1
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Identify the incorrect statements form the following.
I. $ \Delta S_{\text {pum }}=\left(\Delta S_{\text {nal }}+\Delta S_{\text {um }}\right) $
II. $A(\bar{i} \rightarrow A(\phi)$ : For this process entropy change decreases.
III. Entropy units are $\mathrm{JK} \mathrm{mol}^{-1}$.
2
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0
Identify the correct statements from the following.
I. At 0 K , the entropy of pure crystalline materials approach zero.
II. Entropy for the process, $$\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{g})$$ decreases.
III. Gibb's energy is a state function.
3
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0
Use the data from table to estimate the enthalpy of formation of $$\mathrm{CH}_3 \mathrm{CHO}$$.
| Bond enthalpy | Bond | Enthalpy of formation |
|---|---|---|
| $$\mathrm{400~kJ~mol^{-1}}$$ | $$\mathrm{C-H}$$ | $$\mathrm{C}(\mathrm{g}) 700 \mathrm{~kJ} \mathrm{~mol}^{-1}$$ |
| $$\mathrm{350~kJ~mol^{-1}}$$ | $$\mathrm{C-C}$$ | $$\mathrm{H}(\mathrm{g}) 200 \mathrm{~kJ} \mathrm{~mol}^{-1}$$ |
| $$\mathrm{700~kJ~mol^{-1}}$$ | $$\mathrm{C=O}$$ | $$\mathrm{O}(\mathrm{g}) 250 \mathrm{~kJ} \mathrm{~mol}^{-1}$$ |
4
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0
From the following plots, find the correct option.
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