1
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

The number of 3C$$-$$2e$$-$$ bonds present in diborane is

A
1
B
2
C
3
D
4
2
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

Standard entropy of X2, Y2 and XY2 are 60, 40 and 50 JK$$-$$1mol$$-$$1, respectively. For the reaction, $$\frac{1}{2}$$X2 + $$\frac{3}{2}$$Y2 $$\to$$ XY3, $$\Delta$$H = $$-$$30 kJ, to be at equilibrium, the temperature will be

A
1250 K
B
500 K
C
750 K
D
1000 K
3
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

The total number of P$$-$$OH bonds for pyrophosphoric acid

A
4
B
5
C
6
D
8
4
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

Using the standard electrode potential, find out the pair between which redox reaction is not feasible.

E$$^\Theta $$ values Fe3+ / Fe2+ = + 0.77; I2 / I$$-$$ = + 0.54 Cu2+ / Cu = + 0.34; Ag+ / Ag = 0.80 V

A
Fe3+ and I$$-$$
B
Ag+ and Cu
C
Fe3+ and Cu
D
Ag and Fe3+
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