14. Complete and balance the following chemical equations.
i) 2 2 PbS s H O aq ( ) ( ) + →
iii) 3 2 2 Ca N s H O l ( ) ( ) + → iv) 2 Ca O s H O l ( ) ( ) + →
15. Write any one method of preparation of Diborane and discuss its structure.
16. What are buffer solutions? Give one example to each type of buffer.
17. What is Lanthanide contraction? Give its consequences.
18. Mention the characteristic properties of transition elements.
− − + − + → + in acidic medium
ii) 4 2 2 MnO aq H O aq ( ) ( ) −
+ →
SECTION-C
Note: answer any two questions (2X8=16M)
19. What are the main Postulates of Bohr’s theory of hydrogen atom?
Discus the importance of this model to explain various series of line spectra in
Hydrogen atom.
20. Write the salient features of Molecular Orbital Theory. He2 molecule does not
exist. Why?
21. Describe any two methods of preparation of Benzene. Explain the halogenation,
Friedal craft’s alkylation, Nitration and Sulphonation of benzene with equations.
Model Paper-2
Time-3 hours Maximum marks: 60
SECTION-A (10x2=20M)
www.sakshieducation.com
Note: Answer all questions.
1. Define mole and calculate the number of molecules present in -7 1.12X10 ccof a gas
2. What is Boltzmann constant? Give its value.
3. The equilibrium constant for the reaction 2
constant for the backward reaction 28 s–1. What is the rate constant of the forward
reaction ?
4. What do you mean by autoprotolysis?Give the equation to represent the
autoprotolysis of water.
5. Write the balanced equations for the reactions between
i) Na O2 2 andwater. ii) K O2
6. What happens when magnesium metal is burnt in air?Give equation.
7. Define the terms TLV, contaminant and sink.
8. what is Global warming? name any two green house gases.
9. Both CCl4 and SiCl4 has stable octets of the central atoms, but SiCl4 is acidic.
2x y x y →∆
+ ← → is –
2 2 10 L mol . The rate
and water.
10. Discuss Markownikoff’srule with example.
www.sakshieducation.com
www.sakshieducation.com
SECTION-B
Note: Answer any Six of the following (6x4m=24marks)
11. Define the terms rms,average and most probable speeds of gas molecules.Give
their interrelationship.
www.sakshieducation.com
12. Balance the following equation by Ion electron method
2 3 Cr O NO Cr NO 2 7 2 3
13. Explain the spontaneity of a reaction interms of Gibbs free energy.
14. Complete and balance the following chemical equations.
i) 2 2 PbS s H O aq ( ) ( ) + →
iii) 3 2 2 Ca N s H O l ( ) ( ) + → iv) 2 Ca O s H O l ( ) ( ) + →
15. Write any one method of preparation of Diborane and discuss its structure.
16. What are buffer solutions? Give one example to each type of buffer.
17. What is Lanthanide contraction? Give its consequences.
18. Mention the characteristic properties of transition elements.
− − + − + → + in acidic medium
ii) 4 2 2 MnO aq H O aq ( ) ( ) −
+ →
SECTION-C
Note: answer any two questions (2X8=16M)
19. What are the main Postulates of Bohr’s theory of hydrogen atom?
Discus the importance of this model to explain various series of line spectra in
Hydrogen atom.
20. Write the salient features of Molecular Orbital Theory. He2 molecule does not
exist. Why?
21. Describe any two methods of preparation of Benzene. Explain the halogenation,
Friedal craft’s alkylation, Nitration and Sulphonation of benzene with equations.
Post a Comment