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Important questions on Phosphorus Allotropic Forms

Which product will obtained in the following reaction?
Reaction:

A
B
C
D
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 Which of the following phosphorus is the most reactive?

A
Red phosphorus
B
White phosphorus
C
Scarlet phosphorus
D
Violet phosphorus
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Which of the following   most stable?

A
Red
B
White
C
Black
D
All of these
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When a mixture of carbon monoxide and chlorine is exposed to sunlight the product formed is:

A
carbon tetrachloride
B
phosgene
C
phosphine
D
carbon chloride
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Assertion

Red phosphorous on heating changes its colour to black.

Reason

Black phosphorus contain units.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect
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