1
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
2
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+
3
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

What is [NH$$_{4}^+$$] in a solution that is 0.02 M NH3 0.01 M KOH ? [Kb(NH3) = 1.8 $$\times$$ 10$$-$$5]

A
3.6 $$\times$$ 10$$-$$5 M
B
1.8 $$\times$$ 10$$-$$5 M
C
0.9 $$\times$$ 10$$-$$5 M
D
7.2 $$\times$$ 10$$-$$5 M
4
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

For an isomerisation reaction A $$\rightleftharpoons$$ B, the temperature dependence of equilibrium constant is given by

loge K = 4.0 $$-$$ $$\frac{2000}{T}$$

The value of $$\Delta$$S$$^\circ$$ at Hook is, therefore

A
4R
B
5R
C
400R
D
2000R
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