Write short answers to any EIGHT (8) questions:
Define stoichiometry. Give two assumptions for stoichiometric calculations Justify it
ii. How percentage yield is calculated?
Define Avogadro's number. Give one example W. Differentiate between stationary phase and mobile phase in chromatographic technique?
What is ether extraction?
vi. Derive Avogadro's law from KMT.
vil. Why the graph plotted between pressure and volume moves away from pressure a
vill Calculate SI unit of 'R' gas constant.
ix. Why does pilots feel uncomfortable breathing high altitude?
State Raoult's law. Give one mathematical expression
xi. Relative lowering of vapour pressure is independent of temperature Justify this statement
xii. Give two applications of colligative properties
Q.3 Write short answers to any EIGHT (8) questions:
(28-16)
What are dipole dipole forces? Give one example 11. Name the factors which affect the London forces
iil Cleavage of the crystals is itself anisotropic behavior, explai
iv. Define transition temperature with two examples v. Why cathode rays are also called as electron?
(CH 5. Q
vi. Write down any four properties of positive rays?
(CHS. Q
vil. Define spectrum and name any two types of spectrum.
(CH 5. Q
vill. For Azimuthal quantum number, 7-2 and 1-3, calculate the total values of magnetic quantum number ( (CH 5. Ex Q14
ix. How equilibrium constant (Ke) predicts direction of a reaction?
(CH 8, Q
Define pH and write how it is helpful to know nature of solutions xi. What do you mean by order of reaction? Give two examples X.
(CH 8,
Q 23 & 20 (CH 11, Q
xil. What is the effect of temperature on rate of chemical reaction? Also write Arrhenius equation
(CH 11.0
V. iv. Draw the hypothetical orbital picture of Her molecule according to MOT Define enthalpy of formation with an example.
Q.4
Write short answers to any SIX (6) questions:
(2x612)
Bond distance is the compromise distance between two atoms. Justify
(CH 6, Ex Q1800) (CH 6, Q
Write down the two postulates of VSEPR theory.
iii. Differentiate between covalent and co-ordinate covalent bond.
(CH 6. Q3
(CH 6, Q5
(CH 7, Q 24
vi. Prove q = AE.
(CH 7. Q
vil. Calculate the oxidation numbers of the elements underlined: (a) NaPOs (b) HNO vili. How salt bridge maintains the electrical neutrality in the cell? Justify.
(CH 10, Q 11 & 12
(CH 10, Q
ix. What is standard hydrogen electrode (SHE)?
(CH 10, Q1
Section II
Note: Attempt any THREE questions from the following:
a) Calculate the number of grams of K:50. and HO produced when 14 gram of KOH reacts with excess following equation:
of He under th (3x8-24)
2KOH+H,SO,K,SO, +2H,O
b) Explain the structure of ice on the basis of hydrogen bonding Q.6 a) State Charles's law. Explain its experimental verification,
b) Write down experiment that how neutrons were discovered a) Define ionization energy, write factors affecting lonization energy and explain its trend along group
Q.7 b) Prove that: AH-4,
1041
a) A buffer solution is prepared by mixing 0.2M CHICOONa and 0.5 M CHICOOH in 1dms of solution. Calculate prof solution. PK of acid is 4,74,
Q.8
(04)
b) Explain energy of activation.
104)
3) Define solubility curve. Explain different types of solubility curves with the help of graphs b) Describe electrochemical series. Give its three application,
Q.9
Q.5
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