FAISALABAD BOARD 2014
PAPER CHEMISTRY
PART-II
Time: 20 Min.
(Objective Part)
Marks: 17
Note: You have four choice for each objective type question as A,B,Cand D. The choice which you think is correct; fill that circlefront 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.

• The electrophile in aromatic sulphonation is:
  

(a) H₂SO₄                               
(b) HSO^-4
(c) SO₃                       
(d)  SO⁺³

• Which compound is formed, when CH₃OH  reacts with CH₃MgBr?

(a) Ethane                            
(b) Methane
(c) Ethanol                           
(d) Acetone

• Which comound will have the maximum repulsion with water?

(a) C₆H₆                                
(b) C₂H₅OH
(c) C₃H₇OH                        
(d) CH₃OCH₃

• Formalin is a 40% solution of:

(a) CH₃CHO                          
(b) CH₃OH
(c) HCHO       .                     
(d) CH₃OCH₃

• Organic compounds having fruity smell are:

(a) Carboxylic acid             
(b) Alcohols
(c) Ethers                            
(d) Esters

• Which polymer is an addition polymer?

(a) Nylon 6,6                  
(b) Polystyrene
(c) Terylene                    
(d) Eposyresin

• Macronutrient for soil is:

(a) N₂                              
(b) Cu
(c) Zn  .                          
(d) Fe

• Ecosystem is a smaller unit of:

(a) Lithosphere                                   
(b) Hydrosphere
(c) Atmosphere                                  
(d) Biosphere

• In periodic table all the non-metals are placed under which of the,blocks?
  

(a) f                                             
(b) d
(c) p                                           
(d) s

• Elements of group IIA are called:
  

(a) Alkali metals         
(b) Alkaline earth metals
(c) Coinage metals     
(d) Halogens

• Which element is deposited at the cathode during the electrolysis of brine in diaphragm cell?
  

(a) H₂                                       
(b) Na
(c) Si                                       
(d) O₂

• Tincal is a mineral of:
  

(a) Al                                              
(b) C
(c) Si                                             
(d) B

• Laughing gas is chemically:
  

(a) NO                                           
(b) N₂O
(c) NO₂                                          
(d) N₂O4

• Hydrogen bond is the strongest between the molecules of:
  

(a) HF                                         
(b) HCI
(c) HBr                                       
(d) HI

• Which is a non-tyical transition elemnt?

(a) Cr                                     
(b) Mn
(c) Zn                                     
(d) Fe

• The chemist who synthesized erea from ammonium cyanate is:

(a) Berzeljus   
(b) Kolbe
(c) Wholer      
(d) Lavoisier

• Formula of chloroform is:
  

(a) CH₃Cl       
(b) CaC1₂
(c) CH₂Cl₂     
(d) CHCI₃

FAISALABAD BOARD 2014
PAPER CHEMISTRY
PART-11
Time: 3:10 Hour
(Subjective Part)
Marks: 83

                              Section II
Atternpt any EIGHT shoo questions. (8 x 2 = 16) .   .

• Na₂O is basic While P₂O₅  is acid  in character. Justify.
  
• Diamond is a non-conductor but graphite is good conductor Why?
  
• Why lime water turn milk with CO₂ but become clear with excess of CO₂?
  
• Write four uses of sodium silicate.
  
• Liquid silicones are perfected over ordinary organic lubricants. Why'?
  
• In what respects, carbon behaves differently from other members of group IV-A?
  
• How does dil. HNO₃ react with? (a) Cu (b) Mn
• Justify that P₂O₅ is a powerful dehydrating agent. Give two reactions.
• Why is SO₃ dissolved in H₂SO₄ but not in H₂O in contact process?
• Write four uses of noble gases.
  
• Why iodine has metallic luster?
  
• What happens when bleaching powder reaction with?
  (a) dil. H₂SO₄                        
  (b) NH₃
  

3. Attempt any EIGHT short questions. (8 x 2 = 16)

• What is paramagnetism and diamagnetism?
  
• How do transition elements display colour?
  
• Name different fractions obtained in petroleum refining.
  
• What are amines and imines? Give one example of each.
  
• Which compounds-are reduced in Clemmensen and Wolf-Kishner's reduction?
  
• Why does alkane show least reactivity?
  
• Write composition of Toll en’s reagent and which organic compounds are usually identified by it?
• Mention the name and composition of mixture used as throat lozenges.
  
• How is ethyne converted into ethanol?
  
• What is major difference between thermoplastic and thermosetting polymer'?
  
• What are carbohydrates? Give one example,
  
• Mention the main reasons of rancidity of oil.
  

4. Attempt any SIX short questions. (6 x = 12)

• what  are polycyclic aromatic hydrocarbon? Give two examples
• Why are alkyl halides more reactive than alkanes?
• Prepare bakelite from phenol.
• Write down reactions of diethyl ether with HI and PCI₅.
• Ammonium nitrate is a useful fertilizer for many crops except paddy rice
  
• Write names of four non woody raw materials for the production of paper and pulp.
  
• What are fertilizers? why are they needed?
  
• Name four components of environment.
  
• Explain the term BOD.

SECTION III

Attempt any THREE questions. (8 x 3 = 24)

5.(a) what are hydrides? Classify them on the basis of nature of bonding. Explain only ionic hydride in detail.
(b) Describe commercial preparation of sodium hydroxide by diaphragm cell.

6.(a) What is orbital hybridization? Explain sp-hybridization of carbon.
(b) What products are formed when Grignard reagent react with?
(i)Alcohol (ii) Formaldehyde (iii) Water           

7.(a)(i) How alkenes and alkynes can be prepared from vicinal dihalides?
(ii)How the presence of double bond is detected by using Baeyers reagent.
(b)(i) Define amino acids. What is the difference between protein and polypeptide?.
(ii) What is Zwitter ion?

8.(a) Write the mechanism of halogenations of benzene.
(b)  Write the reactions of ethyl alcohol with:
(i)Na metal
(ii)SOCl₂  
(iii) NH₃
(iv) K₂Cr₂O₇ / H₂SO₄

9.(a) How steel can be manufactured by Bessemer's process?
(b)  Explain how pesticides are dangerous to human beings?

SECTION IV

10.Attempt ally THREE questions. (5x 3 = 15)

(a) Write down two confirmatory tests for chloride radical.
(b) (i) Write down two confirmatory test for Fe radical.
(ii) How 00 filter ash test can be done?
(c)(i) Write  down two confirmatory tests for CO²⁺
(ii) How will you perform charcoal cavity test?
(d) Write down material required, chemical equation and procedure for the preparation of Aspirin.
(e) Identify. aldehydic group in the given organic compound. Give its two confirmatory test.