1. The atomic fraction (d) of tin in broze (fcc) with a density of 7717 kg m^-3 and a lattice parameter of 3.903 Å is (Aw Cu = 63.54, Sn = 118.7, 1 amu = 1.66 x 10^-27 kg)
a) 0.01
b) 0.05
c) 0.10
d) 3.8

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2. The electrical comductivity of semiconductor is
a) 10⁸ ohm^-1 cm^-1
b) 10^-22 ohm^-1 cm^-1
c) In the range of 10^-9 to 10²ohm^-1 cm^-1
d) None of the above

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1. The osmotic pressuere of a non-aqueous solution is measured by
a) Berkeley and Hartley method
b) Pfeffer method
c) Morse and Frazer method
d) Townend method

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2. A mixture of volatile components A and B has total vapour pressure (in torr)
P = 254 - 119χ_A
where χ_A is the mole fraction A in mixture. Hence, P_A⁰ and P_B⁰ are (in torr)
a) 254, 119
b) 119, 254
c) 135, 254
d) 154, 119

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1. An example of a simple fuel cell is
a) Lead storage battery
b) Laclanche cell
c) H₂ - O₂ cell
d) All of these

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2. Galvanized iron sheets are coated with
a) Copper
b) Nicel
c) Zinc
d) Carbon

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1. For a hypothetical reaction: A + B → Products , the rate law is r = k[A][B]⁰. The order of reaction is
a) 0
b) 1
c) 2
d) 3

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2. The efficiency of an enzyme in catalyzing a reaction is due to its capacity
a) To form a strong enzyme-substrate complex
b) To decrease the bond energy of all substrate molecules
c) To change the shape of the substrate molecules
d) To lower the activation energy of the reaction

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1. A freshlt formed ppt of SnO₂ is peptized by a small amount of NaOH. These colloidal particles may be represented as
a) $\left [SnO_{2} \right ]SnO_{3}^{2-};2Na^{\oplus}$
b) $\left [SnO_{2} \right ]Sn^{4+};O^{2-}$
c) $\left [SnO_{2} \right ]Na^{\oplus};OH^{\circleddash}$
d) $\left [SnO_{2} \right ]Sn^{4+};OH^{\circleddash}$

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2. Tyndall effect is not observed in
a) Suspension
b) True solution
c) Emulsions
d) Colloidal solution

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1. Which metal is a liquid at room temperature?
a) Hg
b) K
c) Na
d) Ti

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2. Composition of malachite mineral is
a) CuCO₃ .CuO
b) Cu(HCO₃)₂ .Cu(OH)₂
c) 2CuCO₃ .Cu(OH)₂
d) CuCO₃ .Cu(OH)₂

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1. Anhydrous cobalt (II) chlorie is blue in colour but on dissolving in water it changes to pink in colour because
a) Its oxidation state changes
b) Its magnetic character changes
c) Its coordination number changes
d) In water it shows fluorescence

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2. Which among FeO and Fe₂O₃ is more basic?
a) FeO
b) Fe₂O₃
c) Both have same basic strength
d) None of them is basic

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1. Increasing order EAN of the metals in
I. [Ni(CN)₄]^2- II. [Fe(CN)₆]^3-
III. [Cu(CN)₄]^3- is
a) I < II < III
b) I < II = III
c) I < III < II
d) III < II < I

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2. IUPAC name for [Fe(CO)2(σ - C₅H₅)(π-C₅H₅)] complex:
a) Dicarbonyl (η⁴-cyclopentadienyl) (cyclopentadienyl) ferrate(II)
b) Dicarbonyl (η⁵-cyclopentadiene) (cyclopentadienyl) iron(II)
c) Dicarbonyl (η⁵-cyclopentadienyl) (cyclopentadienyl) iron(II)
d) Dicarbonyl (η⁵-cyclopentadienyl) (η⁵-cyclopentadienyl) iron(II)

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1. Which of the following is most basic in character?
a) H₂O
b) CH₃CH₂OH
c) CH3OCH₃
d) C₆H₅OH

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2. The presence of peroxides in old samples of ether is detected by shaking them with a freshly prepared solution of Fe²⁺ (FeSO₄) followed by the addition of KCNS. The appearance of ……..colour indicates the presence of peroxides.
a) Blue
b) Green
c) Red
d) Brown

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1. Nucleophilic addition reaction will be most favoured in
a)
b) $(CH_{3})_{2}CHO$
c) $CH_{3}CH_{2}CHO$
d) $CH_{3}CHO$

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2. Which one of the following on treatment with 50% aqueous hydroxide yields the corresponding alcohol and acid?
a) C₆H₅CH₂CHO
b) C₆H₅CHO
c) CH₃CH₂CH₂CHO
d)

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1. Which base is present in RNA but not in DNA?
a) Uracil
b) Cytosine
c) Guanine
d) Thymine

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2. Subunits present in haemoglobin are:
a) 2
b) 3
c) 4
d) 5

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1. Artificial of radioactivity was first discovered by
a) Sea Borg
b) Rutherford
c) Einstein
d) Irene curie

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2. For the reaction given below, deduce the group of polonium in the periodic table (Pb belongs to group 14)
₈₄Po²¹⁰ → ₈₂Pb²⁰⁶ + ₂He⁴
a) 2
b) 14
c) 6
d) 16

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1. Which one has the highest and lowest boiling point?
a) H₂O, H₂S
b) H₂O, H₂Se
c) H₂S, H₂O
d) H₂S, H₂Se

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2. The acid used in lead storage cell is
a) Phosphoric acid
b) Nitric acid
c) Hydrochloric acid
d) Sulphuric acid

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1. A greenish yellow gas reacts with an alkali metal hydroxide to form a halate which can be used in fireworks and safety matches. The gas and the halate are
a) Br₂, KBrO₃
b) Cl₂, KClO₃
c) I₂, NaIO₃
d) I₂, KIO₃

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2. One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are
a) SO₂ and Cl₂
b) CO and Cl₂
c) NH₃ and SO₂
d) H₂S and Br₂

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1. Argon was discovered by
a) Cavendish
b) Lavoisier
c) Rayleigh
d) Thomson

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2. Which gas is filled in electric bulbs/tubes?
a) O₂
b) N₂
c) Ar
d) He

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1. Propane dithioic acid is prepared by the reaction of the following, followed by hydrolysis:
a) C₃H₇MgBr+ CS₂
b) C₂H₅MgBr + CS₂
c) C₃H₇MgBr + SO₂
d) C₂H₅MgBr + SO₂

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2. Coupling reaction between RMgX and R`X takes place to give R-R` in the presence of which of the following reagents?
a) R--OTs
b) CoCl₂
c) MnCl₂
d) All

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1. In Rosenmund reduction, which of the following does not poison the catalyst Pd?
a) BaSO₄
b) S
c) Quinoline
d) Xylene

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2. Imines or enamines are selectively reduced to 1⁰ or 2⁰ amines with:
a) NaBH₄
b) LAH
c) NaCNBH3
d) NaAlH₄

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1.
The final product (D) is:
a)
b)
c)
d) All

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2. Gammexane is the name given to:
a) C₆H₃Cl₃
b) C₆H₄Cl₂
c) C₆H₆Cl₆
d) Diphenytrichloroethane

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1. The decreasing order of ester formation with acetic acid in the presence of $H^{\oplus }$ is:

a) (I)>(III)>(II)>(IV)
b) (I)>(II)>(III)>(IV)
c) (IV)>(II)>(III)>(I)
d) (IV)>(III)>(II)>(I)

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2. Identify (Z) in the series given below.
$CH_{2}=CH_{2} \xrightarrow[]{HBr}(X) \xrightarrow[]{Hydrolysis}(Y) \xrightarrow[I_{2}excess]{Na_{2}CO_{3}}(Z)$
a) C₂H₅I
b) C₂H₅OH
c) CHI₃
d) CH₃CHO

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1. The following reaction is:

a) Benzidine rerrangement
b) Pinacol-Pinacolone rearrangement
c) Fries rearrangement
d) Benzil-benzilic acid arrangement

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2. Which of the following represents the poisonous gas which caused the tragedy in Bhopal in 1984?
a) CH₃C=N=S
b) CH₃-N=C=O
c) CH₃-N=C=S
d) CH₃-O-N=C

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1. Which is not a macromolecule?
a) DNA
b) Insulin
c) Palmitate
d) Starch

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2. Which one of the following is used to make non-stick cookware?
a) Polystrene
b) PVC
c) Poly(ethylene terephthalate)
d) Polytertrafluoroethylene

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1. When phosphine is bubbled through a solution of nitrate__________is precipitated.
a) Silver
b) Silver phosphide
c) Silver oxide
d) None of these

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2. Anomalous behaviour of nitrogen is due to
a) Small size and high EN
b) Non-ability of d-orbitals in valence shell
c) Ease of multiple bond formation
d) All

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