A. in which atoms align themselves in a geometric pattern upon solidification B. in which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid C. which is not attacked by phosphorous D. which emits fumes on melting E. none of the above...
A. alpha iron, beta iron and gamma iron B. alpha iron and beta iron C. body centred cubic a-iron and face centred cubic a-iron D. alpha iron, gamma from and delta iron E. none of the above...
A. are used where ease in machining is the criterion B. contain carbon in free form C. require least cutting force D. do not exist E. can be cut freely even under adverse conditions...
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