Question

plss tell the ans of 9th question

Answer 1

Answer:

• Iron Nail is used to hang a frame or make something fixed to the wall.
• Graphite is used in pencils and lubricants.
• Iodine can be found in table salt, and is very essential for thyroid gland to produce the hormone.
• Zinc is used, mostly, to galvanize metals, preventing the process of rusting.

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