1
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+} $
2
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} $
3
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
The pH of 1 N aqueous solutions of HCl , $ \mathrm{CH}_{3} \mathrm{COOH} $ and HCOOH follows the order:
A
$ \mathrm{HCl} > \mathrm{HCOOH} > \mathrm{CH}_{3} \mathrm{OOH} $
B
$ \mathrm{HCl}=\mathrm{HCOOH} > \mathrm{CH}_{3} \mathrm{COOH} $
C
$ \mathrm{CH}_{3} \mathrm{COOH} > \mathrm{HCOOH} > \mathrm{HCl} $
D
$ \mathrm{CH}_{3} \mathrm{COOH}=\mathrm{HCOOH} > \mathrm{HCl} $
4
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
The ionic radii in $ \mathring{A} $ of $ \mathrm{N}^{3-}, \mathrm{O}^{2-} $ and $ \mathrm{F}^{-} $are respectively.
A
$ 1.71,1.40 $ and 1.36
B
$ 1.71,1.36 $ and 1.40
C
$ 1.36,1.40 $ and 1.71
D
$ 1.36,1.71 $ and 1.40
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