. adhle.i @ adhle.i
Ac ,Ba
& Sa
CH 2 S Ca 10
No e + 10 Yea In eg a ed PYQ'
,. adhle.i @ adhle.i
adhle.in
,. adhle.i @ adhle.i
adhle.in
, Aids Bases .
and Salts
Sour or bitter ?
The bitter tastes
in them
sour
.
and of food are due to acids and bases ,
respectively ,
thitmus
-
Acid turns BLUE litmus RED !
-
Base turns RED litmus BLUE !
Tlhlck -
AB Road → Acid turns BLUE litmus RED
Indicators
An indicator tells whether the substance is base
given acid
•
us an or a
by the change in it 's colour !
indicators :
For now , we need to know about 3
types of
-
A) Natural Indicators
④ Indicators which are obtained
naturally are called natural indicators , for
example : Litmus ,
red , cabbage ,
turmeric ,
onion , vanilla ,
clove ,
etc .
B) Olfactory Indicators
1) Substances which change their odour with acid and base are called olfactory
indicators .
•
Vanilla cloves onion , , ,
etc .
Ac ,Ba
& Sa
CH 2 S Ca 10
No e + 10 Yea In eg a ed PYQ'
,. adhle.i @ adhle.i
adhle.in
,. adhle.i @ adhle.i
adhle.in
, Aids Bases .
and Salts
Sour or bitter ?
The bitter tastes
in them
sour
.
and of food are due to acids and bases ,
respectively ,
thitmus
-
Acid turns BLUE litmus RED !
-
Base turns RED litmus BLUE !
Tlhlck -
AB Road → Acid turns BLUE litmus RED
Indicators
An indicator tells whether the substance is base
given acid
•
us an or a
by the change in it 's colour !
indicators :
For now , we need to know about 3
types of
-
A) Natural Indicators
④ Indicators which are obtained
naturally are called natural indicators , for
example : Litmus ,
red , cabbage ,
turmeric ,
onion , vanilla ,
clove ,
etc .
B) Olfactory Indicators
1) Substances which change their odour with acid and base are called olfactory
indicators .
•
Vanilla cloves onion , , ,
etc .
