1
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1

What is the stoichiometric coefficient of $ \mathrm{SO}_{2} $ in the following balance reaction?

$ \mathrm{MnO}_{4}^{-}(a q)+\mathrm{SO}_{2}(\mathrm{~g}) \longrightarrow \mathrm{Mn}^{2+}(a q)^{-}+\mathrm{HSO}_{4}^{-}(a q) $

(in acidic solution)

A
5
B
4
C
3
D
2
2
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
If the de-broglie wavelength of a particle of mass $ (m) $ is 100 times its velocity. Then, its value in terms of its mass $ (m) $ and plank constant $ (h) $ is
A
$ \frac{1}{10} \sqrt{\frac{m}{h}} $
B
$ 10 \sqrt{\frac{h}{m}} $
C
$ \frac{1}{10} \sqrt{\frac{h}{m}} $
D
$ 10 \sqrt{\frac{m}{h}} $
3
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
Electron affinity is positive, when
A
$ \mathrm{O}^{2} $ changes into $ \mathrm{O}^{-} $
B
$ \mathrm{O}^{-} $changes to $ \mathrm{O}^{2-} $
C
$ \mathrm{O}^{\text {changes into } \mathrm{O}^{+}} $
D
O changes to $ \mathrm{O}^{2+} $
4
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
The bond dissociation energy of $ X_{2}, Y_{2} $ and $ X Y $ are in the ratio of $ 1: 0.5: 1 . \Delta H $ for the formation of $ X Y $ is $ -200 \mathrm{~kJ} / \mathrm{mol} $. The bond dissociation energy of $ X_{2} $ will be
A
$ 200 \mathrm{~kJ} / \mathrm{mol} $
B
$ 100 \mathrm{~kJ} / \mathrm{mol} $
C
$ 400 \mathrm{~kJ} / \mathrm{mol} $
D
$ 800 \mathrm{~kJ} / \mathrm{mol} $
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