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1. A
   Pentacarbonyl iron (0)
2. B
   Trioxalatocobaltate (III) ion
3. C
   Sodium hexanitrocobaltate (III)
4. D
   Tetracyanonickelate (II) ion

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1. A
   Nanoparticles
2. B
   Thin films
3. C
   Quantum dots
4. D
   Nanowires

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1. A
   Cl$_2$
2. B
   N$_2$
3. C
   O$_2$
4. D
   H$_2$

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

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1. A
   $1.3 \times 10^{-1}\,\Omega\,\text{cm}^{-1}$
2. B
   $1.5 \times 10^{-4}\,\Omega^{-1}\,\text{cm}^{-1}$
3. C
   $1.7 \times 10^{-4}\,\Omega\,\text{cm}^{-1}$
4. D
   $1.0 \times 10^{-4}\,\Omega^{-1}\,\text{cm}^{-1}$

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1. A
   Vulcanized
2. B
   Buna-S
3. C
   Terylene
4. D
   Polystyrene

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1. A
   Five
2. B
   Two
3. C
   Eight
4. D
   Four

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1. A
   +6
2. B
   +4
3. C
   -4
4. D
   -6

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1. A
   Insulation of electric cables.
2. B
   Manufacture of toys.
3. C
   Submarine cable insulation.
4. D
   Producing extruded films.

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1. A
   Propanal
2. B
   Propanone
3. C
   Butanal
4. D
   Butanone

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

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1. A
   $160\,\text{g mol}^{-1}$
2. B
   $172\,\text{g mol}^{-1}$
3. C
   $186\,\text{g mol}^{-1}$
4. D
   $198\,\text{g mol}^{-1}$

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1. A
   2-Methylpentan-3-ol
2. B
   2-Methylpent-2-ene
3. C
   4-Methylpent-3-ene
4. D
   4-Methylpentan-3-ol

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1. A
   Ethyl chloride
2. B
   Ethylene dichloride
3. C
   Ethanoyl chloride
4. D
   Ethylidene dichloride

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1. A
   CH$_4$, CCl$_4$
2. B
   BF$_3$, NH$_3$
3. C
   CO, CO$_2$
4. D
   NO$_2$, CO$_2$

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1. A
   Chloroethyne
2. B
   3-Chlorobut-1-yne
3. C
   1-Chloropent-2-yne
4. D
   4-Chloropent-2-yne

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1. A
   $2.68 \times 10^{-2}\,\text{min}^{-1}$
2. B
   $5.36 \times 10^{-2}\,\text{min}^{-1}$
3. C
   $1.34 \times 10^{-2}\,\text{min}^{-1}$
4. D
   $8.1 \times 10^{-2}\,\text{min}^{-1}$

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1. A
   Iodine
2. B
   Iron
3. C
   Zinc
4. D
   Sodium

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1. A
   1-Methoxy-3,3-dimethylcyclobutane
2. B
   3-Methoxy-1,1-dimethylcyclobutane
3. C
   3,3-Dimethylcyclobutoxymethane
4. D
   1-Methoxy-3-isoproylbutane

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1. A
   Dipeptide
2. B
   Tripeptide
3. C
   Tetrapeptide
4. D
   Pentapeptide

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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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