Allotropes of Phosphorus

Q.

Sulphuryl chloride ${\mathrm{SO}}_2{\mathrm{Cl}}_2$reacts with white phosphorus ${\mathrm{P}}_4$ to give-------------------?

Q.

Name the compound with all bond angles that are exactly 109 degree 28.

Q.

Which phosphorus is used in matchstick?

Q. Which of the following chemical formula is correct?

1. $Na{Cl}_2$
2. $KCl$
3. $Na{Cl}_3$
4. $K{Cl}_4$

Q.

$P_4$ (white phosphorus) when treated with thionyl chloride produces phosphorus ___. On the other hand if $P_4$ (white phosphorus) is treated with sulphuryl chloride we get phosphorus ___.

Q. Choose the correct options for compounds.

1. Have definite composition
2. Formed by simple mixing
3. Retains the properties of original constituents
4. Constituents get separated by chemical processes

Q.

White phosphorus can be separated from red phosphorus by:

1. Sublimation

2. Distillation

3. Dissolving in $C{S}_2$

4. Heating with alkali solution

Q.

In which process iron is used as a catalyst?

1. The Ostwalds process for the manufacture of Nitric Acid.

2. The Contact process for the manufacture of Sulphuric Acid.

3. The Haber process for the manufacture of Ammonia.

4. The Bosch process for the manufacture of Hydrogen.

Q.

Observe the reactions given below:​

$2Mg$ (s) +$O_2$ (g) $\to$ A​

CuO (s) + $2HCl$ (aq) $\to$ B + $H_{2}O$​ (l)

$S{O}_2$ (g) + $H_{2}O$ (l) $\to$ C​

$C{O}_2$ (g) + 2NaOH (aq) $\to$ D +$H_{2}O$ ​(l)

Which of the following are the correct options?

1. C will have pH value greater than 7.
2. A will turn phenolphthalein solution pink to colourless.
3. B will have a pH value below 7.
4. D will turn blue litmus to red.