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    Chemistry Part II (1st Half)

    Uploaded by

    Muhammad Qasim
    This document contains a chemistry exam for the F.Sc (Part-II) level in Punjab, Pakistan. The exam contains both objective and subjective questions testing knowledge of chemistry concepts. The objective section contains 17 multiple choice questions testing topics such as ion sizes, metal properties, reaction mechanisms, hybridization states, and elements important for plant growth. The subjective section is divided into two parts, with the first part containing short answer questions testing topics such as electron affinities, hydration energies, reaction types, hydrocarbon properties, and industrial processes. The second part contains longer answer questions choosing from topics like periodic trends, acid-base properties, functional groups, synthesis reactions, and industrial processes like cracking and contact processes.

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    Chemistry Part II (1st Half)

    Uploaded by

    Muhammad Qasim
    743 views4 pages
    This document contains a chemistry exam for the F.Sc (Part-II) level in Punjab, Pakistan. The exam contains both objective and subjective questions testing knowledge of chemistry concepts. The objective section contains 17 multiple choice questions testing topics such as ion sizes, metal properties, reaction mechanisms, hybridization states, and elements important for plant growth. The subjective section is divided into two parts, with the first part containing short answer questions testing topics such as electron affinities, hydration energies, reaction types, hydrocarbon properties, and industrial processes. The second part contains longer answer questions choosing from topics like periodic trends, acid-base properties, functional groups, synthesis reactions, and industrial processes like cracking and contact processes.

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    This document contains a chemistry exam for the F.Sc (Part-II) level in Punjab, Pakistan. The exam contains both objective and subjective questions testing knowledge of chemistry concepts. The objective section contains 17 multiple choice questions testing topics such as ion sizes, metal properties, reaction mechanisms, hybridization states, and elements important for plant growth. The subjective section is divided into two parts, with the first part containing short answer questions testing topics such as electron affinities, hydration energies, reaction types, hydrocarbon properties, and industrial processes. The second part contains longer answer questions choosing from topics like periodic trends, acid-base properties, functional groups, synthesis reactions, and industrial processes like cracking and contact processes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    743 views4 pages

    Chemistry Part II (1st Half)

    Uploaded by

    Muhammad Qasim
    This document contains a chemistry exam for the F.Sc (Part-II) level in Punjab, Pakistan. The exam contains both objective and subjective questions testing knowledge of chemistry concepts. The objective section contains 17 multiple choice questions testing topics such as ion sizes, metal properties, reaction mechanisms, hybridization states, and elements important for plant growth. The subjective section is divided into two parts, with the first part containing short answer questions testing topics such as electron affinities, hydration energies, reaction types, hydrocarbon properties, and industrial processes. The second part contains longer answer questions choosing from topics like periodic trends, acid-base properties, functional groups, synthesis reactions, and industrial processes like cracking and contact processes.

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    Punjab Group of Colleges

    1st Half Book Paper


    F.Sc (Part-II)
    Chemistry
    Time: 20 Min. Objective Max. Marks: 17

    NOTE: You have four choices for each objective type question as A, B, C and D. The choices 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
    of two or more circles will result in zero mark in that question.

    Q. No.1: Choose the correct option. 17


    1. Which is the correct statement?
    (A) Na+ is smaller than Na atom (B) Na+ is larger than Na atom
    (C) Cl– and Cl are equal in size (D) Cl– is smaller than Cl atom
    2. Which statement is incorrect?
    (A) all the metals are good conductors of electricity
    (B) all the metals are good conductors of heat
    (C) all the metals form positive ions (D) all the metals form acidic oxides
    3. Down’s cell is used to prepare:
    (A) Sodium carbonate (B) Sodium bicarbonate
    (C) Sodium metal (D) Sodium hydroxide
    4. Which element is deposited at the cathode during electrolysis of brine in diaphragm cell?
    (A) H2 (B) Na (C) Cl2 (D) O2
    5. Among group VA elements, the most electronegative element is:
    (A) Sb (B) N (C) P (D) As
    6. Oxidation of NO in air produces:
    (A) N2O (B) N2O3 (C) N2O4 (D) N2O5
    7. The state of hybridization of carbon atom in methane is:
    (A) sp3 (B) sp2 (C) sp (D) dsp2
    8. The chemist who synthesized urea from ammonium cyanate was:
    (A) Berzelius (B) Kolbe (C) Wholer (D) Lavoisier
    9. Preparation of vegetable ghee involves:
    (A) Halogenation (B) Hydrogenation (C) Hydroxylation (D) Dehydrogenation
    10. Which one of the following gases is used for artificial ripening of fruits?
    (A) Ethene (B) Ethyne (C) Methane (D) Propane
    11. The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule:
    (A) Hund’s rule (B) Markownikov’s rule
    (C) Pauli’s Exclusion Principle (D) Aufbau Principle
    12. For which mechanisms, the first step involved is the same?
    (A) E1 and E2 (B) E2 and SN2 (C) SN1 and E2 (D) E1 and SN1
    13. Grignard reagent is reactive due to:
    (A) the presence of halogen atom (B) the presence of Mg atom
    (C) the polarity of C -Mg bond (D) none of the above
    14. Which of the following will have the highest boiling point?
    (A) Mathanal (B) Ethanal (C) Propanal (D) 2-Hexanone
    15. Cannizzaro’s reaction is not given by:
    (A) Formaldehyde (B) Acetaldehyde (C) Benzaldehyde (D) Trimethylacetaldehyde
    16. Which three elements are needed for the healthy growth of plants?
    (A) N, S, P (B) N, Ca, P (C) N, P, K (D) N ,K,C
    17. Which is not a calcarious material?
    (A) lime (B) clay (C) marble (D) marine shell
    Punjab Group of Colleges
    1st Half Book Paper
    F.Sc (Part-II)
    Chemistry
    Time: 2:40 Hours Subjective Max. Marks: 68

    SECTION – I

    Q. No.2: Write short answers to any EIGHT (8) questions. (8×2=16)


    i. Why the second value of electron affinity of an element is usually shown with a positive sign?
    ii. The hydration energies of the ions are in the following order: Al+3 > Mg+2 > Na+1
    iii. How ZnO behave as Amphoteric oxide?
    iv. How cationic size is always smaller than its parent atoms?
    v. What is laughing gas? How it is prepared?
    vi. What is chemistry of Ring test for confirmation of nitrate?
    vii. How P2O5 behave as dehydrating agent?
    viii. What is carbonization?
    ix. Give methods for the improvement of octane no.
    x. Differentiate between Metamerism and Tautomerism?
    xi. How ethanal is converted into Lactic Acid?
    xii. Give the chemistry of silver mirror test.
    Q. No.3: Write short answers to any EIGHT (8) questions. (8×2=16)
    i. How acetaldelyde is converted into Acetal and vice versa?
    ii. Differentiate between Acyclic and Alicyclic hydrocarbons?
    iii. Differentiate between 2-pentanone and 3-pentanone by iodoform test?
    iv. How pair of carboxylic acids are prepared from ketone?
    v. How the boiling point of straight chain hydrocarbon is greater than Branched chain
    hydrocarbon?
    vi. What is Mustard gas? How it is prepared?
    vii. Give the catalytic oxidation of methane?
    viii. What is Aromatization? Give equation
    ix. How acetylene is converted into neoprene?
    x. Differentiate between Electrophile and Nucleophile?
    xi. Why we use dry ether in Grignard's reactions?
    xii. What is Wurtz synthesis for the preparation of alkane?
    Q. No.4: Write short answers to any SIX (6) questions. (6×2=12)
    i. How Anti-knocking agent is prepared?
    ii. Why 2% Gypsum is added to cement?
    iii. Why lime water turns milky with CO2 but become clear with excess of CO2?
    iv. Differentiate Micro and Macro nutrients.
    v. Why NH4NO3 fertilizer is not fit for paddy rice?
    vi. Give woody and non-woody raw material for paper manufacturing.
    vii. Write down the essential qualities of good fertilizer.
    viii. Why KO2 is prefer by mountaineers for breathing?
    ix. How Gypsum is converted into Plaster of Paris?
    SECTION – II

    Note: Attempt any THREE (3) questions: (8×3=24)

    Q. No. 5: (a) Discuss the position of hydrogen in periodic table with group I-A, IV-A and VII-A ? (4)
    (b) How sulphuric acid prepared by contact process? (4)
    Q. No. 6: (a) What is Cracking? Give its classification? (4)
    (b) What is Aldol condensation reaction? Give its mechanism. Which type of aldehyde and
    Ketone give this reaction. (4)
    Q. No. 7: (a) Give the acidic nature of alkyne. (4)
    (b) Write a detail note on SN1 reaction. (4)
    Q. No. 8: (a) Define ionization energy. Give its periodicity? (4)
    (b) Write a detail note on Cannizzaro’s reaction. (4)
    Q. No. 9: (a) Define functional group. Give oxygen containing examples? (4)
    (b) What is Grignard’s reagent. Give the preparation of Po, So and To alcohol from
    Grignard’s reagent? (4)

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