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 $\mathrm{JK} \mathrm{mol}^{-1}$.

A
1,18 only
B
1,11 only
C
L, II, Ill only
D
II, III anly
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.

A
I, II, III
B
I, III
C
II, III
D
I, II
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
$$\mathrm{400~kJ~mol^{-1}}$$ $$\mathrm{C-H}$$ $$\mathrm{C}(\mathrm{g}) 700 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
$$\mathrm{350~kJ~mol^{-1}}$$ $$\mathrm{C-C}$$ $$\mathrm{H}(\mathrm{g}) 200 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
$$\mathrm{700~kJ~mol^{-1}}$$ $$\mathrm{C=O}$$ $$\mathrm{O}(\mathrm{g}) 250 \mathrm{~kJ} \mathrm{~mol}^{-1}$$

A
$$-200$$ kJ mol$$^{-1}$$
B
$$-400$$ kJ mol$$^{-1}$$
C
$$-350$$ kJ mol$$^{-1}$$
D
$$-150$$ kJ mol$$^{-1}$$
4
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

From the following plots, find the correct option.

AP EAPCET 2022 - 4th July Evening Shift Chemistry - Thermodynamics Question 24 English

A
$$T_1>T_2: p_1>p_2$$
B
$$T_1>T_2: p_2>p_1$$
C
$$T_2>T_1: p_2>p_1$$
D
$$T_2>T_1: p_1>p_2$$
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