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 ᴋᴇʀᴏsᴇɴ
other at night:- janu banu lifeline pipeline xd
me at night:- ager ye pankha mere uper gir gya to mera kya hoga xd lol
Answers
Explanation:
a) 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.
b) Immersion rods are made up of metallic substances because metals are good conductors of heat and electricity. They get hot very soon and allow to passage of current and warm water.
c) 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.
d) 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:
isha.
10th
neptune.. xd
The power (P) of a lens of focal length f is given by the relation
Power (P) = 1/f
(i) Power of the lens (used for correcting distant vision) = – 5.5 D
Focal length of the lens (f) = 1/P
f = 1/-5.5
f = -0.181 m
The focal length of the lens (for correcting distant vision) is – 0.181 m.