Explanation

Sodium is a chemical element with the symbol Na and atomic number 11.

It is a soft, silvery-white, highly reactive metal.

Sodium is an alkali metal, being in group 1 of the periodic table.

Explanation

Explanation

22-karat gold, which contains 91.6% pure gold and 8.4% other metals like copper and silver,

It is commonly called "916 gold" or "22K gold" and is typically identified by a hallmark stamp indicating its purity. 

Explanation

Explanation

For example, 22-carat gold will be marked as "22K" or "916," representing 91.6% purity.

The 916 hallmark gold price is often higher due to this guaranteed purity.

Explanation

 18-karat gold contains 75% pure gold and 25% other metals, such as silver and copper. 

Explanation

Galvanized iron sheets have a coating of zinc. 

Galvanization is a process where a layer of zinc is applied to iron or steel to protect it from rusting, making "galvanized iron" essentially iron coated with zinc

Explanation

Nichrome, an alloy of nickel and chromium.

It is used because of its high resistance and ability to withstand high temperatures without oxidizing.

Explanation

Chlorine is the gas used to disinfect and purify water.

It is passed through water to kill bacteria.

Explanation

Aqua is a greenish-blue color, often thought of as the shade of water.

Aqua, water in Latin, is a variation of cyan that sits between green and blue in the color wheel.

Aqua means پانی

Water means پانی