1 Match the following. A) A:V, B: IV, C:II, D:I B) A:III, B:IV, C:V,D:II C) A:IV, B:III, C:II, D:I D) A:III, B:I, C:V, D:II
2 What is the correction term in the pressure for real gas in comparison to the ideal gas? A) $\frac{n^{2}}{V^{2}}$ B) $\frac{aV^{2}}{n^{2}}$ C) $\frac{an^{2}}{V^{2}}$ D) $\frac{an^{2}}{V^{}}-nb$
3 Identify the oxidation states of Mn, when $MnO_{4}^{2-}$ ion undergoes disproportionation reaction under acidic medium A) +2,+7 B) +2,+5 C) +4,+4 D) +7,+4
4 For the reaction , $0.5 C(s)+0.5 CO_{2}(g)\rightleftharpoons CO(g)$ the equilibrium pressure is 12 atm . If CO2 conversion is 50% the value of Kp, in atm is A) 4 B) 1 C) 0.5 D) 2
5 Diffusion of $CH_{4}(g) $ and $O_{2}$ (g) occurs under similar conditions, then the ratio of their rates of diffusion is A) 1.414 B) 0.707 C) 2.312 D) 1.732
6 The boiling point (in K) of cis but-2-ene and dipole moment (in D) of trans but-2-ene are respectively A) 274,0.00 B) 277,0.00 C) 277,0.33 D) 274,0.33
7 How many grams of glucose are required to prepare an aqueous solution of glucose having a vapour pressure of 23.324 mm Hg at $25^{0} C $ in 100 g of water? The vapour pressure of pure water at $25^{0}C$ is 23.8 mmHg. (Molar mass of glucose =180 g mol-1) A) 20.4 B) 10.3 C) 1 D) 1.83
8 The mass of haemoglobin in mg required to protect from coagulation of 50mL of a gold sol on adding 5mL of 10% NaCl solution is (gold number of haemoglobin=0.03) A) 0.03 B) 0.75 C) 0.30 D) 0.15
9 Which of the following compounds has the highest dipole moment (D)? A) HBr B) $CH_{3}COCH_{3}$ C) $H_{2}S$ D) $COCl_{2}$
10 A spherical ball of radius 7 cm contains 56 w% iron. Find out the number of moles of iron present approximately in the ball? (d=1.4 g cm-3, atomic mass =56 g mol-1) A) 15.1 B) 20.1 C) 25.1 D) 35.1
11 What is the bonding nature in LiCl bond? A) Pure ionic B) pure covalent C) coordinate bond D) ionic and covalent
12 Benzaldehyde can be converted to benzonitrile by treatment with A) $NH_{3}$ B) $NH_{3}$ followed by reaction $C_{6}H_{5}SO_{2}Cl$ C) $NH_{2}OH $ followed by reaction with acetic anhydride D) $NH_{4}OH$
13 The elements with the highest and lowest electron gain enthalpy in group 16 respectively are A) O;Te B) O;Po C) S;O D) S;Te
14 Which is the correct order of dipole moments of $BF_{3},NF_{3} $ and $NH_{3}$? A) $ NH_{3} > BF_{3}>NF_{3}$ B) $BF_{3} > NF_{3} > NH_{3}$ C) $NH_{3} > NF_{3} > BF_{3}$ D) $NF_{3} > NH_{3} > BF_{3}$
15 A camphor sample melts at $176 ^{0} C.$ $K_{f}$ for camphor is 40 K kg mol-1 . A solution of 0.02g of a hydrocarbon in 0.8 g of camphor melts at $156.77^{0}C$ . Hydrocarbon is made up of 92.3% of carbon. What is the molecular formula of the hydrocarbon? A) $C_{6}H_{6}$ B) $C_{12}H_{12}$ C) $C_{4}H_{4}$ D) $C_{8}H_{8}$