Section 15 is in these words "Where the Central Government is of the opinion that (a)in respect of any scheduled industry or industrial undertaking or undertakings (i)there has been, or is likely to be a substantial fall in the, volume of production in respect of any article or class of articles relatable to that industry, or manufactured, or produced in the industrial undertaking or undertakings, as the case may be, for which having regard to the economic conditions prevailing, there is no justification ; or (ii)there has been or is likely to be a marked deterioration in the quality of any article or class of articles relatable to that industry or manufactured or produced in the industrial undertaking or undertakings, as the case may be, which could have been or can be avoided; or (iii)there has been or is likely to be,, a rise in the price of an article or class of articles recitable to that industry or manufactured or produced 'in the industrial undertaking or undertakings.