a
Na2CO3
b
Na2O
c
NaNO2
d
NaOH
Explanation
Correct Option
bNo explanation available
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Discussions (7)

whit3
2 years ago
B is correct. why
When sodium peroxide is heated with excess sodium, it undergoes a redox reaction where sodium peroxide (Na2O2) is reduced to sodium oxide (Na2O), with sodium acting as the reducing agent.

OdepidanFemi
9 years ago
The selected answer is wrong:
it cobalt 60 that is use for welding and casting in radiography while phosphorus 32 is use for treating cancer of thyroid gland and leukaemia
REF: New school chemistry page 304


