Asked: U.P.P.C.S. (Pre) 2002medium Level
QUESTION STATEMENT:द्विभाषी / Bilingual
निम्नलिखित में से कौन धातु चुम्बक द्वारा आकर्षित नहीं होती-
Which of the following metals is NOT attracted by a magnet?
SELECT CORRECT OPTION:
A
लोहा
Iron
B
निकेल
Nickel
C
कोबाल्ट
Cobalt
D
एल्युमीनियम
Aluminium
Correct
Official Solution & Explanation:
Correct Answer: Option D(एल्युमीनियम)
लोहा, निकल और कोबाल्ट लौह-चुंबकीय (Ferromagnetic) पदार्थ हैं जो चुंबक द्वारा प्रबलता से आकर्षित होते हैं। एल्युमीनियम एक अनुचुंबकीय (Paramagnetic) पदार्थ है, जो साधारण चुंबक द्वारा आकर्षित नहीं होता।
Iron, nickel, and cobalt are ferromagnetic materials strongly attracted to magnets. Aluminium is paramagnetic and does not exhibit noticeable attraction to an ordinary permanent magnet.
Subject: General Science•Topic: Miscellaneous (Physics)•Subtopic: Miscellaneous (Physics)
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