Question
Which of the following is/are a ferromagnetic material ?
The correct answer is
Nickel
Nickel is one of the three principal ferromagnetic metals (the others being Iron and Cobalt). Based on the magnetic properties of the materials listed, only Nickel fits the description of a ferromagnetic material due to its strong magnetization and domain structure at room temperature.
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Important Questions from Classification of Materials
- Based on the crystalline grain and shape, quantum dots are :
- Carbon nano tubes (CNT) are _____ times stronger than steel.
- Which of the following fibres are obtained from plant leaf.
(i) Pina
(ii) Sisal
(iii) Kapok
(iv) Coir
Code : - Assertion (A) : While washing woollen garments kneading and squeezing method is used.
Reason (R) : Scaly structure of wool cause felting due to friction.
Code : - Assertion (A) : Terry Towel is the most absorbant fabric structure
Reason (R) : It is a cut pile hence more surface area to absorb water.
Code :
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