1
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which condition is not satisfied by an ideal solution?

A
Both $$\Delta_{\text {mix }} H=0$$ and $$\Delta_{\text {mix }} S=0$$
B
Obeyance on Raoult's law
C
Both $$\Delta_{\text {mix }} H=0$$ and $$\Delta_{\text {mix }} V=0$$
D
$$\Delta_{\text {mix }} H=0$$
2
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

A solution of urea (molar mass $$60 \mathrm{~g} \mathrm{~mol}^{-1}$$ ) boils at $$100.20^{\circ} \mathrm{C}$$ at the atmospheric pressure, if $$K_f$$ and $$K_b$$ for water are 1.86 and $$0.512 \mathrm{~K}$$ $$\mathrm{kg} \mathrm{mol}^{-1}$$ respectively. The freezing point of the solution will be

A
$$-0.654\Upsilon$$C
B
$$+0.654\Upsilon$$C
C
$$-0.726\Upsilon$$C
D
$$+0.726\Upsilon$$C
3
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

At $$291 \mathrm{~K}$$, saturated solution of $$\mathrm{BaSO}_4$$ was found to have a specific conductivity of $$3.648 \times 10^{-6} \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}$$ and that of water being used is $$1.25 \times 10^{-6} \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}$$. If the ionic conductances of $$\mathrm{Ba}^{2+}$$ and $$\mathrm{SO}_4^{2-}$$ are 110 and $$136.6 \mathrm{ohm}^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$ respectively. The solubility of $$\mathrm{BaSO}_4$$ at $$291 \mathrm{~K}$$ will be [Atomic masses of $$\mathrm{Ba}=137, \mathrm{~S}=32, \mathrm{O}=16]$$

A
$$1.435 \times 10^{-3} \mathrm{gL}^{-1}$$
B
$$2.266 \times 10^{-3} \mathrm{gL}^{-1}$$
C
$$2.843 \times 10^{-3} \mathrm{gL}^{-1}$$
D
$$1.768 \times 10^{-3} \mathrm{gL}^{-1}$$
4
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Find the emf of the following cell reaction. Given, $$E_{\mathrm{Cr}^{3+} / \mathrm{Cr}^{2+}}^{\Upsilon}=-0.72 \mathrm{~V}$$ and $$E_{\mathrm{Fe}^{2+} / \mathrm{Fe}}^{\Upsilon}= -0.42 \mathrm{~V}$$ at $$25^{\circ} \mathrm{C}$$ is $$\mathrm{Cr}\left|\mathrm{Cr}^{3+}(0.1 \mathrm{M})\right| \mid \mathrm{Fe}^{2+} (0.1 \mathrm{M}) \mid \mathrm{Fe}$$

A
0.30 V
B
0.25 V
C
1.14 V
D
1.56 V
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