1
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
2
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$$^{-1}$$
3
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 3 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
$$T_2>T_1: p_1>p_2$$
4
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Observe the following properties : Volume, enthalpy, density, temperature, heat capacity, pressure and internal energy. The number of extensive properties in the above list is

A
4
B
5
C
6
D
3
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