FAISALABAD BOARD 2017
PAPER CHEMISTRY PART-2
Time: 20 MM.
(Objective Part)
Marks: 17
Note: You have four choice 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.

• Melting points of halogens the group.

(A) Decrease down
(B) Increase down
(C) Remain same throughout
(D) First increase then decrease down

• Which does not belong to alkaline earth metals?

(A) Be
(B) Ra
(C) Ba
(D) Rn

• Boric acid cannot be used:

(A) As antiseptic in medicine
(B) For washing eves
(C) In soda bottles
(D) For enamels and glazes

• The most electronegative element is:

(A) Sb
(B) N
(C) P
(D) As

• Which one is strongest acid:

(A) HCO
(B) HCO₂
(C) HCO₃
(D) HCO₄

• Group VI-B of transition elements contains:

(A) Zn, Cd. Hg
(B) Fe, Ru, Os
(C) Cr, Mo, W
(D) Mn, To, Re

• In tertiary butyl alcohol, the tertiary carbon is bonded to number of hydrogen atoms:

(A) 1
(B) 2
(C) 3
(D) 0

• CH₄+C₂ product is:

(A) Chloroform only
(B) Carbon tetra chloride only
(C) CH₃C+CH₂C₂
(D) Mixture of A, B, C

• Benzene cannot undergo:

(A) Substitution reaction
(B) Addition reaction
(C) Oxidation reaction
(D) Elimination reaffirm

• Which is not a nucleophile?

(A) H₂O
(B) H₂S
(C) BF₃
(D) NH₃

• Ethanol can be converted into Ethanoic acid by:

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

• Acetone with HCN produces cyanohydrin. It is an example of:

(A) Electrophilic addition
(B) Electrophilic substitution
(C) Nucleophile addition
(D) Nucleophile substitution

• Which will produce CO₂ when treated with Na₂CO₃?

(A) CH₂=CH-CH₃
(B) CH₃-CHO
(C) CH₃COOC₂H₅
(D) CH₃-CH₂-COOH

• Solution of which acid is used for seasoning of food:

(A) Formic acid
(B) Botanic acid
(C) Acetic acid
(D) Benzoic acid

• The enzymes bring about the hydrolysis of fats:

(A) Unease
(B) Maltase
(C) Zymase
(D) Lipase

• Nitrogen present in some fertilizers helps plants to:

(A) Fight against disease
(B) Produce fat
(C) Undergo photo synthesis
(D) Produce protein

• Newspaper can be recycled again and again for how many times?

(A) 2
(B) 3
(C) 4
(D) 5

FAISALABAD BOARD 2017
PAPER CHEMISTRY PART-2
Time: 3:10 Hours
(Subjective Part)
Marks: 83
Section-I

2. Attempt any EIGHT short questions.

1. Why the 2^nd electrons affinity values of an element are represented by positive sign?
2. Why the oxidation state of noble gases is usually zero?
3. Why the aqueous solution of Na₂CO₃ is alkaline in nature?
4. How plaster of Paris is formed? Give its two uses.
5. Give four common properties of group IVA elements of periodic table.
6. Why is CO₂ a gas while SiO₂ a solid at room temperature?
7. Why is SO₃ dissolved in H₂SO₄ and not in water?
8. Give four uses of H₂SO₄
9. How galvanizing helps in protecting iron from rust?
10. What is a coordination sphere? Give two examples.
11. What are leachates and what they contain?
12. What is Acid Rain? How it affects our environment?

3. Attempt any EIGHT short questions.

1. Give two reactions for the preparation of XeO₄.
2. What is iodized salt? Give its use.
3. Define Alicyclic compounds with an example.
4. What is catalytic cracking?
5. State Markovnikov's rule with an example.
6. Why alkanes are less reactive?
7. Write the structures of following compounds:
   (a) Biphenyl
   (b) Diphenymethanc
8. What happens when a mixture of benzene vapors and air are passed over V₂O₅?
9. Which method is the most useful for the preparation of alkyl chlorides and why?
10. Give an excellent method for the preparation of simple alkyl iodide.
11. Write the structure of compounds:
    (a) 2-Buten-l-o 
    (b) Tartaric acid
12. How will you distinguish between an alcohol and a phenol?

4. Attempt any SIX short questions.

1. What is Fehling's solution test? Write its chemical equation.
2. Write chemical formulas of hydroxylamine and phenyl hydrazine.
3. What are fatty acids? Give two examples.
4. How are carboxylic acids prepared by the oxidative cleavage of alkenes?
5. Define copolymers and terpolymers.
6. Write structures of epichlorohydrin and diphenylol propane.
7. What are polyamide resins? Give an example.
8. What are micro and macro nutrients for healthy growth of plant?
9. Describe the average composition of Portland cement.

SECTION-II

Attempt any THREE questions.

5. (a) Define hydrides. Classify different types of hydrides with trend in periodic table.
   (b) Write peculiar behavior of Lithium with at least eight points of difference.

6. (a) Describe the preparation of KMnO₄ by electrolytic oxidation process. Also give its uses.
   (b) Explain the process of incineration of industrial and hazardous waste.

7. (a) Define isomerism. Explain geometrical isomerism with examples.\
   (b) What products are formed when the following compounds are treated with ethyl magnesium bromide, followed by hydrolysis in the presence of an acid?
   (i) Formaldehyde
   (ii) CO₂
   (iii) Acetaldehyde
   (iv) Ethyl alcohol

8. (a) Write the reactions of ethene with:
   (i) HOC 
   (ii) dilute KMnO₄
   (iii) Ozone
   (iv) S₂C₂ 
   (b) Write the reactions of ethanol with:
   (i) HCN
   (ii) NaHSO₃
   (iii) H₂NOH
   (iv) H₂NNH₂

9. (a) (i) Write mechanism for acylation of benzene.
   (ii) Write I.U.P.A.C names of the following:
   (b) Write structural formula of:
   (i) Glycerol
   (ii) Carbolic acid
   (iii) Sodium Ethoxide
   (iv) Propoxy propane