2961: The basic reason for the extraordinary sparkle of a suitably cut diamond is that
(a) it has a very high transparency
(b) it has a very high refractive index
(c) it is very hard
(d) it has well-defined cleavage planes
2962: The principal language of Nagaland is:
(a) English
(b) Naga
(c) Assamese
(d) Khasi
2963: Which country among the following has been involved in two in Test cricket?
(a) Australia
(b) India
(c) West Indies
(d) England
2964: Which of the following statements about 'Dinosaurs' is/are correct?
(a) The early man was a contemporary of Dinosaurs
(b) Man appeared first after the Dinosaurs became extinct
(c) The Dinosaurs became extinct about six million years before the appearance of the first man on the earth
(d) The Dinosaurs became extinct about 200 million years before the first man appeared on the earth
2965: Four wires of same material and of dimensions as under as stretched by a load of same magnitude separately. Which one of them will be elongated maximum ?
(a) Wire of 1 m length and 2 mm diameter
(b) Wire of 2 m length and 2 mm diameter
(c) Wire of 3 m length and 1.5 mm diameter
(d) Wire of 1 m length and 1 mm diameter