In which of the choices given below, the cutting tool materials are placed in the ascending order of permissible cutting speed for machining of steel?

Cubic boron nitride - K group cemented carbide - Cubic boron nitride - Ceramic

K group cemented carbide - P group cemented carbide - Ceramic - Cubic boron nitride

Cubic boron nitride - K group cemented carbide - Cubic boron nitride - Ceramic

P group cemented carbide - K group cemented carbide - Cubic boron nitride - Ceramic

Ceramic - Cubic boron nitride - K group cemented carbide - P group cemented carbide

In which of the choices given below, the cutting tool materials are pl

1.	In which of the choices given below, the cutting tool materials are placed in the ascending order of permissible cutting speed for machining of steel?
A.	K group cemented carbide - P group cemented carbide - Ceramic - Cubic boron nitride
B.	Cubic boron nitride - K group cemented carbide - Cubic boron nitride - Ceramic
C.	P group cemented carbide - K group cemented carbide - Cubic boron nitride - Ceramic
D.	Ceramic - Cubic boron nitride - K group cemented carbide - P group cemented carbide
Answer» B. Cubic boron nitride - K group cemented carbide - Cubic boron nitride - Ceramic

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In which of the choices given below, the cutting tool materials are placed in the ascending order of permissible cutting speed for machining of steel?

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