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The dark lines in the solar spectrum are due to
1 Absorption of corresponding wavelengths by the prism used
in he spectrograph
2 Destructive interference between waves of certain definite
wavelengths
3 Absorption of corresponding wavelengths by the outer
layers of the sun
4 None of these
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(3) Absorption of corresponding wavelengths by the outer
layers of the sun
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Superphosphate fertilizer is prepared by the reaction between 1 Calcium phosphate and Sulphuric hydroxide 2 Sodium phosphate and Sodium nitrate 3 Magnesium phosphate and Sodium nitrate 4 Sodium sulphate and Phosphoric acid
2 Answers Central Police Forces, Odisha Police,
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What would happen had there been no chlorophyll in the green leaves?
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Biological Sciences 
