Replacement 8c periodic examination in radiation industary is recommended -

Ans. is 'b' i.e., Every 2 months Preventive measures in radiation industeries1) Inhalation, swallowing or direct contact with the skin should be avoided.2) In case of X-rays, shielding should be used of such thickness and of such material as to reduce the exposure below allowable exposures.3) The employees should be monitored at intervals not exceeding 6 months by use of the filf badge of pocket electrometer devices.4) Suitable protective clothing to prevent contact with harmful material should be used.5) Adequate ventilation of work-place is necessayr to prevent inhalation of harmful gases and dusts.6) Replacement and periodic examination of workers should be done every 2 months. If harmful effects are found, the employees should be transferred to work not involving exposure to radiation.7) Pregnant women should not be allowed to work in places where there is continuous exposure.