pBlock ElementsII - Result Question 66

####61. The unbalanced chemical reactions given in Column I show missing reagent or condition (?) which are provided in Column II. Match Column I with Column II and select the correct answer using the codes given below the Columns.

(2013 Adv.)

Column I Column II
P. PbO2+H2SO4?PbSO4+O2+ 1. NO
Q. Na2S2O3+H2O?NaHSO4+ 2. I2
R. N2H4?N2+ other product 3. Warm
S. XeF2?Xe+ other product 4. Cl2

Codes

PQRS P Q RS

(a) 4231

(b) 3214

(c) 1423

Fill in the Blanks

Show Answer

Solution:

  1. (P) 2PbO2+2H2SO4 Warm (3) 2PbSO4+O2+2H2O

(Q) Na2S2O3+H2OCl2(4)NaHSO4+HCl

(R) N2H4I2(2)N2+Hl

(S) XeF2NO(1)Xe+NOF

Thus, P(3),Q(4), R(2), S(1)



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