Question

4. Water is neutral to indicator.
5. Calcium hydroxide is also known as caustic
2.4. Tick (V) only the correct choice amongst the following:
(6) Metals react with
1. Salt is formed when
(a) Metals react with oxygen
(c) Metals reach with acid
2. HNO, is a/an
(a) Salt
(d) None of these
(b) Base
(d) Compound
(c) Acid
3. Alum is used for
(a) Removing chlorine with water
(6) Purification of
(c) Killing germs present in water
(d) All of these​

Answer 1

Answer:

salt is formed when acid reacts with base

hno is an compound

alum is used for killing germs present in water

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