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Question

The unbalanced chemical reactions given in List - I show missing reagent or condition (?) which are provided in List - II. Match List - I with List - II and select the correct answer using the code given below the lists:
ListIListII(P) PbO2+H2SO4?(1) NOPbSO4+O2+other product (Q) Na2S2O3+H2O?(2) I2NaHSO4+other product (R) N2H4?(3) WarmN2+other product (S) XeF2?Xe(4) Cl2+other product

A
P:4, Q:2, R:3, S:1
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B
P:3, Q:2, R:1, S:4
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C
P:1, Q:4, R:2, S:3
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D
P:3, Q:4, R:2, S:1
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Solution

The correct option is D P:3, Q:4, R:2, S:1
(P) PbO2+H2SO4ΔPbSO4+O2+2H2O
Other product = 2H2O ? = Δ
(Q) Na2S2O3+5H2O4Cl22NaHSO4+8HCI
Other product = 8 HCl
? = Cl2
(R) N2H4+2l2N2+4HI
? = I2
(S) XeF2+NOXe+NOF
Other Product = NOF
? = NO
Hence answer is (D)

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