Stone Most of the rocks are seriously damaged by fire if the temperatures in degree centigrade to which they are exposed reach about -

[Dnyan Deshmukh]

Most of the rocks are seriously damaged by fire if the temperatures in degree centigrade to which they are exposed reach about -

(a) 1000

(b) 2000

(c) 350

(d) 850.


The correct Answer Is

850

 

[Baral Prabhat]

B