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Match elements with the reagent or product used to detect them in Lassaigne's test

This type of question, asked 2 times: 2021 Paper 6, 6 Apr 2023. All 2 questions below, oldest first.

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  1. Question 1

    2021 Paper 6

    46
    Match List-I with List-II List-I LIST-II Test/Reagents/Observation(s) species detected (A) Lassaigne's Test (i) Carbon (B) Cu(II)Cu(II) oxide (ii) Sulphur (C) Silver nitrate (iii) N, S, P, and halogen (D) The sodium fusion extract (iv) Halogen Specifically gives black precipitate with acetic acid and lead acetate The correct match is:

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  2. Question 2

    6 Apr 2023

    32
    Match List I with List II
    List I (Element detected)List II (Reagent used / product formed)
    AA
    		NitrogenI.
    Na2[Fe(CN)5NO]Na_{2}\left\lbrack Fe(CN)_{5}NO \right\rbrack
    BB
    		SulphurII.
    AgNO3AgNO_{3}
    CC
    		PhosphorousIII.
    Fe4[Fe(CN)6]3Fe_{4}\left\lbrack Fe(CN)_{6} \right\rbrack_{3}
    DD
    		HalogenIV.
    (NH4)2MoO4\left( NH_{4} \right)_{2}MoO_{4}
    Choose the correct answer from the options given below:

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