Inter (Part-II) Bahawalpur Board 2015
Chemistry
Part II (Objective Type)
Time Allowed: 20 Minutes 
Max. Marks: 17

Note: You have four choices for each objective type question as A, B, C and D. The choice which you think 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
Circle the correct option i.e. A/B/C/D. Each part carries one mark.

• The chief ore of Aluminium is :

(A) NA₃ALF₆
(B) AL₂O₃.2H₂O
(C) Al₂O₃  
(D) AL₂O₃.H₂O

(A) NA⁺
(B) Cs²⁺
(C) Ba²⁺
(D) Mg²⁺

• The concept of Atomic Number was introduced by

(A) Arazi
(B) Mendeleeve
(C) Moseley
(D) Dobereiner

• Laughing Gas is chemically :

(A) NO
(B) N₂O
(C) NO₂  
(D) N₂O₄

• The bond angle between any two Sp² – Hybridized orbitals is of :

(A) 180⁰
(B) 109.5⁰
(C) 120⁰
(D) 107.5⁰

• The total number of transition elements is :

(A) 10
(B) 14
(C) 40
(D) 58

• Hydrogen bond is the strongest between the molecules of:

(A) HF
(B) HCI
(C)HBr
(D) HI

• Formula of Chloroform is :

(A) CH₃CL
(B)CSL₄
(C)CH₂CL₂  
(D) CHCL₃

• Ethanol can be converted into Ethanoic Acid by:

(A) Hydrogenation
(B) Hydration
(C) Oxidation
(D) Fermentation

• Which of the given is not a Nucleophile:

(A) H₂O
(B) H₂S
(C) BF₃  
(D) NH₃

• The conversion of n-hexane into benzene by heating in the presence of Pt is called:

(A) Isomerization
(B) Aromatization
(C) Dealkylation
(D) Rearrangement

• Which of the following will have the highest boiling point:

(A) Methanol
(B) Ethanol
(C)Propanal
(D) 2- Hexanone

• The reaction between fat and NaOH is called:

(A) Esterification
(B) Hydrogenolysis
(C) Fermentation
(D) Saponification

• Thickness of atmosphere is about how much kilometer above the surface of earth:

(A) 100 Km
(B) 1000 Km
(C)10,000 Km
(D) Unlimited

• Cannizzaro’s reaction is given by:

(A) Acetaldehyde
(B) Formaldehyde
(C) Acetone
(D) Methyl Alcohol

• Ammonium Nitrate fertilizer is not used dor which crop:

(A) Cotton
(B) Wheat
(C) Sugarcane
(D) Paddy Rice

• Which reagent is used to reduce a Carboxylic Group to an Alcohol:

(A) H₂O/Ni
(B) H₂/Pt
(C) NaBH₄  
(D) LiAlH₄

Inter (Part-II) Bahawalpur Board 2015
Chemistry
Part II (Subjective)
Time Allowed: 3.10 Hours 
Max. Marks: 83

Section I

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 (03) parts from Part – III (Practical Part).Write same questions no. and its Part no. as given in the question paper. 22x2=44

Make diagram where necessary. PART I

Question #2

• How does Iodinization Energy vary across a period ?
• Write the Mechanism of reaction between Acetic Acid and Ammonia?
• Write the major steps involved in the synthesis of Urea Fertilizer.
• What is Paper? Name two methods for Pulp Preparation.
• What are Essential and Non essential Amino Acids?
• Why 1 – Butene do not show Cis –trans isomerism?
• Define Electrophile and Nucleophile.
• Write four differences of Oxygen and Sulphur.
• Explain Steam Cracking?
• Define Hydration Energy with an example.
• Write the properties of White Phosphorous.
• Convert Ethyl Bromide into : (a) n-Butane (b) Ethene

Question #3

• Why Fluorine show peculiar behaviour? Give four reasons.
• Give reactions of HCN and NH3 with CH ≡ CH. Also mention reaction condition.
• What happen when Alkenes are treated with cold concentrated sulphuric acid? Also boil the product with water.
• What happen when Ethyl Alcohol react with Thionyl Chloride and Ammonia? Also mention reaction conditions.
• What is Smog? Give necessary conditions for the formation of Smog.
• What are Primary Pollutants? Give examples.
• Give uses of Ne and Rn.(two uses in each case.)
• Draw Cyclic Structure of Glucose and Fructose.
• What is Bakellite? How it is prepared.
• What is the role of Lime in Agriculture?
• How lime and sand are used to make glass?
• Define the terms Sponification Number and Iodine Number.

Question #4

• What are Typical and Non-typical transition elements?
• How will you prepare m- chloronitrobenzene from Benzene in two steps?
• Explain coordination number and coordination sphere.
• What happen when AI is dissolved in NaOH?
• What happen when Boric Acid heated?
• How Aromatic Hydrocarbons are classified?
• Give four uses of Acetaldehyde.
• How formaldehyde is prepared in laboratory?
• How Ethanol is converted to propanone?

Part - II

Question #5
(a) Give the formulae of Sylvite,Borax,Troana,Natron,Dolmite,Alunite,Asbestos and Barite. (4)
(b) Convert (i) Methane to Ethane.(ii) Ethane to Methane (4)

Question #6
(a) Write chemical reactions of H₃BO₃. (4)
(b) Write the mechanism of Nitration and Alkylation of Benzene. (4)

Question #7
(a) Explain the Brikeland and Eyde’s process for the manufacture of Nitric Acid. (4)
(b) Explain briefly mechanism of β – Elimination reactions. (4)

Question #8
(a) Explain Beckmann’s method for preparation of Bleaching Powder. (4)
(b) Write rite a note on Acidic Behaviour of Phenol. (4)

Question #9
(a) What is Orbital Hybridization? Explain Sp² Hybridization with the formation of CH₂=CH₂ (4)
(b) How does Acetaldehyde react with following reagents? (i) HCN (ii)NaHSO₄  (iii) dil NaOH (iv) NaBH₄/H₂O (4)

Part-III (Practical Part)

Question #10
(A) Write the qualitative analysis of “ AL⁺³” in a systematic manner. (5)
(B) Write the qualitative analysis of “ Ca⁺²” in a systematic manner. (5)
(C) (i)Write the qualitative analysis of “ Br^-1” in a systematic manner. (5)
(D) How will you detect N, X in an organic compound? (5)
(E) Write the material required ,equation and procedure for preparation of (5)