JUNIOR INTER CHE.IMPORTANT QUESTIONS

VASAVI JUNIOR COLLEGE

NARASARAOPET – 522 601

Chemistry Dept.

BLUE PRINT weightage ACCORDING TO BOARD OF INTERMEDIATE form 2012-13

S.NO.	UNIT NAME	LAQ	SAQ	VSQ	TOTAL MARKS
01.	ATOMIC STRUCTURE	08	--	--	08
02.	PERIODIC TABLE	08	--	--	08
03.	CHEMICAL BONDING	08	(OR) 4+4	--	08
04.	STATES OF MATTER	--	04	02	06
05.	STIOCHIOMETRY	--	04	02	06
06.	THERMODYNAMICS	--	04	--	04
07.	CHEMICAL EQUILIBRIUM & ACIDS-BASES	--	04	02	06
08.	HYDROGEN AND IT’S COMPOUNDS	--	04	--	04
09.	ALKALI AND ALKALINE EARTH METALS	--	04	(OR)2+2	04
10.	GROUP 13 ELEMENTS	--	04	(OR)2+2	04
11.	GROUP 14 ELEMENTS	--	04	(OR)2+2	04
12.	ENVIRONMENTAL CHEMISTRY	--	--	2+2	04
13.	ORGANIC CHEMISTRY	--	4+4	02	10
	TOTAL MARKS				76

Note * mark questions must be read by dull students

01.  ATOMIC STRUCTURE (8 Marks)

LONG ANSWER QUESTIONS

*1.      a) What are the postulates of Bhor’s model of Hydrogen atom?

                                                                             (Mar, 2005, 2006,. 2008, 2009, 20112012, 2013)

b) Discuss the Importance of this model to explain various series of line spectra in hydrogenatom                              (OR)                      (Mar, 2005, 2006, 2008, 2009, 2011,)

     What are the limitations of Bhor’s Atomic model (Mar, 2013)

                                                       (OR)

                 Explain de-Brogle’s wave equation for dual behavior of matter.  Discuss it’s significance to  

                 Microscopic particles like electrons.                  (Mar, 2012)       

*2. What are quantum number’s and explain different types of quantum numbers with significance

    (May  2006, 2007, 2008, 2010, 2013, Mar, 2010)

SHORT ANSWER QUESTIONS.

3)  a) Eplain the difference between emission and absorption spectra?

     b) Explain i) Aufbau principle ii) paulis exclusive principle iii) Hund’s Rule iv) Zeeman effect

     v) stark effect.

4) a) Explain the postulates of plank’s quantum theory.

    b) Explain the photo electric effect.

5. a) Define the Heisen berg’s uncertainity principle and give It’s significance.

    b) Explain the sailent features of quantum mechanical model.

02. PERIODIC TABLE (8 Marks)

Long Answer questions

*6. Define IE₁ and IE₂, why IE2>IE1 for a given atom? Discuss the any four factors that effecting IE of an element.                                              (Mar, 2006, 2008, 2009, 2011, 2012, 2013, May 2009, 2013)

*7. What is periodicity? How the following properties vary in a group and in a period? Explain

                                                                                          (Mar,  2007,  May, 2006, 2007, 2008, 2010, 2012)

            a) Atomic radius b) IE c) EN  d) electron gain Enthalpy  e) Nature of oxides

*8. Write an essay on s, p, d, and f block element’s (Mar, 2005, May 2011)

SHORT ANSWER QUESTIONS

9. What is lanthanide contraction? What are it’s consequences (Mar, 2006)

10. What is diagonal relationship?  Give one pair of elements that have this relation? (May 2008, 2010)

11. Write any four characterstic properties of transitition elements

12. Explain i) electron affinity ii) elecro negativity.

13. a) Why electron affinity of chlorine is more than that of fluorine explain (Model questions)

      b) Define modern periodic law

14. a) What are the doberneir’s traids and give an example.

     b) Which of the ion is the biggest in size among them and give the order of

          size, F^-,O^-2, N^-3, Na⁺, Mg⁺², Al⁺³, (Model questions?)

03. CHEMICAL BONDING (8 Makrs)

LONG ANSWER QUESTIONS

*15. What do you understand by hybridisition? Explain Different types of hydbridisation

     SP, SP², SP³, SP³d¹, SP³d², with suitable examples

                                                          (Mar, 2006, 2008, 2011, 2012, 2013, May, 2006, 2008,2011,  2013)

*16. Give an account VSEPR theory and given It’s Applications (Mar, 2005, 2007, May, 2007)

*17. Given the molecular orbital energy diagrams of    a) N₂    b) O₂  

         calculate the respective Bond order and magnetic nature of N₂ and O₂ molecules

         (Mar, 2009, May, 2010)

SHORT ANSWER QUESTIONS

*18. What is Hydrogen Bond explain different types of Hydrogen bonds with suitable example

     (Mar, 2009)

*19. Explain the formation of coordinate covalent bond with two examples (Mar, 2011, May, 2013)

20. What are the factor’s favourable for the formation of Ionic compounds (Mar, 2001, 2008)

*21. Explain Hydridization involved in i) PCl₅ (Mar, 2012,) ii) SF₆   (May, 2012)

22. Define Dipole moment.  Write It’s applications.

23. Explain Fajan’s Rules with suitable examples.

VERY SHORT ANSWER QUESTIONS

24. What is octet rule?

25. What is meant by localized orbitals.

26. Why argon does not form Ar₂ molecule?

27. Which of the two ions Ca⁺²  (or) Zn⁺² is more stable and why?

28. Define Covalent bond, Ionic bond, Sigma bond, Pie bond explain with one example

      and Resonance structure for NO₂, NO^-₃, SO₃

04. STATES OF MATTER (6 Marks)

SHOR ANSWER QUESTION

*29. What are the postulates of kinetic molecular theory of Gases (Mar, 2006, 2008, 2011, 2012, 2013)

*30. Deduce a) Boyle’s law b) Charle’s law  c) Graham’s law d) Dalton’s law from kinetic gas equation.                      

            e) Avogadro’s law                                                                                (May, 2011, 2013)

*31. State and explain the Dalton’s law of partial pressure and problems (Mar, 2007, May, 2010)

*32. State and explain Graham’s law of diffusion? And Problems (May , 2006, 2010)

*33. Define a) RMS  b) Average  c) most probable speeds of gas molecules.  Give their interrelation ship                                                                                                                (Mar, 2011)

*34. Find RMS, Most probable and Average speeds of CO₂, and SO₂ at 27⁰_C   (May, 2009)

*35. Define a) Boyle’s law  b) Charle’s law  c) Agogardo’s law   and from above gas laws derive

Ideal gas   equation.  (Mar, 2007)

VERY SHORT ANSWER QUESTIONS

*36. What is kinetic energy of i) 5 moles of N₂ at 27⁰_C              (Mar, 2010, 2013)

                                                  ii) 2 moles of O₂ at 27⁰_C          (May, 2011)

 iii) 3 Moles of CO₂ at 27⁰_C   in calories. (May, 2013)

 iv) 2 moles of Ideal gas at 27⁰_C    (Mar, 2008)

37. Which of the gases diffuse faster among N₂, O₂, and CH₄.  Why explain Reason, (Mar, 2002)

                                                                                                                                    (May, 2009)

38. How many times methane diffuses fast than sulphur dioxide?

39. What are Isotherms and Isobars?

40. What are STP conditions

41. Why the gas constomt ‘R’ is called universal gas constant.

42. What is Bollzmann’s constant? Give It’s value.  (Mar, 2012)

43. What is Compressibility factor?

44. What is Surface tension?

45. Why pressure cooker is used for cooking food on hills?

46. Define Viscosity. What is coefficient of viscosity? Give its units.

47. What is laminar flow of liquid.

05. STOICHIOMERTY      (6Marks)

SHORT ANSWER QUESTIONS.

*48. A) Balance the following redox equation of Ion-electron method (or) Half reaction method in

              aicidic medium

a) Br^-+SO₄^-2   Br₂+SO₂ (May, 2011, 2013)

b) MnO^-₄+SO₃^-2     Mn⁺²+SO₄^-2  (Mar, 2009, 2011, May, 2006, 2008)

c) MnO^-₄+C₂O₄^-2    Mn⁺²+CO₂ (Mar,2010)

d) CrO₇^-2+NO^-₂    Cr⁺³+NO^-₃ (Mar, 2004, 2005, May, 2007)

e) H₂SO₄+HBr     SO₂+Br₂                         (Mar, 2012)

* B) Balance the following redox equation by Ion-electron method (or) Half reaction method in

      basic medium

a) MnO^-₄+ I^-    MnO₂+I₂

b)  P₄  PH₃+H₂PO^-₂

*.49. Determination of empirical formula and molecular formula problems

                                                                                                        (Mar, 2008, 2011, May, 2004, 2009, 2011)

VERY SHORT ANSWER QUESTIONS

50. Indentification of oxidation numbers for molecules (or) Ion’s (Mar, 2011, May, 2010, 2011)

51. The Empirical formula of compound is CH₂O.  It’s molecular weight is 90.  Calculate the molecular formula of the compound.  (Mar, 2013, May, 2013)

52. What are the disproportion and compropotion reactions. Give example (Mar, 2010)

53. How many moles of glucose are present in 540 gms. of glucose (C₆H₁₂O₆)  (May 2010)

54. What volume of CO₂ is obtained at STP by heating 1) 4g of CaCO₃ (Mar, 2012,)

                                                                                         2) 10 g CaCO₃  (May , 2009)

55. Calculate weight of 0.1 mole of sodium carbonate.

56. Define Molarity, Normality, Molality, mole fraction and their Model problems.

57. What do you meant by significant figures.

06. theromodynamicS (4 Marks)

SHORT QNSWER QUESTIONS

*58. State and explain the Hess’s law of constant Heat summation (Mar, 2010, 2011, 2012, 2013,

                                                                                                              May, 2013)

*59. State the first law of thermodynamics Explain It’s mathematical notation.

*60. a) Define Heat capacity. What are Cp and C_v   Derive Relation between Cp, and C_v (or) Show that         

        Cp-Cv=R

*61. What is entropy? Explain with example.

62. State the second law thermodynamics and explain it.

63. Explain spontaneity of process in terms of Gibbs energy.

VERY SHORT ANSWER QUESTIONS.

64.  Define a system and surroundings. Given an examples.

65. State the third law of thermodynamics

66. What extensive and Intensive properties give an examples.

*67. Define enthalpy, i) enthalpy of combustion ii) Standard enthalpy of sublimation, iii) standard enthalpy of formation iv) standard enthalpy of atomization v) Standard enthalpy of fusion vi) Standard enthalpy vapoursation. explain with an example.

07. chemical equilibrium and acids & bases (6 Marks)

SHORT ANSWER QUESTIONS.

*68. What is Lechatlier’s principle? Discuss briefly the factor’s which can influence the equilibrium

            APPLICATIONS                                                                                         (Mar, 2010, 2012)

i) N_2(g)+3H_2(g)  2NH_3(g) (Mar, 2011)

ii) 2SO_2(g) +O_2(g)    2SO_3(g)                                    

 *.69 Derive Relation between Kp and Kc for equilibrium reactions.

i) N_2(g)+3H_2(g)  2NH_3(g) (Mar, 2013)  ii) 2SO_2(g) +O_2(g)    2SO_3(g)  (May, 2013)                                                       

*.70.  Explain Lewis acid – base theory with suitable examples (Mar, 2011)

*71. Explain Bronsted – Lowry Acid – base theory with suitable example.  (Mar, 2010)

*72. Define pH of solution and calculate the pH of the given solution

         i) 3.5X10^-3 M Hcl (May, 2013)   ii) 0.05 M NaoH (Mar, 2013)     iii) 10^-8 M Hcl & Model problems

73. Explain the term “Hydrolysis of salts” with example. Discuss the pH of the following types of salt solutions

        i) Salt of strong acid and weak base       ii) Salt of strong base and weak acid

74. Define buffer sol and problems on buffer solution             Model problems

             i) pH=pKa+log        ii) pOH=pKb+log    iii) pH+pOH=14

75. Write a note on i) Common ion effect ii) solubility product & explain each with one example.

VERY SHORT ANSWER QUESTIONS

76. Write relation between Kp and Kc with examples.

77. Define Ionic product of water and give Its units.

78. What is degree of Ionization.

79. What is conjugate Acid- Base pair? Give example

80. Define equilibrium constant

81. What is homogenous equilibrium and give two examples.

82. What Heterogonous equilibrium Give two examples.

08. HYDROGEN AND ITS COMPOUNDS (4 Marks)

SHORT ANSWER QUESTIONS

*83. How to prepare the Hydrogen peroxide (H₂O₂) by using

 i) Electrolytic process (Mar, 2005, 2007, 2010, 2011, 2012, May, 2006, 2007, 2010)           

ii) Auto oxidation method (or) Industrial method.

*84. How hydrogen peroxide can function as an oxiding as well as reducing agent. Explain with examples                                                   (Mar, 2003, 2004, 2006, 2008, 2009, May, 2009, 2011)

*85. Explain the term Hard water and soft water write note on the

i) Ion exchange (or) permutit (or)  Zeolite method 

      ii) Calgon method for the removal of Hardness of water (May, 2002, 2008, 2013)

*86. Write few lines of the utility of hydrogen as a fuel (Mar, 2013)

87. Write a note on heavy water.

VERY SHORT ANSWER QUESTIONS

88. Eplain types of Hardnes of water and what are the causes for Hardness of water (Mar, 2009, 2011)

89. Mention three uses of i) Hydrogen peroxide    ii) heavy water (Mar,2008,  2012, May, 2010)

90 What do you meant by Auto protolysis? Give the eqation for it

91. Explain the term synthetic gas (or) syn gas

92. Name the Isotopes of Hydrogen

93. What is meant by coal gasification? Explain the relavented  balanced equation.

94. Why is dihydrogen used in welding of high melting metals.

09.ALKALI AND ALKALINE EARTH METALS (4 Marks)

SHORT ANSWER QUESTIONS.

*95. What do you know about castner – kellner process? Write the principle involved in it.

*96. Write any three Bioligical importance of mg⁺² and Ca⁺² (May, 2010, 2013, Mar, 2013)

*97. Discuss the various reactions that occur in the solvay process for preparation washing soda (or) sodium carbonate.

*98. Give an account of the properties of washing soda

*99. How to prepare plaster of Paris and gives any three uses.

100. Write a few lines about cement

VERY SHORT ANSWER QUESTIONS.

101. Why alkali metal not found in free state in nature? (Mar, 2013)

102. Describe the important uses of caustic soda (NaoH) (May, 2013)

103. Describe the important uses of soium carbonate.

104. Lithium salts are mostly Hydrated. Why?

105. Why is gypsum is added to cement?

106. What happens when magnesium metal is burnt in Air?

107. What are the biological importance of Na⁺ and K⁺ ions

108. What is the Average composition of Portland cement

10.  group 13 elements or . III A GROUP ELEMENTS (4Marks)

SHORT ANSWER QUESTIONS

*109. Explain the structure of Diborane (Mar, 2007, 2009, 2013, May, 2006, 2007, 2009, 2011)

*110. How does diborane react with following (May, 2012)

           a) NH₃ (Mar, 2010)  b) H₂O  c) CO   d) N(CH₃)₃

*111. Explain the Borax bead test with suitable example (Mar, 2013)

VERY SHORT ANSWER QUESTIONS

112. Give two methods of preparation diborane

113. Explain structure of boric acid (or) ortho boric acid.

114. Give the formula of borazine.  Why It is called Inorganic benzene.

115. What is the hybridization involved in diborane and borazine.

116. Write the structure of AlCl₃ as dimer

117. Give the formula of a) Borax b) Colemanite

118. Explain Inert pair effect.

 11.  group 14 elements or  IVA  GROUP ELEMENTS (4Marks)

SHORT ANWER QUESTIONS

*119. What are the differences between diamond and graphite? (Mar, 2007, May, 2004, 2011)

120. What are silicones? How are they prepared? Give one example. What are they their uses.

VERY SHORT ANSWER QUESTIONS

121. Why diamond is Hard (Mar, 2011, May, 2013)

122. Why graphite is good conductor of electricity and diamond is not explain

       (Mar, 2009, May, 2009, 2010)

123.What is allotropy? Given crystalline allotropies of carbon and mention the hybridization present in them (Mar, 2013, May 2013)

124.  Why is CO poisonous (Mar, 2013)

125. How water gas (or) Blue gas (or) synthetic gas (or) syn Gas is prepared. (Mar,  2008, 2010, 2012)

126. How producer gas prepared

127. How does graphite function as a lubricant. (Mar, 2011)

128. i) Diamond is used precious stone. explain.   Ii) Diamond has high melting point. Explain.

129. C-C bond length in graphite is shorter than C-C bond length in diamond. explain

130. Write uses of i) ZSM-5    ii) Dry ice.

12. ENVIRONMENTAL CHEMISTRY (4Marks)

VERY SHORT ANSWER QUESTIONS.

131.Define Sink and Receptor.Give two examples each of them (Mar, 2011, 2013)

132. What is Chemical oxygen demand (COD) (May, 2009, Mar, , 2008, 2010)

133. What is Bio-chemical oxygen demand (May, 2009, Mar, 2008,  2010)

134.  i) What is Green House effect (or) Global warming (May, 2013)

        ii) Green House effect is caused by …… and ….. gases.

135. i) Which oxides cause for acid rain? And what is its pH value (Mar, 2013)

        ii) Name four adverse effects caused by acid rains (Mar, 2008, May, 2011, 2013)

136. i) What is ozone Hole.  How it is formed in the stratosphere. What is the advantage of ozone layer  

                                                                                                  (Mar,2012)

       ii) Give the chemical equations involved in the ozone depletation of CF₂ Cl₂

       iii) What gases are caused for depletation of ozone.

137. Explain about the following  i) Smoke   ii) mist  iii) Smog  iv) PAN  v) TLV (Mar, 2012)

        vi) Eutrophication  vii) Explain about green Chemistry  (4 Marks)

13. ORGANIC CHEMISTRY (10Marks)

LONG ANSWER QUESTIONS

*138.  Give two methods of preparation of ethylene. Give equation for the reaction of ethylene with the following (Mar, 2004, 2010, 2011, May, 2013)

         a) Ozone  b) Hypochlorus acid (Mar, 2010)

         c) Cold and dil alk KMnO₄  d) Hcl   e) Heating of O₂ at high P

*139. Give two methods for preparation of benzene? Explain the following with one example

         i) Halogenation  ii) Friedal crafts a alkylation  iii) Friedal crafts Acylation iv) Nitration

         v) Sulphonation     (Mar, 2004, 2008, 2009, 2010, 2011, 2012, 2013, May, 2009, 2011, 2013)

140. Give two methods for preparation of Acetylene. How does it react with following

    *  a) Ozone * b) Water c) Halogens d)Hydrogen halides f) Acetic acid g) Ammonical Ag(NO₃₎                       and Cu₂Cl₂                                                     (Mar, 2004, 2012, May, 2002) 

SHORT ANSWER QUESTIONS

141. How to prepare Ethane in two methods and Give its chemical properties.

*142. What is substitution reaction? Explain any two substitution reactions of Benzene    

                                                                                                     (Mar, 2007, May, 2008)

*143. Which type of compounds react with Ozone? Explain with one example.

                                                                           (Mar, 2002, 2003, 2004)

*144. What is Geometrical Isomerism? Explain the Geometrical Isomerism of 2- butene

                                                                                                (Mar, 2007, May, 2007)

*145. Define Position and functional Isomerism, Explain with one Example

                                                                                      (Mar, 2005, 2011, 2012, 2013, May, 2010, 2013)

*146.  Complete the following reaction and name the products A, B, C.

                a)   (Mar, 2004, 2005)

               b)           (Mar – 2008)

               c)  (May, 2011)

               d)     (May , 2009)

             e)  (Mar, 2009)

*147. Write the possible conformations of ethane and explain which is more stable (Mar, 2009)

*148. Disucs about the following

              i) Markownikov Rule (May, 2010)     ii) Wurtz reaction (May, 2010, Mar, 2013)

            iii) Anti Markownikov Rule (or)  peroxy effect   (or)  Kharash effect

149. Define isomerism. Explain chian isomerism and metamerism with one example

150. Explain i) Inductive effect  ii) Mesomeric effect  iii) Resononce effect with example.

VERY SHORT ANSWER QUESTIONS.

*151. Nomenclature of Hydrocarbons & some organic compounds.

                                                       (Mar, 2009, 2010, 2011, 2012, 2013, May 2009, 2010, 2013)

152. Explain the following a) Distillation b) Crystallization   c) Sublimation

153. What is product formed when sodium propionate is heated with soda lime.

154. How methyl benzene is prepared from benzene.

155. Write any two functional isomers of C₃H₆O