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1. A
   Liquid as solute and liquid as solvent.
2. B
   Liquid as solute and solid as solvent.
3. C
   Solid as solute and liquid as solvent.
4. D
   Gas as solute and liquid as solvent.

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1. A
   Internal energy
2. B
   Work
3. C
   Entropy
4. D
   Enthalpy

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1. A
   [A] and [B] both are doubled
2. B
   [A] is doubled and [B] is kept constant
3. C
   [B] is doubled and [A] is halved
4. D
   [A] is kept constant and [B] is halved

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1. A
   H$_2$C=CH-CH$_2$-OH
2. B
   CH$_3$-CH=CH-CH$_2$-OH
3. C
   Structure (c)
4. D
   Structure (d)

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1. A
   Proline
2. B
   Lysine
3. C
   Arginine
4. D
   Histidine

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1. A
   C$_6$H$_8$N
2. B
   C$_6$H$_{10}$N
3. C
   C$_6$H$_{12}$N
4. D
   C$_6$H$_{13}$N

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1. A
   0
2. B
   1
3. C
   -1
4. D
   2

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1. A
   Malonic acid
2. B
   Caproic acid
3. C
   Glutaric acid
4. D
   Succinic acid

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1. A
   Ba
2. B
   Be
3. C
   K
4. D
   Mg

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1. A
   $\text{H}_3\text{O}^+_{(aq)}$
2. B
   $\text{H}_2\text{O}_{(l)}$
3. C
   $\text{Cl}^-_{(aq)}$
4. D
   $\text{HCl}_{(aq)}$

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1. A
   421 K
2. B
   234 K
3. C
   168 K
4. D
   273 K

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1. A
   5.2 J
2. B
   10.21 J
3. C
   15.00 J
4. D
   18.2 J

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1. A
   $9.77\,\text{g cm}^{-3}$
2. B
   $7.15\,\text{g cm}^{-3}$
3. C
   $8.12\,\text{g cm}^{-3}$
4. D
   $6.94\,\text{g cm}^{-3}$

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1. A
   $2.5 \times 10^{-3}\,\text{time}^{-1}$
2. B
   $5.0 \times 10^{-3}\,\text{time}^{-1}$
3. C
   $7.5 \times 10^{-3}\,\text{time}^{-1}$
4. D
   $1.25 \times 10^{-3}\,\text{time}^{-1}$

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1. A
   $8 \times 10^{-6}$
2. B
   $2 \times 10^{-2}$
3. C
   $5.6 \times 10^{-3}$
4. D
   $5.0 \times 10^{-2}$

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1. A
   Ne
2. B
   I
3. C
   S
4. D
   O

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1. A
   Cr
2. B
   Fe
3. C
   Co
4. D
   Ni

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

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1. A
   $\frac{\pi}{6}$
2. B
   $\frac{\pi}{4}$
3. C
   $\frac{\pi}{3}$
4. D
   $\frac{\pi}{2}$

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1. A
   order 1, degree 4
2. B
   order 2, degree 3
3. C
   order 2, degree 4
4. D
   order 1, degree 3

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1. A
   $\sqrt{69}$
2. B
   $\sqrt{70}$
3. C
   $\sqrt{80}$
4. D
   $\sqrt{39}$

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

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1. A
   $\frac{496}{1001}$
2. B
   $\frac{505}{1001}$
3. C
   $\frac{490}{1001}$
4. D
   $\frac{504}{1001}$

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1. A
   $\frac{4x-3}{3x-2}$
2. B
   $\frac{3x-2}{4x+3}$
3. C
   $\frac{3x-4}{4x-2}$
4. D
   $\frac{2x+3}{4x-3}$

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1. A
   $n=20$ and $\text{Re}(z) = -10$
2. B
   $n=40$ and $\text{Re}(z) = -10$
3. C
   $n=40$ and $\text{Re}(z) = 10$
4. D
   $n=20$ and $\text{Re}(z) = 10$

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