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Model Papers of Class 11th (Chemistry) Subjective for SSC Annual Examination 2018

Model Paper CHEMISTRY (New) Inter Part-I

(Fresh/Reappear)

Note: Time allowed for Section -B and Section -C is 2 Hours and 40 minutes.

Section- B

Q-II) Answer any TEN parts. Each part carries FOUR marks

Calculate the percentage composition of each element in H³P0⁴
Explain the Aufbau principle.
State Moseley's law.
Sigma bond is stronger than pi( π) bond. Why?
Write the faulty postulates of KMT of gases.
Explain the difference in B.P^o of water at sea level and at high mountains.
Explain why amorphous solids are also called as "super cooled" liquids?
Write a note on leveling effect of acids.
Show that K_p = K_x(RT/V)^AN
Give the assumptions of collision theoty of reaction rate.
Define solubility. Just name the factors which affect solubility of a solute in a solvent.
What is a state function? Give its characteristics.
What are electrochemical cells? Give their types.

Section C

Marks: 40
Marks: 27
Note : Attempt any THREE questions. All questions carry equal marks.
Q-III) (a) Discuss the deviation of gases from ideal behavior.
(b) Calculate the wave number and wavelength of a photon when electron jumps from
Q-IV) (a) Show the conjugate acid base pair for the given species.
(i) CH₃COOH (ii) NH₃ (iii) H₂O
(b) Balance the given redox equations by the half-reaction method.
(i) X_n+ Cr₂ O^2-₇+ H⁺+Cr³⁺+H₂O
Q-V) (a) Explain vacuum distillation.
(b) Explain the effect of change in P on the equilibrium position of a reversible reaction.
Q-VI) (a) Give the postulates of VSEPR theory.
(b) Compare the rates of reactions of ionic and covalent compounds with reasons.