Question

Dora has three different solutions in test tubes labelled as A, B, and C. The table below shows the observations when red cabbage juice and turmeric solution are used as an indicator. Analyse the table and choose the correct option.
I
n
d
i
c
a
t
o
r
T
u
b
e

A
T
u
b
e

B
T
u
b
e

C
R
e
d

C
a
b
b
a
g
e

J
u
i
c
e
R
e
d
P
u
r
p
l
e
B
l
u
i
s
h
−
g
r
e
e
n
T
u
r
m
e
r
i
c
Y
e
l
l
o
w
Y
e
l
l
o
w
R
e
d

Tube A: Hydrochloric acid, Tube B: Water, Tube C: Baking soda
Tube A: Baking soda, Tube B: Hydrochloric acid, Tube C: Lime juice
Tube A: Lime juice, Tube B: Baking soda, Tube C: Hydrochloric acid
Tube A: Hydrochloric acid, Tube B: Baking soda, Tube C: Lime juice

Answer 1

ANSWER:

Indicator Tube

A Tube

BTube

C Red

Cabbage

Juice Red Purple Bluish

Green Turmeric Yellow Red

I Hope this answer will help you....if it helps than plz comment or press thank button..

Answer 2

Tube A → Hydrochloric Acid

Tube B → Water

Tube C → Baking Soda

(Option A is correct)

Given,

Tube         Red Cabbage Juice         Turmeric

A                Red                                    Yellow

B                Purple                                Yellow

C                Bluish-green                      Red

To Find,

Contents of the 3 tubes

Solution,

The Red Cabbage solution, purple in the color act as an indicator to detect the acidic or basic nature of a substance. Whenever this purple solution is exposed to acid, it turns red. Likewise, when it is exposed to a base, it turns green.

Now, when we compare it from the table, it can be said that,

Tube A → Acidic

Tube B → Neither Acidic nor Basic

Tube C → Basic

Turmeric acts as an indicator of acidic or basic solutions, which changes color when the solution becomes acidic or basic. There is a substance in turmeric called curcumin, which appears yellow in an acidic or neutral solution, but turns red in a basic solution.

Now, when we compare it from the table, it can be said that,

Tube A → Acidic or Neutral

Tube B → Acidic or Neutral

Tube C → Basic

After comparing both the inferences, we can say that

Tube A → Acidic

Tube B → Neutral

Tube C → Basic

Thus, the contents are (from looking at the given options)

Tube A → Hydrochloric Acid

Tube B → Water

Tube C → Baking Soda

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