Phosphene: Preparation, Structure, Properties and Uses

Give evidence to prove that phosphine has basic nature.

Why is the bond angle of ${\mathrm{PH}}_4^{+}$ is higher than ${\mathrm{PH}}_3$?

What is phosphine?

Holme's signals are prepared from _____.

_____ is generally prepared in the laboratory by heating white phosphorus with an aqueous solution of caustic potash.

Explain the following:

Water is added to calcium phosphide.
 

Explain the following:

Phosphine is treated with an acidified ${\mathrm{CuSO}}_4$ solution.
 

In what way can it be proved that ${\mathrm{PH}}_3$ is basic in nature?
 

Phosphine is prepared in an inert atmosphere of ${\mathrm{CO}}_2$ or ${\mathrm{H}}_2$. Give reason.

What is the formula of phosphine?
 

Which of the following gas has rotten fish smell ?

What is the colour of phosphine?

How is phosphine prepared?

What happens when white phosphorous is heated with concentrated$\mathrm{NaOH}$solution?

How do you show that ${\mathrm{PH}}_3$ is basic in nature?

On hydrolysis, ${\mathrm{P}}_2{\mathrm{O}}_3$ forms:

Which one of the following forms vortex ring?

Pure phosphine is not combustile while impure phosphine is combustile this is due to presence of -

Pure phosphine is not combustile while impure phosphine is combustible this is due to presence of -

Which is incorrect statement ?