Worksheetsacids bsaes and salts
Total questions: 14
Worksheet time: 7mins
Name
Class
Date
1.
Do acids and bases conduct electricity?
a)
Only acids conduct electricity
b)
Only bases conduct electricity
c)
Bases and acids conduct electricity
d)
Neither conduct electricity
2.
Which of the following values would represent the pH of a strong base?
a)
1
b)
8
c)
7
d)
13
3.
What range of values on the pH scale represent solutions with a higher ratio of hydronium (H3O+) ions?
a)
0-14
b)
below 7
c)
7
d)
above 7
4.
an aqueous soln turns red lithmus blue . excess addition of which of the following would reverse the change
a)
baking powder
b)
lime
c)
ammonium hydroxide solution
d)
HCL
5.
a sample of soil is mixed with water and allow to settle . The soln turns yellowish orange which of the foll soln will turn the colour to greenish blue
a)
lemon juice
b)
vinegar
c)
common salt
d)
antacid
6.
If a few drops of concentrated acid accidentally spills over the hand of a student,what should be done
a)
wash the hand with saline solution
b)
wash the hand immediately with plenty of water and apply a soln of sodium hydrogen carbonate
c)
after washing apply soln of sodium hydroxide
d)
neutralise the acid wih a strong alkali
7.
sodium hydrogen carbonate when added to acetic acid evolves a gas .which of the statement is true about the gas evolved
a)
it turns lime water milky
b)
it burns with a pop sound
c)
it changes the soln colorless
d)
it has a pungent smell
8.
common salt besides being used in kitchen can also be used as the raw material for making
a)
washing soda
b)
calcium salts
c)
plaster of paris
d)
slaked lime
9.
which of the foll phenomena occur when a small amunt of acid is added to water
a)
ionisation
b)
neutralisation
c)
dilution
d)
formation
10.
which one of the foll can be used as acid-base indicator by visually impared student
a)
litmus
b)
turmeric
c)
vanilla essence
d)
petunia leaves
11.
which of the foll substances will not give carbon dioxide on treatment with dilute acid
a)
marble
b)
limestone
c)
baking soda
d)
lime
12.
which of the foll is acidic in nature
a)
limewater
b)
humanblood
c)
lime juice
d)
antacid
13.
which of the foll is not a base
a)
NAOH
b)
KOH
c)
NH4OH
d)
C2H5OH
14.
which of the foll are present in dil aqueous soln of HCL
a)
H3O+ +CL-
b)
H30+ +OH-
c)
CL+ +OH-
d)
UNIONISED HCL
100 %
