Phosphine is generally prepared in the laboratory - Vidyadip

MCQ

Phosphine is generally prepared in the laboratory

A
By heating phosphorus in a current of hydrogen
✓
By heating white phosphorus with aqueous solution of caustic potash
C
By decomposition of ${P_2}{H_4}$ at ${110\,^o}\,C$
D
By heating red phosphorus with an aqueous solution of caustic soda

✓

Answer

Correct option: B.

By heating white phosphorus with aqueous solution of caustic potash

b
(b) $\mathop {{P_4}}\limits_{{\rm{White}}} + 3NaOH + 3{H_2}O\, \to \,\mathop {P{H_3}}\limits_{{\rm{Phosphine}}} + 3Na{H_2}P{O_2}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

$LIST-I$ contains reactions and $LIST-II$ contains major products. Match each reaction in $LIST-I$ with one or more products in $LIST-II$ and choose the correct option.

Which of the following form dimeric halides

Which of the following alkenes is the most stable ?

The greater the energy of a photon, the

When $FeCl_3$ reacts with $K_4[Fe(CN)_6]$ then which of the following compound is formed

Which of the following order of bond length is correct?

Which of the following case the size ratio is maximum?

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason $R$.

Assertion $A$ :$[6]$ Annulene.$[8]$ Annulene and cis - $[10]$ Annulene, are respectively aromatic, not-aromatic and aromatic.

Reason $R$ : Planarity is one of the requirements of aromatic systems.

In the light of the above statements, choose the most appropriate answer from the options given below.

Which of the following has a shape different from the other three species ?

The compound of xenon with zero dipole moment is