Question

Which of the following does not give oxygen on
heating?
(1) (NH4)2Cr2O7 (2) KCIO3
(3) Zn(ClO3)2 H
(4) K2Cr2O7 te​

Answer 1

Answer:

Answer is (NH4) 2Cr2O7

Explanation:

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Answer 2

The correct answer is

option 4 meany d

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