AP Inter 1st Year Chemistry Question Paper March 2023

Access to a variety of AP Inter 1st Year Chemistry Model Papers and AP Inter 1st Year Chemistry Question Paper March 2023 helps students overcome exam anxiety by fostering familiarity. question patterns.

Note : Read the following instructions carefully.

1. Answer all the questions of Section – A. Answer any six questions in Section – B and answer 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 5 lines. 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 C.

Section – A

Note : Answer ALL the questions.

Question 1.
Name two adverse effects caused by csid rains.

Question 2.
What is Lewis acid? Give one example.

Question 3.
Give the values of gas constant R in different units.

Question 4.
What happens when magnesium metal is burnt in air ?

Question 5.
How many number of moles of glucose are present in 540 gms of glucose ?

Question 6.
What are the AH sign conventions for exothermic and en-dothermic reactions?

Question 7.
Write the conformations of ethane.

Question 8.
State the Hess’s Law of Constant Heat Summation.

Question 9.
Why is Gypsum added to Cement ?

Question 10.
What is Chemical Oxygen Demend (COD)?

Section – B

Note : Answer ANY SIX questions. (6 × 4 = 24)

Question 11.
Write a few lines on the utility of hydrogen as a fuel.

Question 12.
Explain the difference in properties of diamond and graph-ite on the basis of their structure.

Question 13.
State Fajan’s rules and give suitable examples.

Question 14.
Deduce (a) Graham’s law and (b) Dalton’s law from Kinetic gas equation.

Question 15.
What is Le Chatelier’s principle ? Discuss the application of Le Chatelier’s principle for the industrial synthesis of Ammonia.

Question 16.
Chemical analysis of a carbon compound gave the following percentage composition by weight of the elements present, carbon = 10.06%, hydrogen = 0.84%, chlorine = 89.10%, calculate the empirical formula of the compound.

Question 17.
Write any two methods of preparation of diborane.

Question 18.
Explain the formation of coordinate covalent bond with one example.

SECTION – C

Note : Answer ANY TWO questions. (2 × 8 = 16)

Question 19.
Describe two methods of preparation of ethane. Give any three reactions of ethane.

Question 20.
What are the postulates of Bohr’s model of hydrogen atom? Discuss the importance of this model to explain
various series of line spectra in hydrogen atom.

Question 21.
Write an essay on s, p, d, f block elements