Build a question paper in 60 seconds.

1. A
   $-90\,\text{kJ}$
2. B
   $-100\,\text{kJ}$
3. C
   $235.6\,\text{kJ}$
4. D
   $33.56\,\text{kJ}$

Tap an option to check your answer.

1. A
   0.383 minute
2. B
   7.53 minute
3. C
   8.73 minute
4. D
   23.1 minute

Tap an option to check your answer.

1. A
   $23.5\,\text{g}\,\text{cm}^{-3}$
2. B
   $21.2\,\text{g}\,\text{cm}^{-3}$
3. C
   $17.5\,\text{g}\,\text{cm}^{-3}$
4. D
   $19.7\,\text{g}\,\text{cm}^{-3}$

Tap an option to check your answer.

1. A
   100 J
2. B
   $-200$ J
3. C
   200 J
4. D
   $-300$ J

Tap an option to check your answer.

1. A
   rate of slowest step.
2. B
   rate of fastest step.
3. C
   average rate of various steps.
4. D
   instantaneous rate of fast step.

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A
   $\text{NaCl}$
2. B
   $\text{KNO}_3$
3. C
   $\text{NaNO}_3$
4. D
   $\text{Na}_2\text{SO}_4$

Tap an option to check your answer.

1. A
   $S = \left(\frac{K_{sp}}{108}\right)^{1/5}$
2. B
   $S = (108 \times K_{sp})^{1/5}$
3. C
   $S = \left(\frac{K_{sp}}{27}\right)^{1/5}$
4. D
   $S = (27 \times K_{sp})^{1/5}$

Tap an option to check your answer.

1. A
   $\text{Cl}_2(\text{g})$
2. B
   $\text{Na(s)}$
3. C
   $\text{O}_2(\text{g})$
4. D
   $\text{H}_2(\text{g})$

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A
   Law of Constant proportion.
2. B
   Law of Conservation of mass.
3. C
   Law of Multiple proportion.
4. D
   Avogadro's law.

Tap an option to check your answer.

1. A
   1.66 V
2. B
   $-1.66$ V
3. C
   0.0533 V
4. D
   1.14 V

Tap an option to check your answer.

1. A
   $0.982\,\text{dm}^3$
2. B
   $1.3\,\text{dm}^3$
3. C
   $1.5\,\text{dm}^3$
4. D
   $1.7\,\text{dm}^3$

Tap an option to check your answer.

1. A
   $265\,\text{g}\,\text{mol}^{-1}$
2. B
   $175\,\text{g}\,\text{mol}^{-1}$
3. C
   $105\,\text{g}\,\text{mol}^{-1}$
4. D
   $195\,\text{g}\,\text{mol}^{-1}$

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A
   n-Butyl alcohol
2. B
   sec-Butyl alcohol
3. C
   iso-Butyl alcohol
4. D
   tert-Butyl alcohol

Tap an option to check your answer.

1. A
   n-Butyl > sec-Butyl > iso-Butyl > tert-Butyl
2. B
   tert-Butyl > iso-Butyl > sec-Butyl > n-Butyl
3. C
   iso-Butyl > n-Butyl > sec-Butyl > tert-Butyl
4. D
   n-Butyl > iso-Butyl > sec-Butyl > tert-Butyl

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A
   $\hat{u} = \frac{\hat{a}+\hat{b}}{|\hat{a}+\hat{b}|}$ and $M = (1+\hat{a}\cdot\hat{b})^{1/2}$
2. B
   $\hat{u} = \frac{\hat{a}-\hat{b}}{|\hat{a}-\hat{b}|}$ and $M = (1+\hat{a}\cdot\hat{b})^{1/2}$
3. C
   $\hat{u} = \frac{\hat{a}+\hat{b}}{|\hat{a}+\hat{b}|}$ and $M = (1+2\hat{a}\cdot\hat{b})^{1/2}$
4. D
   $\hat{u} = \frac{\hat{a}-\hat{b}}{|\hat{a}-\hat{b}|}$ and $M = (1-2\hat{a}\cdot\hat{b})^{1/2}$

Tap an option to check your answer.

1. A
   $\vec{r}\cdot(2\hat{i}+7\hat{j}+3\hat{k})=-9$
2. B
   $\vec{r}\cdot(\hat{i}+2\hat{j}+2\hat{k})=9$
3. C
   $\vec{r}\cdot(3\hat{i}+2\hat{j}-2\hat{k})=9$
4. D
   $\vec{r}\cdot(2\hat{i}-7\hat{j}-3\hat{k})=-9$

Tap an option to check your answer.

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

Tap an option to check your answer.

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

Tap an option to check your answer.

1. A
   0
2. B
   6
3. C
   12
4. D
   18

Tap an option to check your answer.

1. A
   $\frac{1}{6}\,\text{cm/sec}$
2. B
   $\frac{1}{36}\,\text{cm/sec}$
3. C
   $6\,\text{cm/sec}$
4. D
   $36\,\text{cm/sec}$

Tap an option to check your answer.