1
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If 2.5 moles of an ideal gas at a certain temperature are allowed to expand isothermally and reversibly from an initial volume of $2 \mathrm{dm}^3$ to $20 \mathrm{dm}^3$, the work done by the gas is -16.5 kJ . The temperature (in K ) of the gas is (Round off to the nearest value) ( $R=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$ )
A
445
B
245
C
345
D
745
2
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A solution is prepared by mixing 10 mL of 1.0 M acetic acid and 20 mL of 0.5 M sodium acetate and diluted to 100 mL . If the $\mathrm{p} K_a$ of acetic acid is 4.76, then the pH of the solution is
A
4.76
B
3.76
C
5.76
D
9.24
3
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Consider the following statements about the hydrides. (I) Sodium hydride with water liberates oxygen gas. (II) Methane, silane are examples of electron precise hydrides. (III) Ammonia and water molecules are examples of electron deficient hydrides. (IV) Hydrides of beryllium and magnesium are polymeric in structure. The correct statements are
A
I and II only
B
III and IV only
C
II and IV only
D
I and IV only
4
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The nitrate of which of the following metals does mot liberate $\mathrm{NO}_2$ gas on heating?
A
Pb
B
Ba
C
Li
D
K
EXAM MAP