Chemistry
Paper II (Objective Type)
L.K.No. 910
Inter (Part –II)
Paper Code No.8483
New Marks Scheme
Marks : 17
Time : 20 Minutes
Note : Four possible choices A,B,C,D to each question are given. Which choice is correct, fill that circle in front of that question number.Use marker or pen to fill the circles.Cutting or filling two or more circles will result in zero mark in that question.

Question#1

• Newspaper can be recycled again and again for how many times:
  
  (A) 5
  (B) 4
  (C) 3
  (D) 2
  
  
• The word paper is derived from the name of which reedy plant:
  
  (A) Rose
  (B) Sun Flower
  (C) Papyrus
  (D) Water Hyacinth
  
  
• Which of the following is an addition polymer :
  
  (A) Nylon -6,6
  (B) Polystyrene
  (C) Terylene
  (D) Epoxy Resin
  
  
• The flavour of Amyl Acetate is :
  
  (A) Orange
  (B) Apricot
  (C) Banana
  (D) Pine apple
  
  
• Silver Mirror Test is given by :
  
  (A) Ethers
  (B) Ketones
  (C) Acids
  (D) Aldehydes
  
  
• Which Enzyme is not involved in fermentation of Starch:
  
  (A) Zymase
  (B) Urease
  (C) Diastase
  (D) Invertase
  
  
• Which of the following is not a Nucleophile:
  
  (A) H₂S
  (B) BF₃
  (C) H₂0
  (D) NH₃
  
  
• The Electrophile in Aromatic sulphonation is :
  
  (A) H₂SO₄
  (B) HSO₄^-
  (C) SO₃
  (D) SO₃⁺
  
  
• Vinyl Acetylene combines with HCI to form:
  
  (A) Polyacetylene
  (B) Benzene
  (C) Chloroprene
  (D) Divinyl Acetylene
  
  
• Tautomerism arises due to shifting of :
  
  (A) Sigma Electrons
  (B) Neutron
  (C) Pi-Electrons
  (D) Proton
  
  
• The colour of transition metal complexes is due to :
  
  (A) Lose of S-Electrons
  (B) Ionization
  (C) Paramagnetic Nature of Transition Elements
  (D) d-d transition of electrons
  
  
• Which is the strongest acid :
  
  (A) HCIO
  (B) HCIO₂
  (C) HCIO₃
  (D) HCIO₄
  
  
• Laughting Gas is Chemically :
  
  (A) NO
  (B) N₂O
  (C) NO₂
  (D) N₂O₄
  
  
• Boric acid can not be used :
  
  (A) As Antiseptic in Medicines
  (B) For Washing Eyes
  (C) In Soda Bottles
  (D) For Enamals and Glazes
  
  
• The milk of magnesia is used for the treatment of :
  
  (A) Basicity
  (B) Rancidity
  (C) Acidity
  (D) Jaundance
  
  
• Elements of Group II- A are called:
  
  (A) Coinage Metals
  (B) Alkali Metals
  (C) Metalloids
  (D) Alkaline Earth Metals.
  
  
• Which one is the amphoteric Oxide :
  
  (A) SO₃
  (B) CaO
  (C) ZnO
  (D) Li₂O

New Marks Scheme
Inter (Part II)
Time allowed: 3:10 Hours
Session (2012-14)
Marks : 83
Note: it is compulsory to attempt (8-8) parts each from Q.No.2 and Q.No.3 while attempt any (6) parts from Q .No.4 and attempt any (03) questions from part II. While attempt any three parts from Part – III (Practical Part).Write same questions no. and its part no. as given in the question paper. (22x2=44)
PART I

Question#2

• What is meant by Shielding Effect?
• What are S-Block Elements?
• Why Group II – A elements are called Alkaline Earth Metals?
• What is the reaction of NaCL with conc,H₂SO₄?
• What is Tale or Soapstone? Give it uses?
• What are Freon? Give their uses.
• How semi conductors are used in Transistors?
• How does no act as an oxidizing agent?
• Why Nitrogen is Chemically inert at room temperature?
• Give the reactions of HNO₃ with Carbon and Sulphur?
• What happens when bleaching powder reacts with dil.H₂SO₄ and NH₃ separately?
• What happens when Borax is heated with Nh₄CL?

Question#2

• What is meant by Coordination Sphere? Give one example.
• How Octane Number of Gasoline is improved by reforming process?
• What are Allcyclic Compounds? Give an example.
• What is Wrought iron? Give its composition?
• Give four uses of Ethyne.
• How Ethene can be converted into Polyethylene?
• Give four uses of Formaldehyde.
• How Acetone is Oxidized with K₂Cr₂O₇/H₂SO₄?
• How Polystyrene is prepared? Give its uses.
• Define Disaccharides? Give an example.
• Justify that Cannizzaro’s reaction is self oxidation reduction reaction.
• What is meant by Saponification Number? Give an example.

Question#4

• How Acetophenone can be obtained from Benzene?
• What are β Elimination Reactions?
• How Secondary and Tertiary Alcohols can be distinguished by Lucas Test?
• Name the components of the environment. What are the substances present in atmosphere?
• Just write five stages involved in the manufacturing of Portland Cement.
• What are the essential qualities of good fertilizer?
• What is Smog?What are the contents of Photochemical Smog?
• What are Micronutrients and Macronutrients?
• How Picric Acid is prepared?

Part - II

Question#5
(a) Discuss the position of Hydrogen over IA – Group Elements. (4)
(b) Write the role of Gypsum in Agriculture. (4)

Question#6
(a) Explain the structure of Ethene on the basis of Sp² Hybridization. (4)
(b) Differentiate between S_N1 and S_N2 Reactions. (4)

Question#7
(a) Bring the following conversions: (4)
(i) Ethene into Mustard Gas
(ii) Ethyne into Methyl Nitrile.
(iii) Methane into Nitromethane.
(b) Give any four uses of Acetic Acid. (4)

Question#8
(a) Describe the structure of Benzene on basis of Atomic Orbital Treatment. (4)
(b) Write structural formulae of the followings: (4)
(i) Tartaric acid
(ii) Isopropyl Alcohol
(iii) Lactic Acid
(iv) 2- Pentanol

Question#9
(a) Discuss the following properties of Transition Elements in detail: (4)
(i) Paramagnetism
(ii) Oxidation State
(b) Describe the role of Chloroflurocarbon in Destroying Ozone. (4)

Part –III (Practical Part)

Question#10

(A) (i) Write down any two confirmatory tests for Br^- (3)
(ii) Describe Chromyl Chloride Test. (2)
(B) (i) Write down any two confirmatory Tests for Cr³⁺ (3)
(ii) Name four radicals indicated by Flame Test. (2)
(C) (i) Write down two confirmatory Tests for Zn²⁺ (3)
(ii) Describe Charcoal Cavity Test. (2)
(D) Write down material required equation and procedure for preparation of Iodoform. (5)
(E) How will you identify and confirm Carboxylic Group in an Organic Compound. 2+3=(5)