AP EAMCET Engineering 2018 Apr 22 Shift 1 Paper

(1) 2LiNO3

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Δ

Li2O+N2O5
(2) Sodium nitrate does not give oxide on heating as it is thermally stable as shown below.
NaNO3

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Δ

‌No reaction
(3) Ba(NO3)2

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Δ

BaO+N2O5
(4) Be (NO3 )2

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Δ

BeO+N2O3
Therefore, NaNO ‌3 is a nitrate which does not give its oxide.