Lahore 2017
Chemistry
PART-I
Inter (Part-II) 2017
Group-I
Time: 20 Minutes
(OBJECTIVE TYPE)
PAPER: II
Marks: 17
Note: Four possible answers, A, B, C and D to each question are given. The choice which you think is correct, fill that circle in front of that question with Marker or Pen ink in the answer-book. Cutting or filling two or more circles will result in zero mark in that question.

• Preparation of vegetable ghee involves:

1. Halogenation
2. Hydrogenation
3. Hydroxylation
4. Dehydrogenation

• Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:

1. Eyes
2. Ears
3. Stomach
4. Nose

• Which of the following has the highest boiling point:

1. Methanal
2. Ethanal
3. Propanal
4. 2-Hexanone

• Which of the following does not belong to alkaline earth metals:

1. Be
2. Ra
3. Ba
4. Rn

• Ethers show the phenomenon of:

1. Position isomerism
2. Metamerism
3. Functional group isomerism
4. Cis-trans isomerism

• Grignard reagent is reactive due to:

1. The presence of the halogen atom
2. The presence of Mg atom
3. The polarity of C-Mg bond
4. None of these

• Which of the following element is not present abundantly in earth's crust:

1. Silicon
2. Aluminium
3. Sodium
4. Oxygen

• Phosphorus helps the growth of

1. Root
2. Leave
3. Stem
4. Seed

• Which one of the following nitrogenous base is present in RNA:

1. Cytosine
2. Adenine
3. Thiamine
4. Uracil

• Which catalyst is used in contact process:

1. Fe₂0₃
2. V₂0₅
3. SO₃
4. Ag₂0

• Which of the following is neutral amino acid:

1. Glycine
2. Lysine
3. iodine
4. Glutamic acid 

• Which halogen occurs naturally in a positive oxidation state:

1. Fluorine
2. Chlorine
3. Bromine
4. Iodine

• Which compound is called a universal solvent:

1. H₂O
2. CH₃OH
3. C2H₅OH
4. CH₃ — O — CH₃

• Which of the following ion has maximum hydration energy:

1. Li⁺
2. Na⁺
3. K⁺²
4. Ca⁺²

• Amongst the following, the compound that can be most readily sulphonated:

1. Toluene
2. Benzene
3. Nitrobenzene
4. Chlorobenzene

• Which acid is used in the manufacture of synthetic fibre:

1. Formic acid
2. Oxalic acid
3. Carbonic acid
4. Acetic acid

• Coordination number of pt in [pt Cl(NO₂)(NH)₄] is:

1. 2
2. 4
3. 1
4. 6

CHEMISTRY
PART- 1
Inter (Part-II) 2017
Group-I
(SUBJECTIVE TYPE)
PAPER: II
Marks: 68 Time:2:40 Hours 2.

write short answers to any EIGHT (8) questions:

1. Why the metals are good conductor?
2. What are amphoteric oxides? Give one example.
3. How gypsum is converted into plastic of pairs?
4. Why potassium super oxide is used in breathing equipment’s for mountaineers and in space crafts?
5. Give chemical reactions of orthoboric acid ethyl alcohol and NaOH?
6. What is meant by chemical garden?
7. Why does aqua regia dissolve gold?
8. Give any two properties in which oxygen differs from sulphur.
9. Write note on hydrosphere.
10. Why most of the transition elements from colored compounds?
11. What is role of chlorofluorocarbons in destroying ozone layer?
12. Name four components of environment.

3. Write short answers to any EIGHT (8) questions:

1. Perchloric acid is considered as valuable analytical regent. Why?
2. Why iodine has metallic lusters?
3. Define the following terms , giving one example for each: (a) Position isomerism (b) Metamerism
4. What are alicylcic organic compounds? Give two examples.
5. What is Baeyer’s test?
6. Why alkynes are less reactive than alkenes towards electrophilic reagents?
7. How will you prove that, benzene has cyclic structure?
8. What is general pattern of reactivity of benzene towards electrophile?
9. Define tertiary alkyl halides, give one example.
10. Prepare each of the following compounds from ethyl magnesium
    (a) Propanoic acid
    (b) 1-Propanol
11. Absolute alcohol cannot be prepared by fermentation.
12. How will you distinguish ethanol from methanol?

4. Write short answers to anySix questions:

1. Write four uses of formaldehyde.
2. Convert acetone onto 2-Propanol.
3. Write the formulas of: (a) Glycine(b)
4. What happens when sodium foramte and soda lime is heated?
5. Give four properties of enzymes.
6. Write down the structure formula of cholesterol.
7. Give two differences between fats and oils.
8. Write four qualities of a good fertilizer.
9. What do you mean by setting of cement?

Section-II

Note: attempt any THREE questions

Q.5.(a) Define Mendeleev’s periodic law. Discuss improvement in Mendeleev’s periodic table.
(b) Describe with diagram the manufacture of sodium by Down’s cell.

Q.6.(a) write systematic name of the following complexes
(i) [So(NH₃)₆]CI₃
(ii) Na₃[COF₆]
(iii) [pt(OH)₂(NH₃)₄] So₄
(iv) K₂[pt CI₆]
(b) what is acid rain? How does it affect the environment?

Q.7. (a) Define cracking and explain its type with examples.
(b) Write reactions of the Grignard reagent with the following :
(i) Water
(ii) Ammonia
(iii) CO₂
(iv) Alcohol

Q.8. (a) How will you make the following conversations from an alkane:
(i) 2-Bromopropane
(ii) 2-Bromo-2-methylpropane
(iii) 2-propanol
(iv) Propylene oxide
(b) Define and explain aldol condensation with reaction mechanism. Why formaldehyde does not give this reaction?

Q.9. (a) Explain structure of benzene by atomic orbital treatment.
(b) how does ethyl alcohol react with following reagents: (i) Conc.H₂SO₄ (ii) Na (iii) CH₃COOH (iv) SOCI₂

CHEMISTRY E.U. PART- 1
Inter (Part-II) 2017
Group-II (OBJECTIVE TYPE) PAPER: II
Marks: 17
Chemistry
Time: 20 Minutes
Note: Four possible answers, A, B, C and D to each question are given. The choice which, you think is correct, fill that circle in front of that question with Marker or Pen ink in the answer-book. Cutting or filing two or more circles will result in zero mark in that question.

• Which compound is called universal solvent

1. H₂O
2. CH₃OH
3. C₂H₅OH
4. CH₃ – O-CH₃

• Acetamide is prepared by:

1. Heating ammonium acetate
2. Heating methyl cyanide
3. Heating ethyl acetate
4. The hydrolysis of methyl cyanide

• Which of the following element is not present abundantly in earth's crust:

1. Silicon
2. Aluminium
3. Sodium V
4. Oxygen

• The reaction between fat and NaOH is called:

1. Esterification
2. Saponification
3. Fermentation
4. Hydrogenotysis

• Synthetic rubber is made by polymerization of:

1. Chloroform
2. Acetylene
3. Divinylacetylene
4. Chloroprene

• Phosphorus helps the growth of:

1. Root
2. Leave
3. Seed
4. Stem

• The colour of transition metal complexes is due to

1. d-d transition of electrons 1
2. Ionization
3. Paramagnetic nature
4. Loss of s-electrons

• The oxides of beryllium are:

1. Acidic
2. Basic
3. Amphoteric
4. Neutral

• The carbon atom of a carboxyl group is:

1. Sp hybridized
2. sp² hybridized V
3. sp³ hybridized
4. sp² hybridized toe

• Which acid is used in the manufacture of synthetic fibre:

1. Formic acid
2. Oxalic add
3. Carbonic acid
4. Acetic add

• Benzene cannot undergo:

1. Substitution reaction
2. Addition reaction
3. Elimination reaction
4. Oxidation reaction

• Which of the following element has the highest ionization energy:

1. N
2. P
3. Sb
4. Bi

• Which set of hybrid orbitals has planar triangular shape:

1. dsp²
2. sp³
3. sp
4. sp²

• Chlorine heptaoxide (CI₂0₇) reacts with water to form:

1. Hypochlorous acid
2. Perchloric acid
3. Chloric acid
4. Chlorine and oxygen

• For which mechanism, the first step involved is the same:

1. E₁ and E₂
2. E₂ and S_N2
3. S_n1 and E₂
4. E₁ and S_N1

• The main pollutant of leather tanneries in the waste water is due to the salt of:

1. Lead
2. Copper
3. Chromium (VI)
4. Chromium(III)

• Keeping in view the size of atom, which order is correct one:

1. Mg > Sr
2. Ba > Mt
3. Lu > Ce
4. Cl > I

CHEMISTRY
PART-I
Inter (Part-II)
2017 Group-II
(SUBJEC/TIVE TYPE)
PAPER: II
Marks: 68
Time: 2:40 Hours

2. Write short answers to any EIGHT (8) questions:

1. Hydration energy depends on charge density of ion. Justify the statement.
2. Why anion is bigger in size than its parent atom?
3. Complete and balance the equation:
   (a) LiNO₃+heat
   (b) Mg(No₃)₂+heat
4. Why s-block elements are called as alkali metals and alkaline earth metals?
5. How AI reacts with dilute and conc.H₂SO₄?
6. Justify that solubility of borax changes with change in temperature?
7. Complete and balance the equations:
   (a) FeSO₄(aq)+NO(g)
   (b) NO+CI₂
8. Justify that N₂O is supporter of combustion.
9. Write structure of di-chromate ion Cr₂O₇^-2
10. What do you mean by galvanizing?
11. Write note on hydrosphere.
12. How CO(carbon monoxide) is a poisonous gas?

3. Write short answers to any EIGHT (8) questions:

1. How the halogen acids are ionized in water?
2. What are Freons and Teflon?
3. How does cracking and reforming differ from each other?
4. What is baeyer’s test?
5. Write structural formulas of the following:
   (a) but-1-en-yne
   (b) Vinyl acetylene
6. Give four uses of ethane
7. What happens when a mixture of benzene vapours and air are passed over heated vanadium pentoxide?
8. Write structural formulas of:
   (a) Naphthalene
   (b) Diphenylmethane
9. Define electrophile, give two examples.
10. What is Grignard reagent? What is the cause of its reactivity?
11. Why water has higher boiling point than ethanol?
12. Ethyl alcohol is a liquid wile methyl chloride is a gas. Explain

4. Write short answers to any SIX (6) questions:

1. How will you distinguish chemically between acetaledehyde and benzaldehyde?
2. How will you convert ethanal into propanone?
3. What happens when calcium acetate is heated?
4. How acetic acid is obtained from methyl cyanide?
5. Define homopolymer with an example.
6. What are epoxy resins? How are they prepared?
7. Give two importance of proteins.
8. What type of reactions take place in 1 to 7 days during the setting of cement?
9. What are fertilizers? Why are they needed for plants?

Section-II

Note: Attempt any THREE (3) questions

Q.5 (a) discuss analogy of hydrogen with group IA and VIA elements.
(b) Describe commercial preparation of sodium hydroxide by Nelson cell.

Q.6 (a) describe the open hearth process for the manufacture of steel.
(b) What is smog? Explain the pollutants which are the main cause of photochemical smog.

Q.7 (a) differentiate between homocyclic and heterocyclic compounds with two examples each.
(b) Write reactions of ethyl magnesium bromide with:
(i) Water
(ii) Ammonia
(iii) Ethyl alcohol
(iv) CO₂

Q.8 (a) Give the chemical reactions of ethane with
(i) O₂ in the presence of Ag₂O
(ii) Conc.H₂SO₄
(iii) S₂CI₂ (d) HOCI
(b) give your chemical reactions by which aldehydes andketones can be distinguished from each other.

Q.9 (a) Explain sulphonation of benzene with mechanism.
(b) discuss acidic behavior of phenol. How does phenol react with an alkali to give a salt?