Choose the given statement is true/false:

Pure gold is not suitable for making ornaments.Calcium found in the form of compounds. Electrical wires coated with PVC (Poly Vinyl Chloride).We apply oil on iron tools kept in storage.Sodium stored in kerosene oil.

Question

Choose the given statement is true/false:

Pure gold is not suitable for making ornaments.Calcium found in the form of compounds. Electrical wires coated with PVC (Poly Vinyl Chloride).We apply oil on iron tools kept in storage.Sodium stored in kerosene oil.

Accepted Answer

Concept- 24-carat is pure gold and it is extremely soft, thus on wearing it is prone to wear and tear. To reduce the softness of gold and to make it a little hard, some other metals like copper and silver are added while making ornaments.
Calcium is a highly reactive metal, thus it readily reacts with oxygen or water present in the air around it to form its compounds. Thus, due to its high reactivity, calcium is always found in the form of compounds.
PVC (Polyvinyl chloride) is a polymer that is a poor conductor of heat and electricity. Thus, it is majorly used to coat the electric wires to avoid electric shock accidents while handling the wires.
Iron corrodes in the presence of oxygen and moisture in the atmosphere. The corrosion of iron is also known as rusting of iron. Thus, to prevent the rusting of iron tools, the iron tools are covered with oil as oil breaks the contact of tools with the air.
Sodium is a highly reactive metal and when it reacts with oxygen and moisture in the air, it produces a huge amount of heat. The liberated heat is so high that it can also cause a fire. To prevent the contact of sodium with air, sodium is stored in kerosene oil.
Hence, the correct statement is 1.

Choose the given statement is true/false:

Pure gold is not suitable for making ornaments.Calcium found in the form of compounds. Electrical wires coated with PVC (Poly Vinyl Chloride).We apply oil on iron tools kept in storage.Sodium stored in kerosene oil.

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Choose the given statement is true/false:Pure gold is not suitable for making ornaments.Calcium found in the form of compounds. Electrical wires coated with PVC (Poly Vinyl Chloride).We apply oil on iron tools kept in storage.Sodium stored in kerosene oil.

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Choose the given statement is true/false:

Pure gold is not suitable for making ornaments.Calcium found in the form of compounds. Electrical wires coated with PVC (Poly Vinyl Chloride).We apply oil on iron tools kept in storage.Sodium stored in kerosene oil.