Related Questions

Hardest material so far found is
A Diamond
B Graphite
C Carborundum
D Pumice stone
which of the following is the hardest element?
A Iron
B Diamond
C Copper
D Silicon
Which of the following is the hardest rock?
A Granite
B Coal
C Chalk
D Diamond
Which of the following is the hardest?
A Austenite
B Pearlite
C Bainite
D Martensite
The Hardest substance available on Earth is
A Diamond
B Wurtzite
C Platinum
D Gold
The hardest form of carbon is
A coke
B graphite
C diamond
D charcoal
Hardest allotrope of carbon is
A Diamond
B Graphite
C Coke
D Lamp black
__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
A Beryllia
B Zirconia
C Alumina
D Magnesia
Among the following the hardest metal is
A Gold
B Iron
C Platinum
D Tungsten
Which one among the following is the hardest part of our body ?
A Skull bones of head
B Thumb nails
C Enamel of teeth
D Spinal vertebra

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