1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
The values of Ksp of CaCO3 and CaC2O4 are 4.7 $$ \times $$ 10$$-$$9 and 1.3 $$ \times $$ $$-$$9 respectively at 25oC. If the mixture of these two is washed with water, what is the concentration of Ca2+ ions in water ?
A
5.831 $$ \times $$ 10$$-$$5 M
B
6.856 $$ \times $$ 10$$-$$5 M
C
3.606 $$ \times $$ 10$$-$$5 M
D
7.746 $$ \times $$ 10$$-$$5 M
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
The dissociation constant of weak acid is 1 $$ \times $$ 10$$-$$4. In order to prepare a buffer solution with a pH = 5, the [Salt]/[Acid] ratio should be
A
4 : 5
B
10 : 1
C
5 : 4
D
1 : 10
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Arrange the following in increasing order of stability
NEET 2013 (Karnataka) Chemistry - Some Basic Concepts of Organic Chemistry Question 66 English
A
5 < 4 < 3 < 1< 2
B
4 < 5 < 3 < 1 < 2
C
1 < 5 < 4 < 3 < 2
D
5 < 4 < 3 < 2 < 1
4
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
What is the hybridisation state of benzyl carbonium ion?

NEET 2013 (Karnataka) Chemistry - Some Basic Concepts of Organic Chemistry Question 65 English
A
sp2
B
spd2
C
sp2d
D
sp3
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