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1. A
   $-173.7\,kJ$
2. B
   $-225.3\,kJ$
3. C
   $-100.2\,kJ$
4. D
   $-290.8\,kJ$

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1. A
   $27419.3\,cm^{-1}$
2. B
   $109677.0\,cm^{-1}$
3. C
   $12064.5\,cm^{-1}$
4. D
   $82257.8\,cm^{-1}$

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1. A
   o-nitrophenol
2. B
   p-nitrophenol
3. C
   2,4,6-trinitrophenol
4. D
   Mixture of ortho and para-nitrophenol

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1. A
   Structure of material surface
2. B
   Crystal structure
3. C
   Binding nature
4. D
   Particle size

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1. A
   3.0
2. B
   4.0
3. C
   5.0
4. D
   2.0

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

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1. A
   $0.74\,kJ\,mol^{-1}$
2. B
   $0.82\,kJ\,mol^{-1}$
3. C
   $0.21\,kJ\,mol^{-1}$
4. D
   $-0.44\,kJ\,mol^{-1}$

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1. A
   $KNO_3$
2. B
   $NaNO_3$
3. C
   $AgNO_2$
4. D
   $KNO_2$

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1. A
   $270\,g\,mol^{-1}$
2. B
   $260\,g\,mol^{-1}$
3. C
   $250\,g\,mol^{-1}$
4. D
   $240\,g\,mol^{-1}$

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1. A
   Methanoic acid
2. B
   Ethanoic acid
3. C
   Methanol
4. D
   Ethanol

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1. A
   $H_2(g)+Br_2(g)\longrightarrow 2HBr(g)$
2. B
   $2CO(g)+O_2(g)\longrightarrow 2CO_2(g)$
3. C
   $PCl_5(g)\longrightarrow PCl_3(g)+Cl_2(g)$
4. D
   $C(s)+2H_2O(s)\longrightarrow 2H_2(g)+CO_2(g)$

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1. A
   Ethane
2. B
   Propane
3. C
   Butane
4. D
   Hexane

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1. A
   Ammonia
2. B
   Hydrogen
3. C
   Hydrogen chloride
4. D
   Chlorine

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1. A
   2-Bromopropane
2. B
   2-Bromo-2-methylbutane
3. C
   2-Bromo-3-methylbutane
4. D
   3-Bromopentane

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1. A
   $C_2$ and $C_5$
2. B
   $C_1$ and $C_3$
3. C
   $C_1$ and $C_4$
4. D
   $C_1$ and $C_5$

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1. A
   3.87 BM
2. B
   4.90 BM
3. C
   2.84 BM
4. D
   1.73 BM

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1. A
   1-methylbut-2-en-1-amine
2. B
   Pent-3-en-2-amine
3. C
   Pent-2-en-4-amine
4. D
   4-Methylbut-2-en-4-amine

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1. A
   $6.022\times10^{23}$
2. B
   $1.204\times10^{24}$
3. C
   $9.033\times10^{23}$
4. D
   $3.011\times10^{23}$

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1. A
   Pauli's exclusion principle
2. B
   Hund's rule
3. C
   Aufbau rule
4. D
   Heisenberg uncertainty principle

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1. A
   $9.0\,mol^{-2}dm^{6}s^{-1}$
2. B
   $18.0\,mol^{-2}dm^{6}s^{-1}$
3. C
   $4.5\,mol^{-2}dm^{6}s^{-1}$
4. D
   $16.0\,mol^{-2}dm^{6}s^{-1}$

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

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1. A
   $3n$
2. B
   $6n$
3. C
   $4n$
4. D
   $n$

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1. A
   All alkali metals are silvery white.
2. B
   Density of potassium is less than sodium.
3. C
   Compounds of group-1 elements are diamagnetic.
4. D
   Melting point of group-1 elements increase down the group.

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1. A
   200 J
2. B
   232 J
3. C
   432 J
4. D
   632 J

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1. A
   Molality
2. B
   Molarity
3. C
   Mole fraction
4. D
   Percent by mass

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