KVPY SX SB Exam 2018 Question Paper

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Question : 50 of 120

Marks: +1, -0

Among C, S and P, the element(s) that produce(s)

SO_2

on reaction with hot conc.

H_2SO_4

is/are

only S
only C and S
only S and P
C, S and P

Solution:

H_2SO_4 → H_2O + SO_2 + [0]

(conc)

C + [0] → CO_2

S + [0] → SO_2

P_4 + [0] → P_4O_10

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