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F cannot be tested by "Lassaigne’s test" because

In which of the following compounds, nitrogen cannot be tested by Lassaigne's test?

The presence of auxins in a solution could be tested by (a) Avena sativa stem tip test (b) Carbon tetrachloride test (c) Iodine test (d) Defoliation test

Widal Test is carried out to test :

________tests are carried out to test for sensitivity to allergens .

Which compound does not give positive test in Lassaigne's test for nitrogen ?

Give the chemistry of sliver mirror test and Fehling solution test for glucose.

The probability that a teacher will give an unannounced test during any class meeting is 1/5. If a student is absent twice, find the probability that the student will miss at least one test.

Unknown compound (A) C_(5)H_(10)O give positive test with 2,4 - DNP but negative test with Tollen's reagent. It also give yellow precipitate with I_(2)//NaOH . (A) is :