Question

ᴀʟᴜᴍɪɴɪᴜᴍ ғᴏɪʟs ᴀʀᴇ ᴜsᴇᴅ ᴛᴏ ᴡʀᴀᴘ ғᴏᴏᴅ ɪᴛᴇᴍs.

(ʙ) ɪᴍᴍᴇʀsɪᴏɴ ʀᴏᴅs ғᴏʀ ʜᴇᴀᴛɪɴɢ ʟɪǫᴜɪᴅs ᴀʀᴇ ᴍᴀᴅᴇ ᴜᴘ ᴏғ ᴍᴇᴛᴀʟʟɪᴄ sᴜʙsᴛᴀɴᴄᴇs.

(ᴄ) ᴄᴏᴘᴘᴇʀ ᴄᴀɴɴᴏᴛ ᴅɪsᴘʟᴀᴄᴇ ᴢɪɴᴄ ғʀᴏᴍ ɪᴛs sᴀʟᴛ sᴏʟᴜᴛɪᴏɴ.

(ᴅ) sᴏᴅɪᴜᴍ ᴀɴᴅ ᴘᴏᴛᴀssɪᴜᴍ ᴀʀᴇ sᴛᴏʀᴇᴅ ɪɴ ᴋᴇʀᴏsᴇɴᴇ
hamari language me jao sab thus ke aao khana xd lol​

Answer 1

Answer:

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Explanation:

1. Ans: Aluminium foils are used to wrap food items because aluminium being a soft malleable metal it can be beaten to in sheets to form thin wrapping sheets. Moreover it does not react with food items. Immersion rods are made of metallic substances metals are good conductors of heat and electricity.

2. Immersion rods for heating liquids are made up of metallic substances because metals are good conductors of heat and electricity. The immersion rod needs electric supply to get heated and; in turn; to heat liquids.

3. Copper is less reactive than zinc and so placed below zinc in the reactivity series of metals. A less reactive metal cannot displace a more reactive metal from its salt solution. Hence, copper cannot displace zinc from its salt solution

4. Sodium and Potassium are highly reactive metals and react vigorously with the oxygen, carbon dioxide and moisture present in the air such that it may even cause a fire. To prevent this explosive reaction, Sodium is kept immersed in kerosene because Sodium doesn't react with kerosene.

Answer 2

Answer:

kya janemaan bina bye bola ja re ho.. xd

itna zeher faila diya nind kaise aayegi

The Silk Route (Asia): The silk routes are a good example of cross-cultural trade and connectivity between distant parts of the world. The name ‘silk routes’ points to the importance of West-bound Chinese silk cargoes along this route.