1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
What is [H+] in mol/L of a solution that is 0.20 M in CH3COONa and 0.10 M in CH3COOH? Ka for CH3COOH = 1.8 $$ \times $$ 10$$-$$5
A
3.5 $$ \times $$ 10$$-$$4
B
1.1 $$ \times $$ 10$$-$$5
C
1.8 $$ \times $$ 10$$-$$5
D
9.0 $$ \times $$ 10$$-$$6
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
The number of atoms in 0.1 mol of a triatomic gas is (NA = 6.02 $$ \times $$ 1023 mol$$-$$1)
A
6.026 $$ \times $$ 1022
B
1.806 $$ \times $$ 1023
C
3.600 $$ \times $$ 1023
D
1.800 $$ \times $$ 1022
3
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
25.3 g of sodium carbonate, Na2CO3 is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ion, Na+ and carbonate ions, CO$${}_3^{2 - }$$ are respectively (Molar mass of Na2CO3 = 106 g mol$$-$$1)
A
0.955 M and 1.910 M
B
1.910 M and 0.955 M
C
1.90 M and 1.910 M
D
0.477 M and 0.477 M
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
The correct order of the decreasing ionic radii among the following isoelectronic species is
A
Ca2+ > K+ > S2$$-$$ > C$$l$$$$-$$
B
C$$l$$$$-$$ > S2$$-$$ > Ca2+ > K+
C
S2$$-$$ > Cl$$-$$ > K+ > Ca2+
D
K+ > Ca2+ > Cl$$-$$ > S2$$-$$
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