UNIVERSITY OF HYDERABAD ENTRANCE EXAMINATION – 200X ...

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50 When ammonium hydroxide is added to an aqueous solution of copper sulfate, the color of the solution becomes a deeper blue. The reaction taking place is best described as: (A) Redox (B) Rearrangement (C) Addition (D) Substitution 51. In acid medium one mole of Fe 2+ will be equivalent to how many moles of MnO4 − ? (A) 5 moles (B) 1/5 moles (C) 2 moles (D) 1/2 moles 52. The products obtained when chlorine reacts with cold and dilute solution of sodium hydroxide are: (A) Cl − + ClO2 − (B) Cl − + ClO − (C) Cl − + ClO3 − (D) Cl − + ClO4 − 53. The oxidation states of boron in B2Cl4 and oxygen in hydrogen peroxide are, respectively, (A) +2 and −2 (B) +3 and −1 (C) +2 and −1 (D) +3 and −2 54. 25.4 g of iodine and 14.2 g of chlorine are made to react completely to form a mixture of ICl and ICl3. The masses of ICl and ICl3 produced are: (A) 16.25 g and 7.1 g respectively (B) 32.5 g and 7.1 g respectively (C) 16.25 g and 23.35 g respectively (D) 25.4 g and 23.35 g respectively 55. Arrange the following in the order of decreasing size: Ca 2+ , S 2− , Ar, Cl − (A) Cl − < S 2−
59. Which of the following is called the third allotrope of carbon? (A) Graphite (B) Fullerene (C) Diamond (D) Carbon nanotube 60. The Cubic unit cell is defined by: (A) a ≠ b ≠ c, α = β = γ = 90 o (B) a = b = c, α = β = γ = 90 o (C) a = b ≠ c, α = β = 90 o , γ = 120 o (D) a = b = c, α ≠ β ≠ γ 61. In the compound [S2Mo5O23] 4− , the oxidation state of sulfur is: (A) 0 (B) +2 (C) +4 (D) +6 62. How many grams of magnesium sulfide are formed by reacting 0.20 moles of magnesium and 12.8 g of sulfur, if atomic weights of Mg and S are 24 and 32, respectively? (A) 13.0 (B) 11.2 (C) 12.8 (D) 17.6 63. Which of the following elements can exist in dry air without reacting? (A) White P (B) Rb (C) Ca (D) Ag 64. The metal ion electronic configuration in high-spin octahedral [CoF6] 3− is: (A) t2g 3 eg 3 (B) t2g 4 eg 2 (C) t2g 5 eg 1 (D) t2g 6 eg 0 65. The metal ion that has zero magnetic moment is: (A) Cu 2+ (B) Cr 3+ (C) V 5+ (D) Mo 5+ 66. Solutions of the following compounds, all at the same molality, were prepared in a given solvent. Which solution has the lowest freezing point? (A) KBr (B) Al(NO3)3 (C) NaNO2 (D) MgCl2 67. A closed vessel maintained at a constant temperature of 0 o C contains a mixture of water and ice. The number of degrees of freedom available to the system is: (A) 0 (B) 1 (C) 2 (D) 3 68. Units of the van der Waals’ gas constants, a and b, are respectively: (A) lit 2 atm mole -2 and lit mole -1 (B) atm lit -2 mole 2 and lit -1 mole (C) atm -1 lit 2 mole -1 and lit mole -1 (D) atm lit -1 mole 2 and lit -1 mole ⎛ ∂S ⎞ 69. The Maxwell relation ⎜ ⎟ ⎝ ∂V ⎠ T ⎛ ∂P ⎞ = ⎜ ⎟ ⎝ ∂T ⎠ (A) S ∝ RlnV (B) S ∝ RT lnV RT S ∝ (D) S ∝ RT ln P V (C) 2 V 9 implies that for a perfect gas
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Page 3 and 4: 10. The qualitative test of “phos
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Page 7: 42. Sucrose on hydrolysis with dilu
Page 11 and 12: 80. Several metal oxides exist in n
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UNIVERSITY OF HYDERABAD ENTRANCE EXAMINATION – 200X ...

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