1. A
   A-II, B-IV, C-I, D-III
2. B
   A-IV, B-I, C-II, D-III
3. C
   A-III, B-I, C-IV, D-II
4. D
   A-III, B-IV, C-I, D-II

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1. A
   5
2. B
   4
3. C
   3
4. D
   2

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1. A
   3
2. B
   2
3. C
   4
4. D
   1

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1. A
   B, C, D, E only
2. B
   B, D only
3. C
   D, E only
4. D
   A, B, C only

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1. A
   Both A and R are true and R is the correct explanation of A
2. B
   Both A and R are true and R is NOT the correct explanation of A
3. C
   A is true but R is false
4. D
   A is false but R is true

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1. A
   Chlordiazepoxide
2. B
   Meprobamate
3. C
   Valium
4. D
   Veronal

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1. A
   A, B and C only
2. B
   C, D and E only
3. C
   A and E only
4. D
   B, C and E only

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1. A
   About 99% of body calcium is present in bones and teeth
2. B
   All enzymes that utilise ATP in phosphate transfer require Ca as the cofactor
3. C
   The bone in human body is an inert and unchanging substance
4. D
   Mg plays roles in neuromuscular function and interneuronal transmission

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1. A
   $Fe_4[Fe(CN)_6]_3 \cdot xH_2O$
2. B
   $NaSCN$
3. C
   $[Fe(CN)_5NOS]^{4-}$
4. D
   $[Fe(SCN)]^{2+}$

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1. A
   (structure 1)
2. B
   (structure 2)
3. C
   (structure 3)
4. D
   (structure 4)

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1. A
   (structure 1)
2. B
   (structure 2)
3. C
   $C_4H_{10}$
4. D
   $HC\equiv C^-Na^+$

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1. A
   1, 3, 8
2. B
   3, 8, 1
3. C
   1, 8, 3
4. D
   8, 1, 3

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1. A
   Both Statement I and Statement II are true.
2. B
   Both Statement I and Statement II are false.
3. C
   Statement I is correct but Statement II is false.
4. D
   Statement I is incorrect but Statement II is true.

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1. A
   A-I, B-III, C-II, D-IV
2. B
   A-III, B-IV, C-I, D-II
3. C
   A-I, B-III, C-IV, D-II
4. D
   A-III, B-IV, C-II, D-I

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1. A
   1372.60 cal
2. B
   -137.26 cal
3. C
   -1381.80 cal
4. D
   -13.73 cal

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1. A
   4
2. B
   6
3. C
   2
4. D
   5

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1. A
   A and E only
2. B
   B and D only
3. C
   C and D only
4. D
   B and C only

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1. A
   Sol
2. B
   Gel
3. C
   Solid sol
4. D
   Foam

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1. A
   (structure 1)
2. B
   (structure 2)
3. C
   (structure 3)
4. D
   (structure 4)

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1. A
   $[Co(NH_3)_4(H_2O)Br](NO_3)_2$
2. B
   $[Co(NH_3)_3(NO_3)_3]$
3. C
   $[CoCl_2(en)_2]NO_3$
4. D
   $[Co(NH_3)_6]_2(SO_4)_3$

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1. A
   (structure 1)
2. B
   (structure 2)
3. C
   (structure 3)
4. D
   (structure 4)

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1. A
   $\Delta H = \Delta U - \Delta n_g RT$
2. B
   $\Delta H = \Delta U + \Delta n_g RT$
3. C
   $\Delta H - \Delta U = -\Delta n RT$
4. D
   $\Delta H + \Delta U = \Delta n R$

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1. A
   $\frac{1}{2}$
2. B
   $\frac{1}{3}$
3. C
   $\frac{1}{4}$
4. D
   $\frac{1}{12}$

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1. A
   $Fe_2O_3 + CO \to 2FeO + CO_2$
2. B
   $FeO + CO \to Fe + CO_2$
3. C
   $C + CO_2 \to 2CO$
4. D
   $CaO + SiO_2 \to CaSiO_3$

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1. A
   Osmosis
2. B
   Facilitated Diffusion
3. C
   Passive Transport
4. D
   Active Transport

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