FSC Part 1 Chemistry Chapter 9 Solutions Online Test

Acid-Base Chemistry

Sr. #	Questions	Answers Choice
1	The sgtrength of base is measured by its.	Ka Kb Pkw Kw
2	If Ka of acetic acid is 1.8 X 10^-5, IT IS	Strong acid Base Weak acid Neutral
3	Which of the following is a weak base.	KOH NaOH NH3 Ca(OH)2
4	Strong acids completely dissociate in water because.	High solubility High Ka Forms complex Low Ka
5	Which of the following does not affect pH .	Concentration Temperature Color of solution Strength
6	A solution with equal [H+] and [OH-] is	Basic Acidic Neutral Salt
7	pH of blood is around.	6.0 7.4 5.4 8.0
8	The logarithmic nature of pH means.	Each pH unit = 2 x H+ 10 X H+ Per unit H+ drop linearly No change in H+
9	Which is more acidic pH3 or pH 5?	Both same pH 3 pH5 Cannot say
10	Acid rain is mainly due to	SO3 and NO3 CO2 H2 CH4
11	The pH of a buffer doesn't chagne much when	Diluted with water Acid or base is added Heated Temp changes
12	Which has the lowest pH?	0.1 M CH3COOH 1 M HCl 1 M NH3 0.1 M HCl
13	KOH is an example of	Strong Base Weak acid Neutral salt Weak base
14	pH of 10^-9 M HCl is	5 9 Slightly below 7 Exactly -9
15	The pH of distilled water at 25 oC is	6 7 5 4
16	The pH scale ranges typically from	1 -10 0 - 14 -1 to 1 7 - 14
17	A 0.01 M solution of a strong acid has a pH of	3 2 5 4