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Q.

(A) : Nitrogen in hydrazine, hydroxylamine cannot be detected by 'Lassaign's test'
(R) : In the Lassaigne's extraction preparation with N2H4 and NH2OH, NaCN cannot be
formed due to absence of carbon in these compounds.

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An Intiative by Sri Chaitanya

a

A and R are true, R explains A

b

A and R are true, R does not explain A

c

A is true, but R is false

d

A is false, but R is true

answer is A.

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Detailed Solution

  • For the detection of nitrogen, halogens, sulphur, and phosphorous, Lassign's test is utilised. By fusing the molecule with sodium metal, the covalently bound components in the complex are transformed into ions. Carbon and nitrogen present in the compound gives NaCN,since there is no C in Hydrazine, it cannot form NaCN.
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(A) : Nitrogen in hydrazine, hydroxylamine cannot be detected by 'Lassaign's test'(R) : In the Lassaigne's extraction preparation with N2H4 and NH2OH, NaCN cannot beformed due to absence of carbon in these compounds.