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General Science - Questions and Answers

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1486. Then term ""hydroponics"" is used to describe :
A. sound propagation under water
B. cultivation of plants in water
C. a disease in which patient develops fear of water
D. study of electronic devices which work under water
Explanation:
1487. The colour of the outer edge of the rainbow will be :
A. purple
B. red
C. violet
D. yellow
Explanation:
1488. One should not connect a number of electric appliance of the same power socket because :
A. the appliances will not get full voltage
B. the appliances will not get proper current
C. this can damage the appliances
D. this can damage the domestic wiring due to overheating
Explanation:
1489. When an earth satellite dissipates energy, it moves to a :
A. lower orbit and its kinetic energy increases
B. higher orbit and its kinetic energy decreases
C. lower orbit and its kinetic energy decreases
D. higher orbit and its kinetic energy increases
Explanation:
1490. Core of transformer is made up of :
A. soft iron
B. steel
C. copper
D. aluminium
Explanation:
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