p-Block elementsHard
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 :
Options
A.P → 4, Q → 2, R → 3, S → 1
B.P → 3, Q → 2, R → 1, S → 4
C.P → 1, Q → 4, R → 2, S → 3
D.P → 3, Q → 4, R → 2, S → 1
Solution
(P) PbO2 + H2SO4 
PbSO4 + O2 + 2H2O
Other product = 2H2O
? = ᐃ
(Q) Na2S2O3 + 5H2O
2NaHSO4 + 8 HCl
other product = 8 HCl
? = Cl2
(R) N2H4 + 2I2 → N2 + 4HI
? = I2
Other product = 4HI
(S) XeF2 + NO → Xe + NOF
Other product = NOF
? = NO
Hence answer is (D)
PbSO4 + O2 + 2H2OOther product = 2H2O
? = ᐃ
(Q) Na2S2O3 + 5H2O
2NaHSO4 + 8 HClother product = 8 HCl
? = Cl2
(R) N2H4 + 2I2 → N2 + 4HI
? = I2
Other product = 4HI
(S) XeF2 + NO → Xe + NOF
Other product = NOF
? = NO
Hence answer is (D)
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