1 Which one of following complex has the highest magnitude of crystal field splitting energy ($\triangle _{0}$)? A) $[Co(H_{2}O)_{6}]^{3+}$ B) $[Co(NH_{3})_{6}]^{3+}$ C) $[Co(C_{2}O_{4})_{3}]^{3-}$ D) $[CoF_{6}]^{3-}$
3 How many ions of the following have bond order of 2.5? $N_{2}^{-},NO^{-}, C_{2}^{-}, N_{2}^{+}, C_{2}^{2-}, CN^{+}$ A) 4 B) 3 C) 2 D) 5
4 What are two types of crystal structures shown by ice at different pressures? A) Hexagonal and monoclinic B) Cubic and monoclinic C) Hexagonal and tetragonal D) Cubic and hexagonal
5 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
6 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
7 The compound that does not undergo haloform reaction is A) $CH_{3}CHO$ B) $CH_{3}CH_{2}OH$ C) $CH_{3}COCH_{3}$ D) $C_{2}H_{5}COCH_{2}CH_{3}$
8 Find the suitable method from the following to prepare primary amines without the loss of carbons A) Gabriel method B) Alkylation method C) Hoffman Bromamide method D) Stephen method
9 The maximum number of electrons that can have the set of quantum numbers, n=4, ml=0 and ms = 1/2 is A) 3 B) 4 C) 5 D) 6
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 The enthalpy change for freezing of 1 g of water at 1 bar and $0^{0}$ C is 334 J . Calculate the internal energy change in J when 1g of water is converted into ice? A) 205 B) 334 C) 0 D) 668
12 A solution of 17.1 w% of surcose (molar mass =$342g mol^{-1}$) is isotonic with a x w% solution of oxalic acid (molar mass =90g mol-1) . assume the degree of dissociation of oxalic acid as 0.01 . what is x? A) 9 B) 0.45 C) 4.41 D) 0.90
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 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) $C_{8}H_{8}$
15 The products formed during the reaction of carbon with conc. $H_{2}SO_{4}$ are $C+ H_{2}SO_{4} $ $\underrightarrow{ \triangle}$ products A) $CO, SO_{2}, H_{2}O$ B) $CO_{2}, SO_{2}, H_{2}O$ C) $CO, CO_{2},H_{2}O$ D) $SO_{2}, H_{2}O$
