Lasers are widely used in various walks of life. These are
sources of
(1) Sound waves of very high frequency
(2) Sound waves of very high intensity
(3) Light waves which are coherent
(4) High speed electrons
Why are two blankets warmer than one? (A) Two blankets have more wool and so, they are warmer (B) Two blankets enclose air, which does not allow the cold to penetrate (C) Two blankets compress the air in between the body and the blankets and this compression produces heat
Which of the following States will soon acquire the status of 8th sister of north-east states as it is being included in the North-Eastern Council? 1 West Bengal 2 Sikkim 3 Assam 4 None of these
The Great barrier Reef off the coast of Australia provides for that country a/an: (a) abundant supply of minerals (b) semi-enclosed waterway for about 1200 miles (c) excellent fortification against attack on its major cities (d) connecting link between it and New Zealand
Who among the following has been honoured with the prestigious International Gandhi Peace Prize for 2003? (a) Nelson Mandela (b) Grameen Bank Bangaldesh (c) Vaclav Havel (d) None of the above
In a Greek city-state a citadel which was built for defence was known as a/an: (a) Sphinx (b) Acropolis (c) Ziggurat (d) Pantheon
Consider the following statements : 118 Marble is a constituent of tooth paste. 119 Gypsum is used for the manufacture of ammonium sulphate. Which of the statements given above is/are correct ? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2
. Which one of the following is caused by the expression of a recessive gene present on sex chromosome? (a) Rheumatism (b) Nervous shock (c) Muscular dystrophy (d) Cerebral hemorrhage
By which Amendment Act of the Constitution of India were the Directive Principles of the state policy given precedence over the Fundamental Rights wherever they come into conflict ? (a) 40th (b) 42nd (c) 44th (d) 46th
Gresham?s law in Economics relate to (1) Supply and demand (2) Circulation of currency (3) Consumption of goods (4) Consumption and distribution of goods and services
National sport of Australia is: (a) Football (b) Cricket (c) Hockey (d) Tennis
The first PM to have resigned without attending a Parliament session, was: (a) Charan Singh (b) Lal Bahadur Shastri (c) Morarji Desai (d) Indira Gandhi
The name of the Chinese President is (1) Jiang Zemin (2) Wang Bing (3) Chi Haotian (4) Lengwanbad