1. A
   (a) - (iv), (b) – (i), (c) – (iii), (d) – (ii)
2. B
   (a) - (iii), (b) – (iv), (c) – (ii), (d) – (i)
3. C
   (a) - (i), (b) – (iii), (c) – (iv), (d) – (ii)
4. D
   (a) - (ii), (b) – (iii), (c) – (i), (d) – (iv)

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

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1. A
   Elastomers have polymer chains held together by weak intermolecular forces
2. B
   Fibers possess high tensile strength
3. C
   Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively
4. D
   Thermosetting polymers are reusable

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1. A
   500 mL of solvent
2. B
   500 g of solvent
3. C
   100 mL of solvent
4. D
   1000 g of solvent

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1. A
   $RCOO^-Mg^+X$
2. B
   $R_3CO^-Mg^+X$
3. C
   $RCOO^-X^+$
4. D
   $(RCOO)_2Mg$

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1. A
   Yes, because $E^\circ_{cell} = +0.287$ V
2. B
   No, because $E^\circ_{cell} = -0.287$ V
3. C
   Yes, because $E^\circ_{cell} = +2.733$ V
4. D
   No, because $E^\circ_{cell} = -2.733$ V

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1. A
   1.25 g
2. B
   1.32 g
3. C
   3.65 g
4. D
   9.50 g

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1. A
   5.57
2. B
   3.57
3. C
   4.57
4. D
   2.57

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1. A
   (a) – (iii), (b) – (iv), (c) – (ii), (d) – (i)
2. B
   (a) – (ii), (b) – (iii), (c) – (iv), (d) – (i)
3. C
   (a) – (i), (b) – (iii), (c) – (ii), (d) – (iv)
4. D
   (a) – (iv), (b) – (iii), (c) – (ii), (d) – (i)

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1. A
   The bond orders of $O_2^+, O_2, O_2^-$ and $O_2^{2-}$ are 2.5, 2, 1.5 and 1, respectively
2. B
   $C_2$ molecule has four electrons in its two degenerate $\pi$ molecular orbitals
3. C
   $H_2^+$ ion has one electron
4. D
   $O_2^+$ ion is diamagnetic

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

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1. A
   158.7 pm
2. B
   15.87 pm
3. C
   1.587 pm
4. D
   158.7 Å

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1. A
   1.3818
2. B
   0.9212
3. C
   0.4606
4. D
   0.2303

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1. A
   2.5
2. B
   498.6
3. C
   49.8
4. D
   4.9

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1. A
   1-bromo-5-chloro-4-methylhexan-3-ol
2. B
   6-bromo-2-chloro-4-methythexan-4-ol
3. C
   1-bromo-4-methyl-5-chlorohexan-3-ol
4. D
   6-bromo-4-methyl-2-chlorohexan-4-ol

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1. A
   (a), (d) only
2. B
   (a), (b), (d) only
3. C
   (b), (c), (d) only
4. D
   (a), (c), (d) only

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1. A
   63.1 u
2. B
   31.55 u
3. C
   60 u
4. D
   65 u

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1. A
   1.0385 V
2. B
   1.385 V
3. C
   0.9615 V
4. D
   1.05 V

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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
   (A) > (B) > (C)
2. B
   (C) > (B) > (A)
3. C
   (C) > (A) > (B)
4. D
   (B) > (A) > (C)

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1. A
   (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
2. B
   (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
3. C
   (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
4. D
   (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

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1. A
   +7 to +4
2. B
   +6 to +4
3. C
   +7 to +3
4. D
   +6 to +5

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1. A
   3-Methylbut-1-ene
2. B
   2-Methylbut-1-ene
3. C
   2-Methylbut-2-ene
4. D
   Pent-2-ene

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1. A
   $4.38 \times 10^{-32}$
2. B
   $1.9 \times 10^{-63}$
3. C
   $2.4 \times 10^{31}$
4. D
   $1.2 \times 10^{21}$

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

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