Chemistry - Complete P-block Question with Solution | TestHub
ChemistryComplete P-blockp-Block 15,16Hard2 minQB
ChemistryHardmultiple choice
(A) blue crystalline solid (B) black solid + (C) brown gas + (D) colourless gas
(E) colourless solid (F) + (D)
Which of the following statement(s) is/are correct for the above reactions?
Options:(select one or more)
Answer:
A, D
Solution:
(A) = Cu(NO₃)₂ : 2Cu(NO₃)₂ → 2CuO + 4NO₂↑ + O₂↑, so (B) = CuO (black, a BASIC oxide - (C) false) and (C) = NO₂ (brown, paramagnetic). (E) = NaNO₃ : 2NaNO₃ → 2NaNO₂ + O₂, so (D) = O₂ (PARAMAGNETIC - (B) false) and (F) = NaNO₂, whose sodium gives a golden-yellow flame.
Stream:JEESubject:ChemistryTopic:Complete P-blockSubtopic:p-Block 15,16
⏱ 2mℹ️ Source: QB
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