1. A
   B, C, D, E are correct
2. B
   A, B, C, D are correct
3. C
   A, B, C, E are correct
4. D
   A, C, D, E are correct

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1. A
   $H_2C=CH-CH=CH_2$
2. B
   $H_2C=C(Cl)-CH=CH_2$
3. C
   $H_2C=CH-C\equiv CH$
4. D
   $H_2C=C(CH_3)-CH=CH_2$

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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
   $\sigma 1s < \sigma^*1s < \sigma 2s < \sigma^*2s < (\pi 2p_x = \pi 2p_y) < \sigma 2p_z < (\pi^*2p_x = \pi^*2p_y) < \sigma^*2p_z$
2. B
   $\sigma 1s < \sigma^*1s < \sigma 2s < \sigma^*2s < \sigma 2p_z < (\pi 2p_x = \pi 2p_y) < (\pi^*2p_x = \pi^*2p_y) < \sigma^*2p_z$
3. C
   $\sigma 1s < \sigma^*1s < \sigma 2s < \sigma^*2s < \sigma 2p_z < \sigma^*2p_z < (\pi 2p_x = \pi 2p_y) < (\pi^*2p_x = \pi^*2p_y)$
4. D
   $\sigma 1s < \sigma^*1s < \sigma 2s < \sigma^*2s < (\pi 2p_x = \pi 2p_y) < (\pi^*2p_x = \pi^*2p_y) < \sigma 2p_z < \sigma^*2p_z$

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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 but 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
   Potassium trioxalatoaluminate (III)
2. B
   Diamminechloridonitrito-N-platinum (II)
3. C
   Pentaamminecarbonatocobalt (III) chloride
4. D
   Triamminetriaquachromium (III) chloride

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

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1. A
   O
2. B
   F
3. C
   N
4. D
   Na

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1. A
   16
2. B
   32
3. C
   30
4. D
   18

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1. A
   $TlCl_3 > TlCl$
2. B
   $InI_3 > InI$
3. C
   $AlCl > AlCl_3$
4. D
   $TlI > TlI_3$

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1. A
   $CH_3CONH_2 \xrightarrow{Br_2/KOH}$ Product
2. B
   $CH_3CN \xrightarrow[(ii) H_3O^+]{(i) LiAlH_4}$ Product
3. C
   $CH_3NC \xrightarrow[(ii) H_3O^+]{(i) LiAlH_4}$ Product
4. D
   $CH_3CONH_2 \xrightarrow[(ii) H_3O^+]{(i) LiAlH_4}$ Product

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1. A
   $NH_3$
2. B
   $H_2O$
3. C
   $BF_3$
4. D
   $OH^-$

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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
   (structure 3)
4. D
   (structure 4)

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1. A
   11, 2, 0
2. B
   12, 3, 0
3. C
   11, 3, 1
4. D
   12, 2, 1

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1. A
   Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen
2. B
   Hydrolysis of sugar catalysed by $H^+$ ions
3. C
   Decomposition of ozone in presence of nitrogen monoxide
4. D
   Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron

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1. A
   Decrease by a factor of nine
2. B
   Increase by a factor of six
3. C
   Increase by a factor of nine
4. D
   Increase by a factor of three

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

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1. A
   1.12 g
2. B
   1.76 g
3. C
   2.64 g
4. D
   1.32 g

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1. A
   $n_m = 2l + 1$
2. B
   $n_m = 2(l + 1)$
3. C
   $n_m = 2l^2 + 1$
4. D
   $n_m = l + 2$

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1. A
   $1.34\ cm^{-1}$
2. B
   $3.28\ cm^{-1}$
3. C
   $1.26\ cm^{-1}$
4. D
   $3.34\ cm^{-1}$

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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 true but Statement II is false
4. D
   Statement I is false but Statement II is true

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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
   First ionisation enthalpy
2. B
   Enthalpy of atomization
3. C
   Hydration energy
4. D
   Second ionisation enthalpy

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