AP Inter 1st Year Chemistry Model Paper Set 1 with Solutions

Utilizing AP Inter 1st Year Chemistry Model Papers Set 1 helps students overcome exam anxiety by fostering familiarity.

AP Inter 1st Year Chemistry Model Paper Set 1 with Solutions

Time: 3 Hours
Maximum Marks: 60

Note : Read the following instructions carefully.

1. Answer all questions of Section – A. Answer ANY SIX questions in Section – B and ANY TWO questions in Section – C.
2. In Section – A, questions from Sr. Nos. 1 to 10 are of Very short answer type. Each question carries TWO marks. Every answer may be limited to 2 or 3 sentences. Answer all these questions at one place in the same order.
3. In Section – B, questions from Sr. Nos. 11 to 18 are of Short answer type. Each question carries FOUR marks. Every answer may be limited to 75 words.
4. In Section – C, questions from Sr. Nos. 19 to 21 are of Long answer type. Each question carries EIGHT marks. Every answer may be limited to 300 words.
5. Draw labelled diagrams, wherever necessary for questions in Section – B and Section – C.

Section – A

Note : Answer ALL questions.

Question 1.
Define sink and receptor.

Question 2.
Which is called “Milk of Magnesia” ? Give its use.

Question 3.
What is Lewis acid ? Give one example.

Question 4.
Write any two important uses of caustic soda.

Question 5.
Calculate kinetic energy in calories of 5 moles of nitrogen at 27°C.

Question 6.
What are silicones ? Give one example.

Question 7.
What are the oxidation number of the underlined elements in each of the following species? a) KMnO₄ b) MnO₄^-2

Question 8.
What is meant by dry ice ? Give its application.

Question 9.
An Alkyne ‘A’ undergo cyclic polymerisation by passing through red hot iron tube to give ‘B’. What are ‘A’ and ‘B’?

Question 10.
Mention the harmful effects caused due to depletion of ozone layer.

Section – B

Note : Answer ANY SIX questions.

Question 11.
Deduce : a) Graham’s law and b) Dalton’s law from kinetic gas equation.

Question 12.
Balance the following redox equation in acidic medium by ion- electron method :
Fe²⁺_(aq) + Cr₂O₇^2- → Fe_(aq)³⁺ + Cr_(aq)³⁺

Question 13.
State ane explain the Hess’s law of constant heat summation with an example.

Question 14.
Derive the relation between Kp and for the equilibrium reaction :
N_2(g) + 3H_2(g) ⇌ 2NH₃(g)

Question 15.
What is the cause for permanent hardness of water ? Explain the removal of hardness of water by Calgon method.

Question 16.
Explain the structure of Ethylene.

Question 17.
State Fajan’s rules with suitable examples.

Question 18.
Explain the structure of diborane.

Section – C

Note : Answer ANY TWO of the following questions.

Question 19.
What are the postulates of Bohr’s model of hydrogen atom? Write its limitations. Give any two differences between emission and absorption spectra.

Question 20.
What is a periodic proeprty ? How the following properties vary in a group and in a period ? Explain.
a) Ionisation enthalpy
b) Electronegativity
c) Electron gain enthalpy

Question 21.
Describe any two methods of preparation of benzene with corresponding equations. Explain the following benzene reactions:
a) Halogenation
b) Alkylation
c) Acylation
d) Nitration