1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
PbO2  $$ \to $$ PbO; $$\Delta $$G298 < 0
SnO2 $$ \to $$ SnO;  $$\Delta $$G298 > 0

Most probable oxidation state of Pb and Sn will be
A
Pb4+, Sn4+
B
Pb4+, Sn2+
C
Pb2+, Sn2+
D
Pb2+, Sn4+
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Solubility of M2S salt is 3.5 $$ \times $$ 10$$-$$6 then find out solubility product.
A
1.7 $$ \times $$ 10$$-$$6
B
1.7 $$ \times $$ 10$$-$$16
C
1.7 $$ \times $$ 10$$-$$18
D
1.7 $$ \times $$ 10$$-$$12
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
In HS$$-$$, I$$-$$, R $$-$$ NH2, NH3 order of proton accepting tendency will be
A
I$$-$$ > NH3 > R $$-$$ NH2 > HS$$-$$
B
NH3 > R $$-$$ NH2 > HS$$-$$ > I$$-$$
C
R $$-$$ NH2 > NH3 > HS$$-$$ > I$$-$$
D
HS$$-$$ > R $$-$$ NH2 > NH3 > I$$-$$
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Correct relation between dissociation constants of a dibasic acid is
A
Ka1 = Ka2
B
Ka1 > Ka2
C
Ka1 < Ka2
D
Ka1 = $${1 \over {{K_{{a_2}}}}}$$