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1. A
   Tetraamminedibromoplatinum (IV) bromide
2. B
   Potassium trioxalatoaluminate (III)
3. C
   Pentaaquaisothiocyanatoiron (III) ion
4. D
   Pentaammineaquacobalt (III) iodide

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1. A
   $2428.9\,\text{dm}^{3}$
2. B
   $2656.9\,\text{dm}^{3}$
3. C
   $2814.9\,\text{dm}^{3}$
4. D
   $1897.8\,\text{dm}^{3}$

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1. A
   $n\,\text{MgI}$ and $n\,\text{CH}_4$
2. B
   $\frac{n}{2}\text{C}_2\text{H}_6$
3. C
   $n\,\text{CH}_3\text{OH}$ and $n\,\text{MgI}$
4. D
   $n\,\text{CH}_4$ and $n\,\text{MgI(OH)}$

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1. A
   $\text{O}^{2-}$ and $\text{Na}^{+}$
2. B
   $\text{O}^{2-}$ and $\text{F}^{-}$
3. C
   $\text{K}$ and $\text{Ca}^{2+}$
4. D
   $\text{Ar}$ and $\text{Al}^{3+}$

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1. A
   Phenol and ethanol
2. B
   Phenol and methanol
3. C
   Pyrogallol and methanol
4. D
   Phloroglucinol and ethanol

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1. A
   0.4 m
2. B
   0.8 m
3. C
   0.6 m
4. D
   0.3 m

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1. A
   Nucleophilic addition
2. B
   Elimination
3. C
   Disproportionation
4. D
   Decomposition

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

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1. A
   $\left(\frac{3}{4},-\frac{1}{4},\frac{11}{4}\right)$
2. B
   $\left(\frac{5}{4},-\frac{3}{4},\frac{7}{4}\right)$
3. C
   $\left(-\frac{3}{4},-\frac{1}{4},\frac{11}{4}\right)$
4. D
   $\left(-\frac{5}{4},-\frac{3}{4},-\frac{7}{4}\right)$

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1. A
   $\frac{8}{9}$
2. B
   $\frac{\sqrt{17}}{9}$
3. C
   $\frac{1}{9}$
4. D
   $\frac{4\sqrt{5}}{9}$

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1. A
   $-\frac{\pi}{12},\frac{\pi}{6}$
2. B
   $-\frac{\pi}{6},-\frac{\pi}{12}$
3. C
   $\frac{\pi}{6},\frac{\pi}{12}$
4. D
   $\frac{\pi}{6},-\frac{\pi}{12}$

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1. A
   70
2. B
   100
3. C
   110
4. D
   130

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1. A
   $x^{2}+4x+6$
2. B
   $x^{4}+x^{2}+6$
3. C
   $x^{2}+x+6$
4. D
   $x^{4}+4x^{2}+6$

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1. A
   0.08660243
2. B
   0.0008660243
3. C
   0.8660243
4. D
   0.008660243

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1. A
   $\frac{27}{8}$ grams
2. B
   $\frac{8}{14}$ grams
3. C
   $\frac{16}{3}$ grams
4. D
   $\frac{16}{9}$ grams

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1. A
   $\frac{1}{2}$
2. B
   2
3. C
   1
4. D
   0

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

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1. A
   $\tan^{-1}\frac{15}{8}$
2. B
   $\tan^{-1}\frac{7}{8}$
3. C
   $\tan^{-1}\frac{3}{4}$
4. D
   $\tan^{-1}\frac{1}{4}$

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

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1. A
   $\frac{17}{29}$
2. B
   $\frac{496}{729}$
3. C
   $\frac{233}{729}$
4. D
   $\frac{491}{729}$

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1. A
   $\left(\frac{30}{11},-\frac{5}{11}\right)$ and $\left(\frac{20}{11},\frac{15}{11}\right)$
2. B
   $\left(-\frac{30}{11},\frac{5}{11}\right)$ and $\left(-\frac{20}{11},\frac{15}{11}\right)$
3. C
   $\left(\frac{30}{11},\frac{5}{11}\right)$ and $\left(\frac{20}{11},-\frac{15}{11}\right)$
4. D
   $\left(-\frac{30}{11},\frac{5}{11}\right)$ and $\left(-\frac{20}{11},-\frac{15}{11}\right)$

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1. A
   $x^{2}-a^{2}=3$
2. B
   $x^{2}+a^{2}=3$
3. C
   $x^{2}-a^{2}=2$
4. D
   $x^{2}+a^{2}=2$

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

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1. A
   $\tan\left(1+\log\tan\frac{x}{2}\right)+c$
2. B
   $\tan(1+\log(\tan x))+c$
3. C
   $\tan\left(\log\tan\frac{x}{2}\right)+c$
4. D
   $\tan\left(\tan\frac{x}{2}\right)+c$

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1. A
   $2\sqrt{\frac{10}{3}}$
2. B
   $2\sqrt{6}$
3. C
   $\sqrt{\frac{45}{3}}$
4. D
   $\sqrt{6}$

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