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Civil Engineering Objective Questions { Elements Of Remote Sensing }



106. Pick up the correct statement from the following :
A. Phytoplankton contains photosynthetically active pigment.
B. An increase of phytoplankton increases the back scattering in the green region
C. An increase of phytoplankton absorbs the bule region rapidly
D. An increase of phytoplankon decreases the back scattering in the green region

107. In sun light, water rich in phytoplanktons appears :
A. red
B. green
C. brown
D. blue

108. In sun-light water poor in phy-to plank tons appears :
A. deep blue
B. red
C. green
D. yellow

109. With the increase of turbidity, the muddy water appears brown due to the shift of the upward radiance peak towards :
A. red
B. green
C. yellow
D. blue

110. The refractive index of the ocean water :
A. increases with salinity
B. increases with temperature
C. decreases with salinity
D. decreases with temperature

111. Pick up the correct statement from the following :
A. Water molecules and salt-ions in the ocean scatter the lower wave length more
B. An increase in the back scattering coefficient with shorter wave length gives a deep blue colour for clear oceanic water
C. The ratio of the upwelling irradiance just below the surface, and downwelling irradiance just above the surface is called reflectance ratio
D. All of these

112. The information system is the chain of the following operations,1. Collection of data 2. Planning the observations 3. Analysis of data 4. Decision making process Which one of the chains is correct ?
A. 4,1,2,3
B. 2,1,3,4
C. 3,2,1,4
D. 1,3,4,2

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