4596: What happens when the temperature of water falls from 30°C and 0°C?
(a) The volume of ice formed will be less than volume of water
(b) The volume of ice formed will be more than the volume of water
(c) Water will not freeze at 0°C
(d) None of the above
4597: The average annual temperature of a meteorological station is 26 degree Celcius, its average annual rainfall is 63 cm and the annual range of temperature is 9 degree Celcius. The station in question is
(a) Allahabad
(b) Chennai
(c) Cherrapunji
(d) Kolkata
4598: Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth?
(a) The Earth's magnetic field diverts them towards its poles
(b) Ozone layer around the Earth reflects them back to outer space
(c) Moisture in the upper layers of atmosphere prevents them from reaching the surface of the Earth
(d) None of the statements (a), (b) and (c) given above is correct
4599: The table given below depicts the composition of India's exports between 1992-93 and 1994-95
The changing composition of the export trade is indicative of structural transformation of Indian economy in favour of modernisation. The best indicator of the trend is the
(a) relative shape of petroleum products in exports
(b) decline in the share of agricultural products in exports
(c) constant share of ores and minerals in exports
(d) increase in the share of manufactured products in exports
4600: Which one of the following sets is correctly matched ?
(a) Diphtheria, Pneumonia and Leprosy : Hereditary
(b) AIDS, Syphilis and Gonorrhoea : Bacterial
(c) Colour blindness, Hemophilia and Sickle cell anaemia : Sex linked
(d) Polio, Japanese B encephalitis and plague : Viral