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Acids Bases and Salts- VII

Total questions: 12

Worksheet time: 20mins

Name
Class
Date
1.

An indicator is?

a)

A lab manual or guide

b)

Something like litmus paper that can tell you if a substance is acidic or basic

c)

A PS4 game where you pretend to direct traffic

d)

Something only scientists in a lab can use

2.
Most foods are 
a)
Acid
b)
Basic
c)
Neutral
d)
salts
3.
Indicators change color in the presence of a(n) _______________.
a)
acid or base
b)
buffer
c)
water molecule
d)
ester
4.
A base has a ___________ taste.
a)
bland
b)
salty
c)
bitter
d)
sour
5.
A base has a _________________.
a)
sour taste
b)
positive ion
c)
slippery feel
d)
pH of 5
6.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
7.
 Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
8.

Acid in our stomach:

a)

Hydrochloric acid

b)

Sulfuric acid

c)

Acetic acid

d)

Carbonic acid

9.

The color of red litmus paper in basic salt solution is -

a)

Remains Red

b)

Changes to blue

c)

No color change

d)

Changes to violet

10.

The general taste of acids and bases is respectively-

a)

Sweet and salty

b)

Sour and salty

c)

Sour and sweet

d)

Sour and bitter

11.

An indicator that turn green in basic medium is _______.

a)

Phenolphthalein

b)

China rose

c)

Litmus paper

d)

Turmeric power

12.

Acid secreted by our body (stomach) for digestion of food is-

a)

Concentrated Hydrochloric acid

b)

dilute Acetic acid

c)

dilute Hydrochloric acid

d)

Concentrated Sulphuric acid