Build a question paper in 60 seconds.

1. A
   3 m, 0.25 m
2. B
   0.25 m, 3 m
3. C
   2.5 m, 0.3 m
4. D
   0.3 m, 2.5 m

Tap an option to check your answer.

1. A
   $\frac{1}{2\pi}\sqrt{\frac{K}{4M}}$
2. B
   $\frac{1}{2\pi}\sqrt{\frac{4K}{M}}$
3. C
   $\frac{1}{2\pi}\sqrt{\frac{K}{7M}}$
4. D
   $\frac{1}{2\pi}\sqrt{\frac{7K}{M}}$

Tap an option to check your answer.

1. A
   For all wavelengths, intensity is same.
2. B
   For shorter wavelengths, intensity is more.
3. C
   For longer wavelengths, intensity is less.
4. D
   All wavelengths are emitted by a black body.

Tap an option to check your answer.

1. A
   $5\pi$
2. B
   $4\pi$
3. C
   $2.5\pi$
4. D
   $2\pi$

Tap an option to check your answer.

1. A
   $3.1\times10^{-2}\,\text{mol L}^{-1}$
2. B
   $4.5\times10^{-3}\,\text{mol L}^{-1}$
3. C
   $9.0\times10^{-2}\,\text{mol L}^{-1}$
4. D
   $1.2\times10^{-3}\,\text{mol L}^{-1}$

Tap an option to check your answer.

1. A
   $-430.4\,\text{kJ}$
2. B
   215.2 kJ
3. C
   645.6 kJ
4. D
   $-860.8\,\text{kJ}$

Tap an option to check your answer.

1. A
   $8.20\,\text{kJ mol}^{-1}$
2. B
   $10.25\,\text{kJ mol}^{-1}$
3. C
   $13.80\,\text{kJ mol}^{-1}$
4. D
   $17.20\,\text{kJ mol}^{-1}$

Tap an option to check your answer.

1. A
   $\text{C}_{2}\text{H}_{5}\text{Cl}$
2. B
   (tertiary alkyl halide shown)
3. C
   $\text{C}_{6}\text{H}_{5}\text{Cl}$
4. D
   $\text{CH}_{3}\text{CH}_{2}\text{CH}_{2}\text{Cl}$

Tap an option to check your answer.

1. A
   $2S^{2}$
2. B
   $3S^{3}$
3. C
   $4S^{3}$
4. D
   $S^{2}$

Tap an option to check your answer.

1. A
   Bronze
2. B
   Steel
3. C
   Brass
4. D
   Duralumin

Tap an option to check your answer.

1. A
   $1.8066\times10^{23}$ octahedral, $3.6132\times10^{23}$ tetrahedral
2. B
   $3.6132\times10^{23}$ octahedral, $1.8066\times10^{23}$ tetrahedral
3. C
   $1.8066\times10^{23}$ octahedral, $1.8066\times10^{23}$ tetrahedral
4. D
   $3.6132\times10^{23}$ octahedral, $3.6132\times10^{23}$ tetrahedral

Tap an option to check your answer.

1. A
   $63.18\,\text{g mol}^{-1}$
2. B
   $55.85\,\text{g mol}^{-1}$
3. C
   $58.44\,\text{g mol}^{-1}$
4. D
   $74.92\,\text{g mol}^{-1}$

Tap an option to check your answer.

1. A
   $+2$
2. B
   $-2$
3. C
   $-1$
4. D
   $0$

Tap an option to check your answer.

1. A
   $\text{CH}_{3}\text{CH}_{2}\text{N}(\text{CH}_{3})_{2}\text{X}^{-}$ (diethyldimethylammonium halide)
2. B
   $\text{CH}_{3}\text{CH}_{2}\text{NH}_{2}$
3. C
   $(\text{CH}_{3})_{4}\text{N}^{+}\text{OH}^{-}$
4. D
   $\text{C}_{2}\text{H}_{5}\text{NH}_{3}^{+}\text{Cl}^{-}$

Tap an option to check your answer.

1. A
   $11.2\,\text{dm}^{3}$
2. B
   $11.8\,\text{dm}^{3}$
3. C
   $22.4\,\text{dm}^{3}$
4. D
   $5.6\,\text{dm}^{3}$

Tap an option to check your answer.

1. A
   2-Iodo-2-methylbutane
2. B
   2-Iodo-3-methylbutane
3. C
   2-Iodo-3-methylbutane
4. D
   3-Iodopentane

Tap an option to check your answer.

1. A
   8 minutes
2. B
   12 minutes
3. C
   16 minutes
4. D
   20 minutes

Tap an option to check your answer.

1. A
   Four
2. B
   Three
3. C
   Two
4. D
   One

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A
   $\Delta H<\Delta U$
2. B
   $\Delta H>\Delta U$
3. C
   $\Delta H=\Delta U$
4. D
   $\Delta H=0$

Tap an option to check your answer.

1. A
   Nanotubes
2. B
   Fibres
3. C
   Thin films
4. D
   Quantum dots

Tap an option to check your answer.

1. A
   2.5
2. B
   3.5
3. C
   4.5
4. D
   5.5

Tap an option to check your answer.

1. A
   16 g
2. B
   24 g
3. C
   32 g
4. D
   48 g

Tap an option to check your answer.

1. A
   Nylon 6
2. B
   Polyacrylonitrile
3. C
   Bakelite
4. D
   Terylene

Tap an option to check your answer.

1. A
   2.4 g
2. B
   2.1 g
3. C
   2.7 g
4. D
   1.8 g

Tap an option to check your answer.