The first synthetic fiber made by man was
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Who discovered radio telescope?
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
Which of the following minerals has the lower numerical hardness value? 1 Talc 2 Gypsum 3 Apatite 4 Topaz
The disease that is caused by viral infection is
What is the Movement ?
Who is the oldest cosmonaut?
Which is/are the important raw material(s) required in cement industry? 1 Limestone 2 Gypsum & clay 3 Clay 4 Limestone & clay
why we can't make our living room as refrigerator?
Give two National aims of science education
Which was the international geo - physical year?
it is not advisable to sleep under a tree at night becouse trees release
Which one is having more weight when compare to diesel to petrole?