Question
Which of the following is the hardest constituent of steel ?
The correct answer is
Martensite
Why Martensite is the Hardest Steel Constituent The exceptional hardness of Martensite comes from its unique crystal structure and the carbon trapped within it. Therefore, among the given options, Martensite is the hardest constituent of steel.
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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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