71: The principal language of Nagaland is:
(a) English
(b) Naga
(c) Assamese
(d) Khasi
72: Which one of the following has a greater perimeter than the rest ?
(a) A square with an area of 36 sq cm
(b) An equilateral triangle with a side of 9 cm
(c) A rectangle with 10 cm as length and 40 sq cm as area
(d) A circle with a radius of 4 cm
73: Which one of the following defines extremist ideology during the early phase of Indian freedom movement ?
(a) Stimulating the production of indigenous articles by giving them preference over imported commodities
(b) Obtaining self-government by aggressive means in place of petitions and constitutional ways
(c) Providing national education according to the requirements of the country
(d) Organising coups against the British empire through military revolt
74: A "closed economy" is an economy in which
(a) Only exports take place
(b) Neither exports nor imports take place
(c) Deficit financing takes place
(d) The money supply is fully controlled
75: Trade winds are caused by the:
(a) Revolution of the earth
(b) Rotation of the earth
(c) In flowing movement of air along the earth's surface towards the equator
(d) None of the above