1. The number of octahedral sites per sphere in fcc structure is
a) 8
b) 4
c) 2
d) 1

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2. In a tetragonal crystal
a) a = b = c, α = β = 90⁰ ≠ γ
b) α = β = γ = 90⁰ , a = b ≠ c
c) α = β = γ , a ≠ b ≠ c
d) α = β = 90⁰, γ = 120⁰, a = b ≠ c

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1. When a solution is separated from a solvent by a semipermeable membrane, then the phenomenon taking place is called as
a) Osmosis
b) Diffusion
c) Solubility
d) None

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2. The value of K_f for water is 1.86⁰, calculated from glucose solution. The value of K_f for water calculated for NaCl solution will be
a) =1.86
b) <1.86
c) >1.86
d) Zero

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1. $\kappa$ = 4.95 x 10^-5 for a 0.001 M solution. The reciprocal of the degree of dissociation of acetic acid, if $\Lambda_{m}^{0}$ for acetic acid is 400 S cm^-2 mol^-1 is
a) 7
b) 8
c) 9
d) 10

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2. p(H₂)(p₁)|H^⊕(1M) | (H₂)(p₂), Pt cell reaction will be exergonic if
a) p₁ = p₂
b) p₁ > p₂
c) p₂ > p₁
d) p₁ = 1 atm

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1. Rate constant k = 1.2 x 10³ mol^-1 L s^-1 and E_a = 2.0 x 10² kJ mol^-1. When T → ∞:
a) A = 2.0 x 10² kJ mol^-1
b) A = 1.2 x 10³ mol^-1 L s^-1
c) A = 1.2 x 10³ mol L^-1 s^-1
d) A = 2.4 x 10³ kJ mol^-1 s^-1

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2. The rate of reaction increases by the increase of temperature because
a) Collision frequency is increased
b) Energy products decreases
c) Fraction of molecules possessing energy ≥ E₁ (threshold energy) increases.
d) Mechanism of a reaction is changed

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1. Brownian motion is an
a) Electrical property
b) Mechanical property
c) Optical property
d) Colligative property

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2. Which one of the following statements is correct?
a) Brownian movement is more pronounced for smaller particles than for bigger ones
b) Sols of metal sulphides are lyophilic
c) Hardy schulze law states, the bigger the size of the ion, the greater is its coagulating power
d) One would expect charcoal to adsorb chlorine more strongly than hydrogen sulphide.

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1. By which process Pb and Sn are extracted, respectively?
a) Carbon reduction, self-reduction
b) Self-reduction, carbon reduction
c) Electrolytic reduction, cyanide process
d) Cyanide process, electrolytic reduction

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2. In the froth flotation process for beneficiation of ores, the ore particles float because
a) They are light
b) Their surface is not easily wetted by water
c) They bear electrostatic charge
d) They are insoluble

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1. Which of the following is false?
a) Molten lead and zinc are miscible
b) Silver is more soluble in molten zinc than lead
c) Zinc-silver alloy is volatile
d) Zinc-silver alloy is heavie and gets solidified later than lead

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2. Among 3d transition series the IE
a) Increases regularly in moving from left to right
b) Decreases regularly in moving from left to right
c) Remains constant within the period
d) Increases gradually within the period but the relative increase is not sharp

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1. The magnetic moment of a certain complex (A) of Co was found to be 4.89 BM and the EAN as 36. Co also forms complex (B) with magnetic moment 3.87 BM and EAN as 37, and complex (C) with EAN as 36 but diamagnetic. Which of the following statements is true regarding the above observation?
a) The oxidation states of Co in (A) , (B) and (C) are +3, +2 and +3, respectively
b) Complexes (A) and (B) have sp³d² hybridisation state while (C) has dsp3 hybridisation state.
c) The spin multiplicities of Co in (A), (B) and ( C ) are 3,2, and 1, respectively.
d) The oxidation states of Co in (A), (B)and (C) are +6, +8 and +1, respectively

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2. The possible number of optical isomers in Cr(en)₂Cl₂]^⊕ is
a) 6
b) 3
c) 4
d) 2

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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 product (B) is:
a)
b)
c)
d) All

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1. The product formed in aldol condensation is
a) a beta-hydroxy acid
b) a beta-hydroxy aldehyde or a beta-hydroxy ketone
c) an alpha-hydroxy aldehyde or ketone
d) an alpha, beta unsaturated ester

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2. Among the following the strongest acid is
a) CH₃COOH
b) CH₂ClCH₂COOH
c) CH₂ClCOOH
d) CH₃CH₂COOH

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1. The pair in which both the species have iron is:
a) Nitrogenase, cytochromes
b) Carboxypeptidase, haemoglobin
c) Haemocyanin, nitrogenase
d) Haemoglobin, cytochromes

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2. At pH = 4, glycine exists as:
a)
b)
c) H₂NCH₂COOH
d)

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1. The distance between nucleons in atomic nucleus is of the order of (1 Fermi = 10^-13 cm)
a) 2 Fermi
b) 25 Fermi
c) 100Fermi
d) 40 Fermi

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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. High density arid low volatility of H₂SO₄ is due to
a) Strong bonds
b) van der Waals force
c) Hydrogen bonding
d) None

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2. Which shows maximum catenation property?
a) Se
b) Te
c) Po
d) S

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1. Mark the strongest reducing agent.
a) H₂F₂
b) HCl
c) HBr
d) HI

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2. In the reaction :
3Br₂ + 6OH^⊝ → 5Br^⊝ + BrO₃^⊝ + 3H₂O, Br₂ is
a) Oxiised
b) Reduced
c) Disintegrated
d) Disproportionated

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1. The fluoride which does not exist is
a) CF₄
b) SF₆
c) HeF₄
d) XeF₄

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2. The gas used for inflating the tyres of aroplanes is
a) H₂
b) He
c) N₂
d) Ar

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1. Reactivity of PrMgBr with the following in the decreasing order is:
(i) Alcohol (ii) Aldehyde
(iii) Ketone (iv) Ester
a) (iv) > (iii) > (ii) > (i)
b) (i) > (ii) > (iii) > (iv)
c) (ii) > (iii) > (i) > (iv)
d) (iv) > (i) > (iii) > (ii)

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2. $\xrightarrow[]{|\; \; HgSO_{4}/H_{2}SO_{4}}(A)\xrightarrow[]{2\, mol\, of\, MeMgBr/H_{3}O^{\oplus }}(B)$. (B) is :
a)
b)
c)
d)

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1. Oxidation of aldehyde and ketone by peroxybenzoic and to ester is called:
a) Elbs oxidation
b) Hell-Volhard-Zelinsky oxidation
c) Oppenauer oxidation
d) Baeyer-Villiger oxidation

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2.
The products (A), (B) and (C) are:
a) A ⇒ Azobenzene, (B) ⇒ Hydrazobenzene, (C) ⇒ Azoxybenzene
b) A ⇒ Azobenzene, (B) ⇒ Azoxybenzene, (C) ⇒ Hydrazobenzene
c) (A) → Azoxybenzene, (B) ⇒ Azobenzene, (C) ⇒ Hydrazobenzene
d) (A) ⇒ Azoxybenzene, (B) ⇒ Hydrazobenzene, (C) ⇒ Azobenzene

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1. Which of the following deactivates the aromatic nucleus?
a) -CH₃
b) -Br
c) -NH₂
d) -NR₂

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2. The decreasing order of dipole moment of the following is:
I. CH₃Cl II. CH₃Br III. CH₃F
a) (I) > (II) > (III)
b) (I) > (III) > (II)
c) (II) > (I) > (III)
d) (II) > (III) > (I)

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1. Benzamide on treatment withy POCl₃ gives:
a) Aniline
b) Benzonitrile
c) Chlorobenzene
d) Benzyl amine

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2. An organic liquid of the composition C₄H₈O₂ yields a sodium of an acid C₃H₆O₂ and methanol on boiling with NaOH solution. The given liquid is:
a) CH₃CH₂COOCH₃
b) CH₃COOC₂H₅
c) HCOOC₃H₇
d) CH₃CH₂CH₂COOH

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1. When PhNO₂ is reduced in alkaline medium, the product is:
a)
b) Ph-N=N-Ph (Azobenzene)
c) Ph-NH-NH-Ph (Hydrazobenzene)
d) All

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2. The compound which on reaction with aqueous nitrous acid at low temperature produces an oily nitrosoamine is:
a) Methylamine
b) Ethylamine
c) Diethylamine
d) Triethylamine

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1. Which of the following is a polyamide?
a) Teflon
b) Nylon-6,6
c) Bakelite
d) Terylene

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2. Ziegler-Natta catalysts
a) Are triethyl aluminium titanium tetrachloride complex (C₂H₅)₃Al + TiCl₄ .
b) Are used to prepare stereospecific addition polymers.
c) Are employed to have sterochemical control of the polymerisation process.
d) All the above.

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1. It is recommended that ammonia bottles be opened after cooling in ice for sometime. This is because
a) It brings tears to eyes
b) It has high vapour pressure
c) It is corrosive liquid
d) It is mild explosive

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2. Copper reacts with dil. HNO₃ to from a nitrate and
a) NO₂
b) NO
c) N₂O₃
d) N₂O₅

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