AP Inter 1st Year Chemistry Question Paper April 2022

Access to a variety of AP Inter 1st Year Chemistry Model Papers and AP Inter 1st Year Chemistry Question Paper April 2022 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 an¬swer 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.
Define Normality.

Question 2.
State Hess’s law of constatn Heat Summation.

Question 3.
How many times methane diffuses faster than Sulphur dioxide ?

Question 4.
Write the conjugate acid and conjugate base of each of the following :
a) OH^–
b) H C O₃^–

Question 5.
Define the term Hydride. Name the three types of Hydrides:

Question 6.
What is plaster of paris ? Write its uses.

Question 7.
What happens when Mg(N0Osub>3)₂ is heated ? Give the balanced equation.

Question 8.
Why does BF₃ behave as a Lewis acid?

Question 9.
Explain why atomic radius of Ga is less than that of Al.

Question 10.
Write Wurtz reaction.

Section – B

Note : Answer any SIX questions.

Question 11.
State Fajan’s rules, and give suitable examples.

Question 12.
Explain the hybridization involved in PC1₅ molecule.

Question 13.
A carbon compound contains 12.8% carbon, 2.1% hydrogen, 85.1% bromine. The molecular weight of the compound is 187.9. Calculate the molecular formula.

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

Question 15.
What is Lechatelier’s principle ? Explain the effect of Temperature and Pressure on the industrial synthesis of Ammonia.

Question 16.
What is the cause for the permanent Hardness of water ? Ex-plain Calgon method for the removal of Hardness of water.

Question 17.
Explain:
a) Diamond has high melting point.
b) Graphite is a good conductor.

Question 18.
Explain the following:
a) Entropy
b) Standard enthalpy of formation

Section – C

Note : Answer any TWO questions.

Question 19.
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 20.
Define IE₁ and IE₂. Why is IE₂ > IE₁ for a given atom ? Dis-cuss the factors that effect IE of an element.

Question 21.
a) What is Geometrical isomerism? Draw cis and trans isomers of the following compounds.
(i) CHC1=CHC
(ii) C₂H₅CCH₃ = CCH₃C₂H₅
b) How do we get Benzene from acetylene? Explain Nitra¬tion and Alkylation of Benzene.