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1. A
   $\frac{\lambda}{2\pi}(\phi)$
2. B
   $\frac{\lambda}{2\pi}\!\left(\phi + \frac{\pi}{2}\right)$
3. C
   $\frac{2\pi}{\lambda}\!\left(\phi - \frac{\pi}{2}\right)$
4. D
   $\frac{2\pi}{\lambda}(\phi)$

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

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1. A
   40 V
2. B
   $40\sqrt{2}$ V
3. C
   80 V
4. D
   160 V

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1. A
   1.2 mm
2. B
   2.4 mm
3. C
   1.2 cm
4. D
   2.4 cm

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1. A
   $\frac{2}{\sqrt{3}} \times 10^8$ m/s
2. B
   $1.5 \times 10^8$ m/s
3. C
   $2.1 \times 10^8$ m/s
4. D
   $2.5 \times 10^8$ m/s

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

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

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1. A
   +4
2. B
   +6
3. C
   +8
4. D
   +5

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1. A
   1.780 kJ
2. B
   $-1.125$ kJ
3. C
   3.234 kJ
4. D
   $-4.988$ kJ

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1. A
   2.30
2. B
   12.6
3. C
   11.7
4. D
   3.2

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1. A
   $\text{Na}_2\text{CO}_3$
2. B
   $\text{NH}_4\text{NO}_3$
3. C
   $\text{NH}_4\text{CN}$
4. D
   $\text{KCN}$

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1. A
   $\text{Fe}^{3+}$
2. B
   $\text{Fe}^{2+}$
3. C
   $\text{Cu}^{2+}$
4. D
   $\text{Cu}^+$

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1. A
   $4.25\text{ g NH}_3$
2. B
   $1.8\text{ g H}_2\text{O}$
3. C
   $2.8\text{ g N}_2$
4. D
   $4.4\text{ g CO}_2$

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1. A
   $[\text{Co(NH}_3)_5\text{H}_2\text{O]I}_3$
2. B
   $[\text{Co(NH}_3)_5\text{CO}_3\text{]Cl}$
3. C
   $[\text{Ni(CN)}_4]^{2-}$
4. D
   $[\text{Co(NH}_3)_3(\text{NO}_2)_3]$

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1. A
   33.33%
2. B
   66.67%
3. C
   50%
4. D
   75%

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1. A
   $-\frac{\Delta[\text{N}_2]}{\Delta t} = -\frac{1}{3}\frac{\Delta[\text{H}_2]}{\Delta t} = \frac{1}{2}\frac{\Delta[\text{NH}_3]}{\Delta t}$
2. B
   $-\frac{\Delta[\text{N}_2]}{\Delta t} = -\frac{1}{3}\frac{\Delta[\text{H}_2]}{\Delta t} = +\frac{1}{2}\frac{\Delta[\text{NH}_3]}{\Delta t}$
3. C
   $-\frac{\Delta[\text{N}_2]}{\Delta t} = +\frac{1}{3}\frac{\Delta[\text{H}_2]}{\Delta t} = -\frac{1}{2}\frac{\Delta[\text{NH}_3]}{\Delta t}$
4. D
   $+\frac{\Delta[\text{N}_2]}{\Delta t} = -\frac{1}{3}\frac{\Delta[\text{H}_2]}{\Delta t} = +\frac{1}{2}\frac{\Delta[\text{NH}_3]}{\Delta t}$

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1. A
   $\text{K}_3[\text{Al(C}_2\text{O}_4)_3]$
2. B
   Potassium trioxalatoaluminate(III)
3. C
   Aluminium potassium oxalate
4. D
   $\text{KAl(C}_2\text{O}_4)_2$

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1. A
   Coupling of aryl and alkyl halides with Na
2. B
   Reduction of alkyl halide with Na
3. C
   Coupling of two alkyl halides with Na
4. D
   Coupling of two aryl halides with Na

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1. A
   Haemoglobin in blood
2. B
   Chlorophyll in plants
3. C
   Starch in food
4. D
   DNA in nucleus

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1. A
   Amylase, Lysozyme & Lingual Lipase
2. B
   Pepsin & HCl
3. C
   Trypsin
4. D
   Lactase

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1. A
   210.2 g/mol
2. B
   100 g/mol
3. C
   58 g/mol
4. D
   120 g/mol

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1. A
   $1 \times 10^{-5}$
2. B
   REVIEW: answer not in options for the question as extracted
3. C
   REVIEW
4. D
   REVIEW

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1. A
   Carbocation
2. B
   Carbanion
3. C
   Free radical
4. D
   Ion pair

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1. A
   $1.95\text{ K kg mol}^{-1}$
2. B
   0.52
3. C
   3.71
4. D
   2.60

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1. A
   $\Delta H_{mix} = 0$ and $\Delta V_{mix} = 0$
2. B
   $\Delta H_{mix} > 0$
3. C
   $\Delta V_{mix} < 0$
4. D
   $\Delta S_{mix} = 0$

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