P R O F E S S O R S A C A D E M Y
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 2F.SC – Part I Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)
Statements A B C D For a good separation, the two liquids
are gently shaken to increase their area of
Miscibility Separation Contact Solubility
Several types of filter media are used for filtration depending on the
Nature of reactants
Nature of reaction
Nature of precipitate
Nature of filter paper
The ratio of solute in organic phase to that in aqueous phase is called
Equilibrium
coefficient
Equilibrium constant
General constant
Distribution
coefficient
The solid which is left over the filter paper is called
Mother liquor
Crystals Residue Mud
Crystallization does not involve Heating Sublimation Vaporization
Cooling
In solvent extraction, ether is used to separate products of organic synthesis from
Ethyl alcohol water CCl4 CHCl3
At constant pressure qp is equal to ∆H ∆E ∆P ∆S The enthalpy change when 1mole of
gaseous atoms are formed from its element is called enthalpy of
Formation Combustion Atomization Solution
Which of the following is not a state function
Pressure Heat Temperature
Volume
Mathematical form of first law of thermodynamics is
∆E = Q + W
∆H = ∆E+P∆V
Q = ∆E + ∆H
H = E + PV
When enthalpy of reactants is higher than products the reaction will be
Endothermic Exothermic
Spontaneous
Non Spontane
ous
Hess’s law is based uponLaw of
conservation of mass
First law of thermodyna
mics
Second law of
thermodynamics
Borne Haber cycle
SUBJECTIVE (Chapter # 2, 7)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. Why ∆H ≈ ∆E in case of solids and liquids?ii. Differentiate b/w enthalpy and internal energy.iii. Define standard enthalpy of solution.iv. Differentiate b/w stationary and mobile phase.v. Define state function.vi. What is specific heat?vii. What is Rf value? How it control distribution of solute?
viii. Why enthalpy of neutralization of strong acids and strong base solutions is same?ix. How crude crystals can be decolourized?x. Define sublimation.
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P R O F E S S O R S A C A D E M Yxi. State law of distribution.xii. What conditions are required for smooth filtration?xiii.
Give the extensive answers of the following questions.
QUESTION # 3. (a) Explain solvent extraction with respect to ether extraction. (4)(b) How crystals are collected and dried? (4)
QUESTION # 4. (a) Explain paper chromatography. (4) (b) What is Borne Haber cycle? (4)
QUESTION # 5. Explain first law of thermodynamics. (8)
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 8F.SC – Part I Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
i. The process in which ionic compounds when dissolved in water dissociate into opposite charged ions called
Hydration Hydrolysis Ionization Association
ii. Cu metal can be purified in electrolytic cell by making impure Cu
Anode Cathode Electrolyte Salt
bridge
iii. The electrode through which electrons entered the solution
Cathode Anode From both None
iv.In which compound Oxidation state of Mn is +6
KMnO4 MnO2 K2MnO4 MnO
v. When Pb accumulator is discharged the density of H2SO4
1.25gcm-3 1.15gcm-3 1.25g/dm-3 1.15gdm-3
vi.Which of the following is best reducing agent
vii. In the reaction 2Fe+3Cl22FeCl3
Fe is reduced
Fe is Oxidized
Cl2 is Oxidized
None
viii. The lowest reduction potential in electrochemical series
Na F2 H2 Li
ix.The Oxidation no. of Oxygen in OF2 +2 -2 +1 -1
x. In electrolysis reaction take place at anode is
Addition Oxidation Decomposition
Reduction
xi.Stronger the Oxidizing agent, greater is the
Oxidation potential
Reduction potential
Redox potential
E.M.F of cell
xii. Fuels cells are means by which chemical energy may be converted
Heat energy
Magnetic energy
Sound energy
Electric energy
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P R O F E S S O R S A C A D E M Yinto
SUBJECTIVE (Chapter # 10)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. How Al is anodized in electrochemical cell?ii. What is difference b/w cell and battery?iii. Give a brief description of voltaic cell.iv. A salt bridge is not required lead storage battery, why?v. What is standard Hydrogen electrode?vi. What is electrolyte cell?vii.Write down reactions in alkaline battery.
viii. What is electromotive force?ix. What are spectator ions?x. Give electrolysis of aqueous NaNO3 solution.xi. How NaOH prepared by Nelson cell?xii.In molten salts electrolysis products are predictable while in electrolysis of aqueous
salts products are unpredictable, why?xiii.
Give the extensive answers of the following questions.
QUESTION # 3. (a) What are electrochemical series? Give any three applications. (4)
(b) Balance following two equations by ion electron method. (4)
i) MnO4-1 + C2O4
-2 + H2O MnO2 + CO2 +OH- (Basic reaction)
ii) MnO4-1 + 2Cl- Mn+2 + Cl2 (acidic reaction)
QUESTION # 4. (a) Explain salt bridge and give its applications. (4) (b) Explain lead accumulator. (4)
QUESTION # 5. (a) What are difference b/w primary cells, secondary cells and metallic conduction, electrolytic conduction? (4)
(b) Briefly explain fuel cells. (4)
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 2F.SC – Part II Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
P R O F E S S O R S A C A D E M Y
Aluminium Oxide isAcidic oxide
Basic oxide
Amphoteric oxide None
The color of copper bead in hot oxidizing flame in borax bead test Green Red Blue
Reddish brown
Aluminium is passive towards Dil HNO3Conc. HNO3
Conc. H2SO4 HCl
The enert pair effect is most marked in element
B C Sn Pb
The solution of Borax in water is Basic Acidic Amphoteric None
Which of the following is 2.4% in earth crust
Silicon Rb Na N2
Borax is used in Medicine Eye drops Softening of H2O
All
The formula of pyroboric acid is H3BO3 H2B8O4 H6B4O9 H2B4O7
The chief ore of Aluminium is Na3AlF6A
l2O3.2H2OA
l2O3.H2O(D)
Al2O3.3H2
O Which of the following is not a use of
methyl siliconWater
repellentAntifreez
eLubricant Hydrauli
c break Which of the following is not a
semiconductorSn Se Ge Si
Which of the following is a special feature of borate glass
Heat resistant
Low melting
Make chemical garden
All
SUBJECTIVE (Chapter # 3)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. What is the effect of heat on boric acid?ii. How semiconductors are used in transistors?iii. What is talc or soap stone?iv. What is chemistry of Borax bead test?v. How Borax is used to remove hardness of water?vi. Why silicone oil is preferred over ordinary petroleum oil?vii.How Borax is obtained from coleminite?viii. What happens when red lead is heated?ix. What is a chemical garden?x. What is vitreous silica?xi. Why articles of clay become reddish upon heating?xii.How clay is prepared from silicate rocks?
Give the extensive answers of the following questions.
Question # 3. (a) Both Carbon and Silicon contain four e- in their outermost shell. Why their compounds widely different from each other? (4)
(b)How Al react with (i) N2 (ii) H2SO4 (4)Question # 4.
a. Give any two methods for synthesis of Borax. (4)b. Give four uses of Aluminium. (4)
Question # 5. a. Write formula of following compounds.
i. Zircon ii. Asbestos iii. Dolomite iv. Zeolite (4) b. Write a comprehensive note on massicot or litharge. (4)
P R O F E S S O R S A C A D E M Y
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 3F.SC – Part II Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
i. Allotropic form of phosphorus which is most poisonous is White Red Black Yellow
ii. The chemical composition of brown ring in ring test for nitrates FeSO4.NO2 FeSO4.NO FeSO4.NO3 Fe2(SO4)3
iii. Which of following have garlic like smell? PCl3 PCl5 P2O3 P2O5
iv. Phosphorous acid upon thermal decomposition yields phosphoric acid and P2O5 Phosphene Phosgene P2O3
v. H2S upon reaction with HNO3 produce S+NO2+H2O SO2+NO+H2O H2SO4+NO2 NO+S+H2O
vi. Which of the following is heavy spar? Cu2S BaSO4 MgSO4 HgS
vii. Quartz contains 48% O2 89% O2 53% O2 50% O2
viii. Which of following acid of phosphorous can exists at temperature 316oC. H3PO3 H3PO4 HPO3 H4P2O7
ix. Nitric acid does not react with Platinum Iridium Titanium All of them
x. Oxides of Phosphorous are Acidic Amphoteric Basic Neutral
xi. Laughing gas is chemically NO N2O NO2 N2O4
xii. Which of the following species has maximum no. of unpaired electrons? O2 O2
+ O2- O2
-2
xiii.xiv.xv.xvi.xvii.
SUBJECTIVE (Chapter # 4)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. Why does aqua regia dissolve gold and platinum?ii. Compare properties of sulphur and oxygen.iii. Why is SO3 dissolve in H2SO4 but not in H2O?iv. Give the advantages of contact process.v. NO2 is a strong oxidizing agent, prove with example.vi. P2O5 is a dehydrating agent, prove with chemical equation.vii. How black phosphorous is prepared?viii. How does Zn react with HNO3?ix. How does HNO3 react with As?x. How NO2 act as oxidizing agent?xi. How does N2O support combustion?
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P R O F E S S O R S A C A D E M Yxii. Why N2 is chemically inert at room temperature?xiii.
Give the extensive answers of the following questions.
QUESTION # 3. How H3PO4 can be prepared? (8)
QUESTION # 4. Explain contact process with flow chart. (8)
QUESTION # 5. (a) What is Birkeland and Eyde’s process? (6)
(b) How HNO2 can be prepared? (2)
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 4F.SC – Part II Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
i. Which of the following Hydrogen Halide is the weakest acid in solution? HF HBr HI HCl
ii. The anhydride of HClO4 is ClO3 ClO2 Cl2O5 Cl2O7
iii. Which halogen occurs naturally in a positive oxidation state? Fluorine Chlorine Bromine Iodine
iv. Which halogen can oxidize all halide ions in molecular form?
F2 Cl2 Br2 I2
v. Which of the following gas is used for earth quake prediction?
Helium Neon radon Xenon
vi. Which compound is added in leaded gasoline to save engine from formation of lead oxide?
vii. Lanthenoids and Actinoids are calledTypical
transition elements
Non-Typical transition elements
Inner transition elements
Outer transition elements
viii. The shape of [Cu(NH3)4]-2 is Square planer Octahedral Trigonal Tetrahedral
ix. The coordination number of Pt in [PtCl(NO2)(NH3)4]2+ -2 4 1 6
x. The formula of haemitite ore is FeO Fe2O3 Fe3O4 Fe2O3.3H2O
xi. The second transition series starts with La Ac Y Zr xii. Which one is an example of alloy Steel Brass Bronze All of them xiii.xiv.xv.
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P R O F E S S O R S A C A D E M Yxvi.xvii.
SUBJECTIVE (Chapter # 5,6)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. What is disproportionation reaction give example?ii. What is Teflon give its uses?iii. Halogen are oxidizing agents, justify.iv. Which halogen is used as antiseptic?v. Why HF is less viscous as compared o H2O?vi. What is mean by available chlorine?vii. What are freons? Give their uses.viii. Why Fe+3 and Mn+2 show maximum paramagnetic behavior?ix. Define ligand. Give example.x. What is meant by chelates?xi. What is meant by corrosion? How it can be prevented?xii. What are interstitial compounds?xiii.
Give the extensive answers of the following questions.
QUESTION # 3. (a) Give methods for preparation of XeF2 , XeF4 , XeF6. (3)
(b) Give Hesen Clever method for preparation of bleaching powder. (3)
(c) Why HF differ from other halogens? (2)
QUESTION # 4. (a) What are applications of Argon in daily life? (3)
(b) What is effect of increase in oxidation number of halogens on strength of oxy acids of halogens. (3)
(c) What are non-typical transition elements?
QUESTION # 5. (a) Give methods of preparation of KMnO4. (4)
(b) Give balance equation of cromyl test. (2)
(c) What is galvanizing? (2)
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 5F.SC – Part II Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
i. At temperature and pressure cracking can be done in the presence of Al2O3 SiO2 Al2O3 and SiO2 Fe2O3 and SiO2
ii. The rate of chemical reaction of organic compounds Fast Very fast Slow Intermediate
iii. Ethers show phenomenon of Functional
group isomerism
Metamerism Tautomerism Chain isomerism
iv. Hexane has isomers 3 4 5 6
v. The functional group of imine is -NH2 C=NH -OH -CHO
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P R O F E S S O R S A C A D E M Yvi. Carbocyclic compounds which resemble aliphatic
compounds Alicyclic acyclic Aromatic Hetex
vii. Grignard re-agent is reactive due toPresence of
halogen atomPresence of
Mg atomPolarity of C-Mg bond None of above
viii. Which one of following is not a nucleophile NH3 CH3O- CH3+ SH
ix. Which compound is formed when ammonia reacts with Grignard re-agent.
Alkane Ethyl amine Ethanol Methyl amine
x. Which of the following have highest bond energy? C-F C-Cl C-Br C-H
xi. The alkyl halide can be converted into alcohol by Dehydration Substitution Dehalogenation Elimination xii. Nitration of phenol at high T gives Benzoic acid Oxalic acid TNT Picric acid xiii.xiv.xv.xvi.xvii.
SUBJECTIVE (Chapter # 7,10)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. What is meant by thermal cracking?ii. What is reforming of petroleum?iii. Define functional group.iv. What is knocking? How it can be stopped?v. Define octane number.vi. Why there is no free rotation in a double bond?vii. What are elimination reactions?viii. How alkyl halides are changed into alkanes?ix. What is reactivity of Grignard re-agent?x. Why the alkyl halides are more suitable for SN1 reactions?xi. Give reactivity of Alkyl halides.xii. How tetra ethyl lead can be prepared from alkyl halide?xiii.
Give the extensive answers of the following questions.
QUESTION # 3. (a) Explain structure of CH=CH by Hyberidization. (3)
(b) What are functional group isomers? Give two examples. (c) How octane number can be improved? (2)
QUESTION # 4. (a) Explain Cis trans isomerism. (3)
(b) What are Heterocyclic compounds? (3) (c) Compare SN1 and SN2 reactions. (2)
QUESTION # 5. (a) How do you prepare alkyl halide from alcohols? (4) (b) How do you conver (4)
i) CH3-CH2-Br ⟶ CH=CH ii) CH3-CH3 ⟶ (C2H5)4Pb
(c) Write equation of Grignard re-agent when reacts with CO2. (1)
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 6F.SC – Part II Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
/75
P R O F E S S O R S A C A D E M Y
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
i. Venyle acetylene combines with HCl to form Benzene Neoprene Chloroprene Divenyl
acetylene ii. B-B́-dichloroethyle sulphide is commonly known as Laughing gas Mustard gas Phosgene gas Bio gas
iii. Which one gas is used for artificial ripening of fruits Ethene Propene Ethane Methane
iv. Wthanol on treatment with alcoholic KOH gives Methane Ethene Ethyne Ethane v. Addition of water to propyne in the presence of HgSo4
and H2SO4 gives Propanal Propanone Propanol Acetal dehyde
vi. When acetylene is passed through copper tube at 300oC, it gives
Venyl acetylene
Divenyle acetylene
Benzene Toluene
vii. Which one of following has acidic H? Butane 1-butene 1-butyne 2-butyne
viii. Which one of following is not give by alkanes? Addition Decompositi
on Substitution Catalytic reactions
ix. Alkanes containing C5-C17 carbons are Gases Liquids Solids Unpredictable
x. What happen when bromine is added to ethene Epoxide form Vicinal dihalide form HBr formed Ethyl bromide
formxi. Acetic acid derives its name from Veniger Formica Barbra valera
xii. Mustard gas is Gas Low boiling liquid
High boiling liquid Steam
xiii.xiv.xv.xvi.xvii.
SUBJECTIVE (Chapter # 8)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. What are saturated hydrocarbons?ii. Define with example Morkovnikov’s rule.iii. Differentiate b/w vicinal di-halides and germinal di-halides.iv. Give one comfirmatory test of alkyne.v. Define Bayer’s test with example.vi. What are symmetrical alkanes. How they are prepared?vii. Why π bond is more reactive as compared to sigma bond?viii. How synthetic rubber is obtained from acetylene?ix. How soda amide reacts with molten sodium?
x. Write IVPAC names of following. a) C−C−CCC
−C−CC¿
B) C−CC
−CC
−C−C−CCC
xi. Convert ethane into methane.xii. What is Raney Nickle? How it is prepared?xiii.
Give the extensive answers of the following questions.
QUESTION # 3. (a) How alkanes are prepared by Sabatier sendern reaction and reduction of alkyle halid?
(3)
(b) Give polymerization reactions of alkynes. (3) (c) Distinguish b/w CH2=CH2 and CH=CH (2)
QUESTION # 4. (a) Explain methods of preparation of alkenes. (4)
(b) How alkenes react with H2O and O3. (4)
QUESTION # 5. Starting from alkyne, how following products are obtained? (8)
i. acetal-dehyde ii. Acrylonitrite iii. Oxalic acid iv. Venyl acetylene
P R O F E S S O R S A C A D E M Y
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 7F.SC – Part II Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
i. Which one of the following is not meta directing group -CN -OH -CHO -COOH
ii. By which method the molecular mass of benzene was determined as 78.108
Specific gravity method
X – ray diffraction
Vapour density method
Mass spectrometry
iii. When Benzene is substituted by halogens only which one of the following halogens is given the number position in ring while writing the name of compound.
Fluorine Chlorine Bromine Iodine
iv. In Friedal craft alkylation AlCl3 is used to generate Strong electrophile
Weak elerophile
Strong nucleophile
Weak nucleophile
v. The rectified sprit contain 80% alcohol 95% alcohol 99% alcohol 100% alcohol
vi. K2Cr2 / H2SO4 generate Oxygen Hydrogen Nascent Oxygen Nascent Hydrogen
vii. The oxidation of isopropyl alcohol will yield Propane Propanol Propanone Propanoic acid
viii. Ethyl alcohol can be identified by Ring testSolver mirror
test Iodoform test Tollen’s reagent
ix. Heating a mixture of sodium benzoate and soda lime gives
Benzene Methane Toluene Naphthalene
x. Benzene is resistant to Alkylation Reduction Oxidation Ozonolysis
xi. Ethers are isomeric with Aldehydes Ketones Alcohols Acids xii. 2, 4, 6 – trinitrophenol is called Aspirin Picric acid p-nitrophenol m-nitrophenolxiii.xiv.
SUBJECTIVE (Chapter # 9,11)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. How methanol is prepared commercially from water gas?ii. What is fermentation of sugar give reaction?iii. What is rectified siprit?iv. What is Lucas test?v. What is Dow’s method?vi. How methanol and ethanol are distinguished?vii. Why phenol is more acidic as compared to ethanol?viii. What is Williumson’s synthesis?ix. What is Wurtz-fittig reaction?x. What is friedal craft alkylation?xi. What is slphonation of benzene?xii. Why benzene has extra ordinary stability?
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P R O F E S S O R S A C A D E M Y
Give the extensive answers of the following questions.
QUESTION # 3. (a) Explain structure of benzene in detail. (8)
QUESTION # 4. (a) Explain directive influence of substituents on benzene ring? (8)
QUESTION # 5. Complete following reactions (2+2+2+2)
FeBr3
(i) + CH3-CH2 – OH → (ii) + Br2 ---------------→
(ii) C2H5OH + PCl5 → (iv) C2H5Cl + Ag2O →
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 8F.SC – Part II Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
Which of the following compound will not give idoform test
Acetaldehyde Acetone Butanone
3-pentanone
Canizarro’s reaction is not given byFormaldeh
yde Acetaldeh
yde Benzaldehy
de
Trimethyl acetaldehy
de
Calcium acetate on heating gives Acetaldehyde
Acetone Acetic acid Methane
Aldehydes may be distinguished from ketones by
Tollen’s test
Grignard reagent
Canizarro’s reaction
Aldol condensati
on
Trimer of formaldehyde is calledPara
aldehyde
Meta formal dehyde
Meta aldehyde All
Which one is most difficult to oxidize HCHO CH3CHO CH3COCH3C
H3CH2CHO
Which of the following is not fatly acid Propanoic acid
Acetic acid
Butanoic acid
Phthalic acid
which one is not carboxylic acid Oxalic acid
Benzoic acid
Picric acid Valeric acid
which one is basic amino acid Lysine Glycine Glutamic acid
Alanine
one can separate a mixture of carboxylic acid and aldehyde by
Na2SO3 Na2CO3 NaHCO3 H2SO3
which of the following can reduce carboxylic acids to alcohol
H2 / Ni H2 / Pt NaBH4 LiAlH4
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0 0
P R O F E S S O R S A C A D E M Y The origin of formic acid is Valera Red ants Oils Veniger
SUBJECTIVE (Chapter # 12 , 13)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)i. What is canizarro’s reaction?ii. Only methyl detones give idoform reaction while not other, why?iii. The reduction of aldehydes and ketones give alcohols, how?iv. What is aldol condensation?v. What is fehling solution test?vi. Convert propanone into 2-propanol.vii. How carboxylic acids react with carbonates?viii. What is Zwitterion?ix. What are acidic and basic amino acids?x. What are peptides and peptide linkages?xi. What is ninhydrin test?xii. Boiling points of aliphatic carboxylic acids are relatively high, why?
Give the extensive answers of the following questions.
QUESTION # 3. (a) Give lab preparation of formaline. (3) (b) what are acetals? Give their preparation. (3) (c) What is Tollen’s test? (2)
QUESTION # 4. (a) Give polymerization of acetaldehyde and formaldehyde. (3)
(b) Give reaction of CH3COOH with SOCl2, NH3 with mechanism. (3)
(c) Convert CH4 → CH3COOH. (2)QUESTION # 5. (a) Give two methods of preparation of carboxylic acids. (4)
(b) What are essential and non essential amino acids? (2) (c) Convert CH3 – C – CH3 → CH3CH2OH (2)
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 9F.SC – Part I Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
/75
P R O F E S S O R S A C A D E M Y
Which of the following is slowest reaction
Neutralization
reaction
Redox reaction
Hydrolysis of ester
Rusting of iron
Order of reaction may be Positive Negative Fractional All
Hydrolysis of tertiary butyl bromide
Zero order First order Second order Pseudo first order
Half life of N2O5 is 24min 48min 72min 24sec Catalyst for reaction
HCOOH H2O+COCu Al2O3 FeO V2O5
The rate of endothermic reactions …. with increase in T
Increases Decreases
First increase
then decrease
All
The rate of chemical reaction depends upon
Temperature
Surface area
Concentration
All
The reaction rate becomes four times by doubling the concentration of reactant. Then order of reaction
First order Second order
Third order Zero order
Velocity constant is rate constant when concentrations of reactants are
Zero Unity Two Three
Units of rate constant Mole dm-
3sec-1Mole cm-
3sec-1Mole dm3sec-
1 Sec-1
If products of a reaction itself act as catalyst called
Holo enzyme
Auto catalyst
Negative catalyst
Self catalyst
Enzyme for reaction C2H12O6 2C2H5OH + 2CO2
Diastase Invertase Zymase Hexokinase
SUBJECTIVE (Chapter # 11)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)1. Differentiate b/w instantaneous rate and average rate.2. What is negative catalyst?3. Under what condition instantaneous rate and average rate are equal?4. Define activation of a catalyst.5. What are Psendo first order reactions?6. Briefly describe that finely divided catalyst is effective.7. Define order of reaction with example.8. Catalysts are specific for reaction. Explain with example.9. Rate of a chemical reaction is ever changing parameter, explain. 10. What are enzymes?11. Differentiate b/w rate and rate constant.12. Radioactive decay is always first order explain.
Give the extensive answers of the following questions.
QUESTION # 3. (a) What is homogeneous and heterogeneous catalysis? (4)
(b) Explain concept of activation energy for endothermic and exothermic reaction. (4)
QUESTION # 4. (a) What is Arhenius equation? How T is related to Ea? (4)
(b) How rate of chemical reaction is determined by physical methods? (4)QUESTION # 5. (a) What is half life? Give concept of half lives for different order of reactions. (4)
(b) Give four characteristics of catalyst. (4)
P R O F E S S O R S A C A D E M Y
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity TEST # 9F.SC – Part II Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: 15 min)Statements A B C D
One of the most significant achievement of polymer chemistry is the replacement of
Plastic Glass Rubber Natural
materials
Sand belongs to Natural
polymers In-organic Organic Artificial
The properties of polymeric materials largely depend upon
Chemical compositio
nStructure
No. of monomers All
PVC pipes belongs to Thermoplastic
Thermosetting
Terpolymer
Copolymer
Which of the following belongs to mono sacch arides
Raffinose Mannose Lactose Xylose
One of the following is more soluble in water and gives blue colour with I2.
Amylopectin
Glycogen Amylase Glactose
Glycogen is more closely resemble with Amylase Amylopectin Cellulose Chitin
The proteins denature by changes in Temperature
pH Redox conditions
All
Animal fats are located in Chest region
Adipose tissue
Muscles Vessels
When ergosterol is irradiated with ultraviolet rays it is converted into
Cholesterol Testosterone
Vitamin D2 Estrogens
Nylon is obtained by heating Acrylic acidEpichlorohy
drin Venyl
chloride
adipic acid with
hexamethylene
diamine The nitrogen base different in RNA as
compared to DNA.Cytocine Thymine Guanine Adenine
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P R O F E S S O R S A C A D E M Y
SUBJECTIVE (Chapter # 14)
Question # 2. Give the short answers of the following questions. (17 x 2 = 34)xiii. What is function of ligares?xiv. What is a poenzyme?xv. Define iodine number.xvi. What is sponification number?xvii. How proteins become denatured?xviii. Describe types of polymers on the basis of temperature.xix. What is degree of polymerization?xx. What is condensation polymerization?xxi. What is copolymer?xxii. What is addition polymerization?xxiii. What is rancidity of fats?xxiv.
Give the extensive answers of the following questions.QUESTION # 3. (a) Explain polysaccharides in detail. (4)
(b) What factors affecting enzyme activity? (4)QUESTION # 4. (a) Explain structure of DNA. (4)
(b) Explain structure of fats and oils. (4)QUESTION # 5. (a) Point out difference b/w starch and cellulose. (4)
(b) What are repeating units in (4) i. Polystyrene ii. Teflon iii. Nylon 6, 6 iv. Orlon
P R O F E S S O R S A C A D E M Y
Chemistry Resilience, Seeking True Knowledge & Hard Working is our identity GRAND TESTF.SC – Part I Pre-Board Examination Test System/2011 Chem/PAJ/2011Name: Marks:
OBJECTIVE: Tick the correct answer from the given options. (Time: min)Statements A B C D
In combustion analysis, H2O vapours are absorbed by
50% KOH Mg(ClO4)2 NaOH MgCl2
When 6d orbital is completed, the entering electron goes into
7f 7s 7p 7d
In sp2 hybridization, the orbitals are oriented at an angle of
109.5o 120o 180o 90o
The sum of pH and pOH is always 7 Zero 14 10-14
The mass of one mole of electrons is 1.008 g 0.55 mg 0.184 mg 1.673 mg
Solvent extraction is an equilibrium process and is controlled by
Law of mass action
The amount of solvent
used
Distribution law
The amount of
solute The volume of ice increases than
liquid water by5 % 9 % 12 % 15 %
Splitting of spectral lines when atoms are subjected to strong electric fields is called
Zeeman's effect Stark effect
Photoelectric effect
Compton effect
Balmer series is found in I.R. Region U.V. Region Visible region
None of these
Which of hydrogen halides has highest % of ionic character?
HCl HBr HF HI
In case when [OH-]>[H+] the solution is
Acidic Neutral Basic None of these
If salt bridge is not used between two half cells, then the voltage
Decreases rapidly
Decreases slowly
Does not change
Drop to zero
Ionic solids are characterized byLow
melting points
Good conductivity
in solid state
High vapour pressures
Solubility in polar solvents
Which of the molecules has zero dipole moment?
NH3 CHCl3 H2O CO2
A solution of glucose is 10% W/V. The volume in which 1g mole of it is dissolved will be
1 dm3 1.8 dm3 200 cm3 900 cm3
The cathodic reaction in the electrolysis of dil H2SO4 with Pt electrodes is
Reduction Oxidation
Both oxidation
and reduction
None of these
The e/m value for the positive rays is maximum for
Hydrogen Helium Oxygen Nitrogen
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P R O F E S S O R S A C A D E M Y
SUBJECTIVE (GRAND TEST)
Question # 2. Give the short answers of any twenty two questions. (22 x 2 = 44)1. Why do we feel uncomfortable breathing at higher altitudes?2. Why is necessary to decrease the pressure in the discharge tube to get the cathode
rays?3. What is stoichiometry and define yield of a chemical reaction?4. How limiting reactant controls the amount of products formed?5. Give reasons that law of conservation of mass has to be obeyed during stoichiometric
calculations.6. Which solvents are mostly used in crystallization?7. Differentiate between diffusion and effusion of the gases.8. Evaporation takes place at all temperatures. Explain with reason.9. Explain with reason that ionic crystals are highly brittle.10. Give the Moseley's equation. Also write its importance.11. Why ionization energy decreases within a group and increase along a period?12. No bond in chemistry is 100% ionic, justify it.13. Define bond energy and bond length.14. Differentiate between exothermic and endothermic reactions.15. Why do we need buffer solution in daily life?16. How do you justify that boiling point of the solvents increase due to the presence of
solutes?17. Give reason hat a porous plate or salt bridge is not required in the lead storage cell.18. Calculate the oxidation number of chromium in i) Cr2O7
2- ii) K2Cr2O7
19. Define Catalytic poisoning.20. Anionic radius is always larger than parent atom. Why?21. For what purpose bomb calorimeter is used?22. Why the sodium chloride is used to lower the melting point of ice?23. How X-Rays are produced?24. Volume of real gas cannot be zero at any temperature. Why?25. Why heat of vaporization of hexane is greater than that of ethane?26. Why the metals are malleable and ductile?27. What is the role of stationary phase in chromatography?28. Evaporation of liquid is cooling process. Justify it.29. Mg atom is twice heavier than carbon atom. Explain it.30. Give two applications of Dalton's law of partial pressures.31. What is plasma? Give its two uses.32. What is frequency and wavelength?33. The radioactive decay is always a first order reaction. Why?
Do any of the three questions, all questions carry equal marks? (8 x 3 = 24)
QUESTION # 3. (a) Describe manometric method for the measurement of vapour pressure.
(b) An organic compound having molecular mass 116, on combustion analysis gives 40.92% carbon and 4.58% hydrogen. Find out the molecular formula of such compound.
QUESTION # 4. (a) What are quantum numbers? Discuss their significance? (b) Calculate the number of molecules in the given amount of each
gas. i) 20.0cm3 of CH4 at 0oC and pressure 700 mm Hg. ii) 1.0cm3 of NH3
at 100oC and pressure of 1.5atm.QUESTION # 5. (a) Define and classify atomic orbital hybridization. Discuss the structure of BF3 in the light of orbital hybridization.
P R O F E S S O R S A C A D E M Y (b) Explain briefly energy of activation.
QUESTION #6. (a) Define the following. i) Surroundings ii) Standard enthalpy of atomization
iii) Standard enthalpy of solution. (b) What are non-ideal solutions? Discuss their types with example.
QUESTION #7. (a) Balance the following equations by oxidation number method.i) Br2 + NaOH→ NaBr + NaBrO3 + H2Oii) NaCl + H2SO4 MnO2 → Na2SO4 + MnSO4 + H2O + Cl2
(b) N2(g) and H2(g) combine to give NH3(g). the value of Kc in this reaction at 500oC is 6.0 x 10-2. Calculate the value of Kp for this reaction.
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