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Chemistry 11 Important Questions Set 9



Q.2 Write short answers to any EIGHT (8) questions:


L Write assumptions of stoichiometry Why does actual yield always less than theoretical


yield? Define Avogadro's number and give one example


v. Define Rf value (retardation factor)


v. What are different types of chromatography? vi. Derive numerical value of has constant R in Suits


vil. Derive Avogadro's law by giving one example.


vlil State Dalton's law of Partial Pressure


ix. What are different types of solubility curves?


Write names of different types of colligative properties of solutions X


xi. Explain hydration energy of ions briefly.


CH 1.04


ICH 1. Q


CH 1,038


(CH2.04)


(CH3025


(CH.Q2 ICH 9. Q


Q.3 Write short answers to any EIGHT (8) questions:


3 What are Debye forces? iWhy HF has lower boiling point than H07


iii. What are crystalline solids? iv. What is a unit cell?


V. What is atomic absorption spectrum?


vi. What is stark effect?


vii. What is uncertainty principle?


viii. Explain de-Broglie's equation


ix. What are conditions to maximize yield of NH?


X. How Kc is used to find the direction of reaction?


xi. What is reaction intermediate, give example xil. Define order of reaction, with example


12x8-10


(CH 4. Q (CH 4.Q12


(CH 40


ICH 4. Q SE


(CH 3 054


(CH SQ67)


ICH 5.0 72


(CH 5, Q70 (CH 8.017)


(CH8Q12)


(CH 11.020 (CH 11,07


Q.4 Write short answers to any SIX (6) questions.


Explain with reason that it bonds are more diffused than a bond ii. Ionization energy decreases down the group and increases along the period, ge reason


ill. Write two postulates of VSEPR theory.


iv. Prove AE = qv.


Prove op=AH. vi. Define covalent bond. Give one example.


vii. Calculate the oxidation number of Mn in KMnO Vill. What is function of salt bridge in Galvanic cell? ix. What is difference between oxidation and reduction process, give one example of each


(CH 6, Ex Q18 (CH 6, Q12 & 3)


ICH 6, Q42 (CH 7,016


ICH 7.0 17 (CH 6, 028


ICH 10, Q12


(CH 19.03


(CH 18, Q


V.


1041


4) Standard enthalpy of formation


Section II


Note: Attempt any THREE questions from the following


a) 10g of H,PO,, has been dissolved in excess of water to dissociate it completely into s b) Give uses of liquid crystals. C.6 a) What is Boyle's law of gases? Give its experimental verification


b) What is spectrum? Differentiate between continuous spectrum and line spectrum a) Explain atomic orbital hybridization with reference to structures for Cars and GH


Q.7


b) Define the following enthalpies and give one example for each i) Standard enthalpy of atomization


0.8 a) Define following terms. 1) Instantaneous rate


iii) Order of reaction b) Nalg) and Hilg) combine to give Nile). The value of KC in this reaction at 500


this reaction


Q.9


a) What do you mean by depression of freezing point b) What is electrochemical series and any three application of this series



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