A) The pores in the surahi help in evaporation of water |
B) The pores in the old surahi become clogged and thus, the total surface area for evaporation is reduced |
C) Old surahis become saturated with water and hence evaporation is not rapid |
D) Because of none of the above |
B) The pores in the old surahi become clogged and thus, the total surface area for evaporation is reduced |
1). The best conductor of electricity is :
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2). Which of the following is the correct sequence of the regions of the sun as one moves from its core to the surface? 1. Photosphere 2. Chromosphere 3. Convection zone 4. Corona
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3). You are standing in a lift. The force on the floor of the lift due to your weight will:
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4). If earth were 3 times as far from the sun as it is now, how would the gravitational attraction compare with its present value?
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5). Two cars, passing each other at high speed, are in danger of side swiping because :
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6). What is the correct ascending order for frequencies of the following radiations? 1. Visible 2. X-rays 3. Ultraviolet 4. Radio Waves
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7). Nuclear fission is caused by the impact of :
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8). Which of the following is used as a coolant in nuclear reactors?
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9). Which of the following is good nuclear fuel?
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10). What is the wavelength of visible spectrum?
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