1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Change Language
At 100oC the Kw of water is 55 times its value at 25oC. What will be the pH of neutral solution? (log 55 = 1.74)
A
7.00
B
7.87
C
5.13
D
6.13
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
KMnO4 can be prepared from K2MnO4 as per the reaction,

3MnO42$$-$$ + 2H2O $$\rightleftharpoons$$ 2MnO4$$-$$ + MnO2 + 4OH$$-$$

The reaction can go to completion by removing OH$$-$$ ions by adding
A
CO2
B
SO2
C
HCl
D
KOH
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of these is least likely to act as a lewis base ?
A
BF3
B
PF3
C
CO
D
F$$-$$
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Change Language
Buffer solutions have constant acidity and alkalinity because
A
these give unionised acid or base on reaction with added acid or alkali
B
acids and alkalies in these solutions are shielded from attack by other ions
C
they have large excess of H+ or OH$$-$$ ions
D
they have fixed value of pH
NEET Subjects
EXAM MAP