the basic approach to science was established by:
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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
Explain the Aesthetic and Moral values of Science
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Which are the important pulsating nebulae?
Ozone attacks 1 Mercury and silver 2 Copper 3 Silver and iron 4 None of these
What are luminous irregular nebulae?
The ratio of pure gold in 18 carat gold is 1 60% 2 75% 3 80% 4 100%
3 Answers DSSSB-Delhi Subordinate Service Selection Board,
How can we calculate %difference in Weighing balance?
Emerald is ----in colour 1 Violet 2 Yellow 3 Deep green 4 Prussian blue
Name the indian states in which river ganga flows?
19 Answers College School Exams Tests, Intel, Yes Bank,
why our head's weight not feel our body?
The chemical used as a ‘fixer’ in photography is 1 Borax 2 Sodium thiosulphate 3 Sodium sulphate 4 Ammonium persulphate
Which of the following metals can displace zinc from a solution of zinc sulphate? 1 Lead 2 Magnesium 3 Iron 4 Mercury