Inter Part-II Gujranwala
Chemistry Board 2016
Paper: II
Time: 20 minutes
OBJECTIVE
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 fiffing two or more circles will result in zero mark in that question. Attempt as many questions as given in objective type question paper and leave others blank.

• Which of the following compounds will not give iodo form test on treatment with 12/NaOH.

(A) acelbaldell-iycle
(B) acetone
(C) butanone
(D) a-pentanone

• Whaich catalyst is used in contact process?

(A) Fe₂O₃
(B) V₂O₅
(C) SO₃
(D) Ag₂O

• Vinyl Acetylene combines with HCI to form.:

(A) polyacetylene
(B) benzene
(C) chloroprene
(D) divinyl aoetylene

• Vegetable oils are:

(A) unsaturated fatty acids
(B) glyc-erides of unsaturated fatty acids
(C) glycerides of saturated fatty acids
(D) essential oils obtained from plants

• Ecosystem is a smaller unit of:

(A) lithosphere
(B) hydrosphere
(C) atmosphere
( D) biosphere

• The word paper is cleaved from the name of which reedy plant?

(A) rose
(B) SLIn flower
(C) papyrus
(D) water hyacinth

• Which compound is called a universal solvent?

(A) H₂O
(B) CH₃OH
(C) C₂H₅OH
(D) CH₃-O- CH₃

• To avoid the formation of toxic compounds with chlorine which substance is used for disinfecting water?

(A) KMnO₄
(B) O₃
(C) alums
(D) chloramines

• Which reagent is used to reduce a carboxylic groups to an alcohol?

(A) H₂/Ni
(B) H₂/Pt
(C) NaBH₄
(D) LiAIH₄

• A double bond consists of:

(A) two sigma bonds
(B) one sigma and one Pi bond
(C) one sigma and two Pi bonds
(D) two Pi bonds

• Tincal is a mineral of:

(A) Al
(B) B
(C) Si
(D) C

• Benzene cannot undergo:

(A) substitution reactions
(B) addition reactions
(C) oxidation reactions
(D) elimination reactions

• Chile saltpetre has the chemical formula:

(A) NaNO₃
(B) KNO₂
(C) Na₂B₄O₇
(D) Na₂CO₃

• The anhydride of HC1O4 is:

(A) CIO₃
(B) CIO₂
(C) CI₂O₅
(D) CI₂O₇

• 6th period contains the number of elements-.

(A) 18
(B) 32
(C) 8
(D) 10

• The strength of binding energy of transition elements depends upon:

(A) number of electron pairs
(B) number of unpaired electrons
(C) number of neutrons
(D) number of protons

• Elimination bimolecular reactions involve:

(A) first order kinetics
(B) second order kinetic
(C) third order kinetics
(D) zero order kinetics

Inter Part-11 Gujranwata
Paper: I
Board 2016
Time: 3:10 Hours
SUBJECTIVE
Marks: 83

(SECTION - I)

2. Write short answers to any EIGHT questions: (2x8-16)

• Just] y that ZnO is amphitricha in nature.
• How electron affinity values vary in periodic table?
• Why Urine water turns milky with CO₂, but becomes clear with excess CO₂?
• Give reason that alkali. metals are strong reducing
• Why are liquid silicones preferred over ordinary organic lubricants?
• Discuss the effect of temperature on semiconductor.
• Prove that H₂SO₄ acts as an oxidizing agent.
• How does P₂O₅ react with water in cold and hot state?
• Due to which reasons fluorine shows peculiar behavior from other family members
• Write any two applications of Helium.
• Give the reason for the development of the colors in the compounds of transition elements.
• How the entrapped gases are removed from steel

3. Write short answer to any EIGHT questions:(2x8 16)

• Classify open chair cornpones with examples.
• Define catenation.
• Is Baeyer'S Reagent? Explain with an example
• Describe polymerization of ethane-
• Write down mechanism of nitration of benzene.
• What information are obtained about structure of benzene from x-ray studies
• Write down common names of following compounds:

• Describe two methods of preparation of ethyl halide from ethanol.
• Describe Williamsons method for preparation of ethers_
• Write formula of carbolic acid and its one use.
• Describe natural sources of methane {Hydrocarbon) in atmosphere.
• Write chemical reactions of chlorofluorocarbon responsible for depletion of ozone layer.

4. Write short answers to any SIX questions: (2x6-12)

• Convert acetone into t-butyl alcohol.
• How will you distinguish between methanol and ethanal
• Convert acetic acid into acetamide.
• Write down mechanism of reaction between acetic acid and ethanol.
• What is additional polymerization? Give example
• What is chemical nature of enzyme? Glassily them.
• Explain the term micro nutrients.
• Write four essential qualities of a good fertilizer.
• Discuss epoxy resins,

(SECTION –II)

5. (a) Define hydration energy. Discuss the relation of hydration energy with size and charge on the ion (4)

(b) Give four applications of lime in agriculture and four applications in industry (4)

6. (a) Write two preparation. and two chemical reactions of Borax. (4)

(b) Write chemical reactions of fluorides of xenon (4)

7. (a) Define isomerism explain position and functional group isomerism with or one example. (4)

(b).Write the chemical reactions of Grignards reagents
C21r1.5MgBr with followings: (4)
(i) CICN
(ii) C2H50H
(iii) CO2
(iv) CH3- CHO

8. (a) How will you convert ethane into: (4)
   (i) Ethyl alcohol
   (ii) Ethylene epoxide
   (iii) Ethylene glycol
   (iv) Ethylene chlorohydrins

(b) Explain with mechanism Cannizzaro's reaction. (4)

9. (a) Explain classification of aromatic hydrocarbons on the basis of number of rings. (4)

(b) Describe any four chemical reactions of carbolic acid (4)

(SECTION - Ill Practical)

10. (i) Write complete qualitative analysis of AI^-3radical in a systematic manner. (5)

(ii) Write complete analysis of Z²⁺ radical in a systemic mariner.

(iii) Write complete qualitative analysis of NO₃^-1 radical in a systematic manner (5)

(iv) How will you identify and confirm phenolic functional group in an organic compound?

(v) Write the material required. equation and procedure for preparation of iodoform. (5)