1
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the difference between $$\Delta H$$ and $$\Delta \mathrm{U}$$ for reaction given below at $$298 \mathrm{~K}$$ ?

($$\mathrm{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$$

$$2 \mathrm{C}_6 \mathrm{H}_{6(\ell)}+15 \mathrm{O}_{2(\mathrm{~g})} \rightarrow 12 \mathrm{CO}_{2(\mathrm{~g})}+6 \mathrm{H}_2 \mathrm{O}_{(\ell)}$$

A
$$-2.72 \mathrm{~kJ}$$
B
$$-7.43 \mathrm{~kJ}$$
C
$$-7.8 \mathrm{~kJ}$$
D
$$-3.72 \mathrm{~kJ}$$
2
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the energy of an electron in stationary state corresponding to $$\mathrm{n}=2$$ ?

A
$$-1.45 \times 10^{-18} \mathrm{~J}$$
B
$$-0.545 \times 10^{-18} \mathrm{~J}$$
C
$$-3.45 \times 10^{-18} \mathrm{~J}$$
D
$$-2.5 \times 10^{-18} \mathrm{~J}$$
3
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the molecule having dipole moment.

A
BF$$_3$$
B
CCl$$_4$$
C
CHCl$$_3$$
D
CH$$_4$$
4
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify homoleptic complex from following.

A
$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$$
B
$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{SO}_4$$
C
$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right]^{+}$$
D
$$\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)\left(\mathrm{NH}_3\right)_5\right] \mathrm{I}_3$$
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