Question

A.
(d) bases
Tick(/) the correct answer:
1. The acid present in sour milk is:
(a) acid
(b) alkalis
(c) salts
2. The acid present in our stomach that helps in digestion of food is.
(a) nitric acid
(b) acetic acid (c) hydrochloric acid
The colour of methyl orange in acids is:
(a) yellow
(b) pink
(c) red
Acidic soil can be neutralized by adding:
(a) quick lime
(b) vinegar
(c) nitric acid
(d) sulphuric acid
3.
(d) orange
p.
(d) formicacid
B.
Fill in the blanks:
1. Acids are
in taste whereas bases are
2. Acids turn
litmus to __; whereas bases turn
3. When an acid reacts with a base,
is formed along with water.
4. Turmeric is an example of a
indicator
litmus to
Science-7​

Answer 1

Answer :

A )

1 ). (B ). Alkalis

2 ). (C ). Hydrochloric Acid, HCl

3 )*. (a ) Yellow

4 ). ( a ). Quick Lime

B ) 1.) Acids are sour in taste whereas bases are bitter/slippery .

2 ). Acids turn litmus to red whereas bases turn to blue.

3 ). When an acid reacts with a base, salt is formed along with water.

4 ). Turmeric is an example of natural indicator.