Question

used by the presence of a base
(d) Change of colour in an acid or base depends on the type of indicator used,
(e) Indicator is a substance which shows different colours in acidic and basic solutions
7. Is sodium hydroxide an acid or a base ?
8. What can you say about the nature of a solution which turns blue litmus paper red?
9. Ammania is found in many household products such as window cleaners. It turns red litmus blue What
is its nature?
10. Name any two gaseous pollutants which cause acid rain.
11. Name two strong acids and two weak acids.
12. Name two strong bases and two weak bases
13. Name the chemical which is injected into the skin of a person when an ant bites.
14. What does calamine solution contain ?
15. What name is given to the reaction in which an acid reacts with a base to form salt and water?
16. Which indicator is used to carry out the neutralisation reaction of hydrochloric acid with sodium hydroxide
solution
17. Name the salt formed when hydrochloric acid neutralises sodium hydroxide solution
18. (a) Name two organic acids (naturally occurring acids).
(h) Name two mineral acids.
19. (a) Give one characteristic property of all acids.
(b) Write one characteristic property of all bases
20. Fill in the following blanks with suitable words:
(a) Excessive use of chemical fertilisers make the soil
(b) When an acid is mixed with a base, a ............reaction takes place
(c) The products formed in a neutralisation reaction of an acid and a base are and
(d) Acid Base
Sot.... + Water
(e) Hydrochloric acid Sodium hydroxide -->
Water
( The acidic or basic nature of a substance is tested by using an ......
(s) The substances which show different colours in acidic, basic and neutral solutions are called
S.sthium chloride​

Answer 1

Answer:

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