86. The IUPAC name of the compound
HO
is (a) 3, 3-dimethyl-1-hydroxy cyclohexane (b) 1,1-dimethyl-3-cyclohexanol (c) 3, 3-dimethyl-1- cyclohexanol (d) 1,1-dimethyl-3-hydroxy cyclohexane 87. Consider the acidity of the carboxylic acids. (I) PhCOOH (II) o – NO2C6H4COOH (III) p – NO2C6H4COOH (IV) m – NO2C6H4COOH Which of the following order is correct? (a) (I) > (II) > (III) > (IV) (b) (II) > (III) > (IV) > (I) (c) (II) > (IV) > (I) > (III) (d) (II) > (IV) > (III) > (I)
88. The quantum numbers +1/2 and –1/2 for the electron spin represent
(a) rotation of the electron in clockwise and anticlockwise direction respectively (b) rotation of the electron in anticlockwise and clockwise direction respectively (c) magnetic moment of the electron pointing up and down respectively (d) two quantum mechanical spin states which have no classical analogue
89. The equivalent weight of an element is 29.4. The electrochemical equivalent of this element is
(a) 3.04 × 10 4 (b) 4.56 × 10 4 (b) 6.08 × 10 4 (d) 1.52 × 10 4
90. The number of O–O bonds in (CrO5) is
(a) three (b) two (c) one (d) zero 91. CHO 1. CH3COONa + (X) CH=CH COOH 2. H+ Identify the compound (X). (a) CH3COOH (b) (CH3CO)2O (c) BrCH2COOH (d) CHO COOH
92. The order of reactivity of the following compounds with PhMgBr is
(I) PhCOPh (II) CH3CHO (III) CH3COCH3
(a) (I) > (II) > (III) (b) (III) > (I) > (II) (c) (II) > (I) > (III) (d) (II) > (III) > (I)
93. Which of the following compound will not give a positive iodoform test?
(a) CH3 CH COOH OH (b) CH3 CH CH3 OH (c) C6H5 CH CH3 OH (d) C6H5 C CH2I O
94. The appropriate reagent for the following transformation is
COCH3
OH
CH2CH3
OH
(a) Zn Hg, HCl (b) NH2NH2, KOH (c) LiAlH4 (d) HI, P4
95. Which of the following dicarboxylic acid gives cyclic ketone on heating?
(a) CH2(COOH)2 (b) CH2COOH CH2COOH (c) HOOC(CH2)3COOH (d) HOOC(CH2)4COOH
96. For a hypothetical reaction, A + B C + D, the rate = k[A] 1/2 [B]3/2. On doubling the concentration of A and B, the rate will be (assume that the concentration of A & B initially were same)
(a) 4 times (b) 2 times (c) 3 times (d) none of these
97. If the equilibrium constant for the reaction, 2N2O5(g) 4NO2(g) + O2(g) is x M 3. The equilibrium constant for the reaction 2NO2(g) + ½O2(g) N2O5(g) is
(a) x (b) 1 -x (c) x2 (d) x
98. For the combustion reaction at 298 K, 2Ag(s) + ½ O2(g) 2Ag2O(s) which of the following relation will be true?
(a) H = U (b) H > U (c) H < U (d) H and U bear no relation with each other
99. For which of the following equation, will H be equal to U?
(a) H2(g) + ½ O2(g) H2O(l) (b) H2(g) + I2(g) 2HI(g) (c) 2NO2(g) N2O4(g) (d) 4NO2(g) + O2(g) 2N2O5(g)
100. For a system, A(g) + 2B(g) 3C(g) + D(g) at equilibrium, if volume is doubled, the reaction shifts in
(a) forward direction (b) backward direction (c) equilibrium will not be disturbed (d) none of these
101. The degree of dissociation for a reaction, N2O4(g) 2NO2(g) is 0.01. What would be Kc for the reaction assuming initial concentration of N2O4 is 1 M.
(a) 0.4 10 3 M (b) 0.5 10 3 M (c) 0.3 10 3 M (d) 0.2 10 3 M
102. When a poly atomic gas undergoes an adiabatic expansion, its temperature and volume are related by the equation TVn = constant, the value of n will be
(a) 1.33 (b) 0.33 (c) 2.33 (d) 1
103. Concentration of NaOH at 25°C is 10 3 M. pH at this temperature is
(a) 7 (b) 8 (c) 9 (d) 11
104. In a mixture of two volatile liquids A and B, the mole fraction of A is 0.4. What would be the mole fraction of A in the vapour phase if the vapour pressure of pure components are given as o AP = 100 mm Hg and o BP = 100 mm Hg.
(a) 0.4 (b) 0.6 (c) 0.25 (d) none of these
105. The molal depression constant for water is 1.86 K kg/mol. What will be, the freezing point of 0.1 M KCl in water assuming molality is same as molarity?
(a) +1.86°C (b) 0.186°C (c) 0.372°C (d) 0.093°C
106. If the anions (A) form hexagonal closed packing and cations (C) occupy only 2/3 of the octahedral voids in it, then the general formula of the compound would be
(a) CA (b) CA2 (c) C2A3 (d) C3A2
107.A solid has a structure in which tungsten (W) atoms are located at the corners of a cubic lattice, O atoms at the center of edges and Na atom at the center of cube. The formula for the compound is
(a) NaWO2 (b) NaWO3 (c) Na2WO3 (d) NaWO4
108. The amount of KMnO4 required to prepare 100 ml of 0.1 N solution in alkaline medium when KMnO4 is reduced to K2MnO4 is
(a) 1.58 g (b) 0.52 g (c) 3.16 g (d) 0.31 g
109. In Bohr’s hydrogen atom, the electronic transition emitting light of longest wavelength among the following is
(a) n = 5 to n = 4 (b) n = 4 to n = 3 (c) n = 3 to n = 2 (d) n = 4 to n = 2
110. If E1, E2 and E3 represent respectively the kinetic energies of an electron, particle and a proton, each having same de Broglie’s wave length, then (a) E1 > E3 > E2 (b) E2 > E3 > E1 (c) E1 > E2 > E3 (d) E1 = E2 = E3
111. To transform into O2N initial steps could be
(a) Nitration followed by Friedel Crafts alkylation. (b) Friedel Crafts alkylation followed by nitration. (c) Nitration followed by Friedel Crafts acylation. (d) Friedel Crafts acylation followed by Clemmensen’s reduction followed by nitration.
112. Which of the following compound is optically active?
(a)
C=C=C
CH3
H
CH3
H
(b)
C=C=C CH3 H CH3 Cl
(c)
Cl (d)
C=C=C=C
CH3
H
CH3
H
113. Buff coloured precipitate is obtained when FeCl3 is treated with
(a)
COOH
OH
(b)
NO2
(c)
CO
CO
O
(d)
CONH2
114. Hydration of
C CH in presence of H2SO4/HgSO4 gives
(a)
COCH3
(b)
CH2CHO
(c)
COCH3
(d)
CH2CHO
115. The standard heat of formation values of SF6(g), S(g) and F(g) are: 1100, 275 and 80 kJ mol 1 respectively. Then the average S F bond energy in SF6 would be
(a) 301 kJ mol 1 (b) 320 kJ mol 1 (c) 309 kJ mol 1 (d) 280 kJ mol 1
116. The oxidation of oxalic acid by acidified KMnO4 becomes fast as the reaction progresses due to:
(a) auto catalysis by Mn+2 (b) presence of 2 4SO (c) presence of K+ (d) presence of 4 MnO
117. Which of the following is/are diamagnetic? (i) Ni(CO)4 (ii) [NiCl4]2– (iii)[Ni(CN)4]2– (iv) [Fe(H2O)6]2+
(a) (i) only (b) (ii) only (c) (i) and (iii) only (d) (iv) only
118. During the electrolysis of aqueous nitric acid solution using Pt electrodes
(a) O2 is liberated at the cathode. (b) N2 is liberated at the anode. (c) O2 is liberated at the anode. (d) H2 is liberated at the anode.
119. Colloidal solution is (a) true solution. (b) suspension. (c) heterogeneous sol. (d) homogenous sol.
120. To make Ecell of the following concentration cell positive, what should be the relative concentration of Cl ions in the two half cells? Pt | Cl2 (1 atm) | Cl (C1) || Cl (C2) | Cl2 (1 atm) | Pt (a) C1 > C2 (b) C1 < C2 (c) C1 = C2 (d) Ecell cannot be positive
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