Question

Fill in the blanks with the most appropriate option.
W is very reactive metal, reacts vigorously with oxygen and water therefore, stored in _(1)__.
is non-metal, soft and dull and forms (2) oxides with oxygen.
Y is very reactive (3) catches fire if exposed to air, therefore, stored in water.
Z does not react with dilute hydrochloric acid even on heating but it reacts with sulphuric acid. When it is exposed to
moist ar for long it acquires a dull__14__ coating,
22
1-(erosene 2-acoc 3-mets, 4-reddish brown​

Answer 1

Answers:

1) Kerosene

2) acidic

3) non-metal

4) green

Answer 2

Answer:

W is Sodium (Na)

(1) Kerosene

X is Sulphur (S)

(2) acidic

Y is Phosphorus (P)

(3) non-metal oxides

Z is Copper (Cu)

(4) reddish brown

Explanation:

Sodium reacts with moisture and oxygen vigourously. So, it is stored under kerosene.

Sulphur is a soft and dull non-metal that forms acidic oxides ($SO_{2}$ and $SO_{3}$). They react with rain to produce acid rain that damage buildings and its materials.

Phosphorus is also highly reactive when exposed to air. So, it's stored under water.

Copper only reacts with strong oxidizing acids such as nitric acid and concentrated sulfuric acid