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Important questions on Phosphine

One mole of calcium phosphide on reaction with excess of water gives__________.

A
One mole of phosphine
B
Two moles of phosphoric acid
C
Two moles of phosphine
D
One mole of phosphorous penta-oxide
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 Phosphine is prepared by the reaction of :

A
and
B
and
C
and
D
and
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Phosphine is obtained by the reaction when_________.

This question has multiple correct options
A
white phosphorous is heated with
B
reacts with water
C
red phosphorus is heated with
D
phosphorus is heated in current of hydrogen
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Phosphine cannot be prepared by which of the following rreaction?

A
White P is heated with NaOH
B
Red P is heated with NaOH
C
is heated with water
D
Phosphorus trioxide is boiled with water
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is :

A
Dehydration reaction
B
Oxidation reaction
C
Dispropportionation reaction
D
Dephosphorelation reaction
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One mole of calcium phosphide on reaction with an excess of water gives:

A
one mole of phosphine
B
two moles of phosphoric acid
C
two moles of phosphine
D
one mole of phosphorous oxide
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Phosphine is not evloved when :

A
White phosphorus is boiled with a strong

solution of

Ba
B
Phosphorus acid is heated
C
Calcium hypophosphite is heated
D
Metaphosphoric acid is heated
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