521: Which one of the following statements is not correct?
(a) Gulfs with narrow fronts and wider rears experience high tides.
(b) Tidal currents take place when a gulf is connected with the open sea by a narrow channel.
(c) Tidal bore occurs when a tide enters the narrow and shallow estuary of a river.
(d) The tidal nature of the mouth of the river Hooghly is of crucial importance to Kolkata as port.
522: Chips used in integrated circuits in computers are made of:
(a) Mica
(b) Manganese
(c) Silicon
(d) Zinc
523: Which one of the following is a modern tank?
(a) Bhim
(b) Akash
(c) Arjun
(d) Prithvi
524: During the year 2000-01, which one of the following industries recorded highest growth rate in India?
(a) Cement
(b) Coal
(c) Electricity
(d) Steel
525: The sufi saint who maintained that devotional music was one way of coming close to God was
(a) Muin-ud-din Chishti
(b) Baba Farid
(c) Saiyid Muhammad Gesudaraz
(d) Shah Alam Bukhari