AP Inter 1st Year Chemistry Model Paper Set 3 with Solutions

Utilizing AP Inter 1st Year Chemistry Model Papers Set 3 helps students overcome exam anxiety by fostering familiarity.

AP Inter 1st Year Chemistry Model Paper Set 3 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 COD and BOD.

Question 2.
State the Hess Law of Constant Heat Summation.

Question 3.
Name any two man-made silicates.

Question 4.
Write Van der Waals1 equation.

Question 5.
What are intensive and extensive properties ?

Question 6.
How is Nitrobenzene prepared from Benzene ?

Question 7.
Name two adverse effects caused by acid rain.

Question 8.
A solution is prepared by adding 2 gm. of a substance A to 18 gm. of water. Calculate the mass percent of the solute.

Question 9.
Graphite is a good conductor. Explain.

Question 10.
What is Buffer Solution?

Section – B

Note : Answer ANY SIX questions.

Question 11.
What is Hydrogen bond? Explain the different types of Hydrogen bonds with examples.

Question 12.
Deduce (a) Boyle’s law and (b) Dalton’s law from kinetic gas equation.

Question 13.
Discuss the application of Le-Chatelier’s principle for the industrial synthesis of Ammonia.

Question 14.
Explain the structure of Diborane.

Question 15.
Write any two oxidising and two reducing properties of hydrogen peroxide.

Question 16.
What is Plaster of Paris ? Write a short note on it.

Question 17.
Balance the following Redox Reaction by ion-electron method.

Question 18.
Predict the shapes of the following molecules, making use of Valence Shell Electron Pair Repulsion (VSEPR) Theory.
(a) XeF₄
(b) BrF₅
(c) ClF₃
(d) H₂O

Section – C

Note : Answer ANY TWO questions.

Question 19.
Write about four quantum numbers and explain the significance of these quantum numbers.

Question 20.
Write an essay on s, p, d and f block elements.

Question 21.
Give two methods of preparation of acetylene. How does it react with water and halogens?