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1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The conjugate base of H2PO4- is :
A
$$PO_4^{3-}$$
B
$$HPO_4^{2-}$$
C
H3PO4
D
P2O5
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
The molar solubility (in ol L-1) of a sparingly soluble salt MX4 is "s". The corresponding solubility product is Ksp. 's' is given in term of Ksp by the relation :
A
s = (256 Ksp)1/5
B
s = (128 Ksp)1/4
C
s = ( Ksp / 128)1/4
D
s = (Ksp / 256)1/5
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The solubility in water of a sparingly soluble salt AB2 is 1.0 $$\times$$ 10-5 mol L-1. Its solubility product number will be :
A
4 $$\times$$ 10-10
B
1 $$\times$$ 10-15
C
1 $$\times$$ 10-10
D
4 $$\times$$ 10-15
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Which one of the following statements is not true?
A
pH + pOH = 14 for all aqueous solutions
B
The pH of 1 $$\times$$ 10-8 M HCl is 8
C
96,500 coulombs of electricity when passed through a CuSO4 solution deposits 1 gram equivalent of copper at the cathode
D
The conjugate base of $$H_2PO_4^-$$ is $$HPO_4^{2-}$$
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