Q. 1. What is the conjugate base of OH-?
(a) O2 (b) H2O (c) O- (d) O2-
Q. 2. The solution of NaCl is –
(a) Acidic (b) Basic (c) Neutral (d) Amphoteric
Q. 3. pH is
(a) –log [H+] (b) –log [OH-] (c) log[H+] (d) log[OH-]
Q. 4. The numerical value of Kw at 298K is approximately –
(a) 10^-7 (b) 10^-14 (c) 10^14 (d) 10^7
Q. 5. A buffer solution comprises which of the following?
(a) a weak acid in solution
(b) a strong acid in solution
(c) a weak base in solution
(d) a weak acid and its conjugate base
Answers:
1.(d)
2.(c)
3.(a)
4.(b)
5.(d)