571: Two important characteristics of a hypothesis are that it should be testable and that it should be stated in a manner that it can be refuted. Which one of the following hypotheses, fulfils these characteristics ?
(a) Intelligent persons have good memory
(b) Some birds are animals
(c) Some businessmen are dishonest
(d) All men are mortal
574: Find the correct order of the inception:
(1) IRDP
(2) Nationalisation of 14 banks
(3) Cooperative Banking
(4) Land reforms
(a) 3, 4, 2, 1
(b) 4, 3, 2, 1
(c) 3, 2, 4, 1
(d) 4, 2, 3, 1