How can we calculate %difference in Weighing balance?
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Name the scientist who has been invited by the Srilankan Governement to have a Study on Employment development?
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Who is the first female cosmonaut?
The type of glass used in making lenses and prisms is 1 Soft glass 2 Pyrex glass 3 Jena glass 4 Flint glass
WHAT IS THE FUNCTION OF NIKEL IN CHEMICAL REACTION
Science as a social endeavor .Explain
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What is the significance of international geo - physical year?
Who suggested that most of the mass of the atom is located in the nucleus? 1 Thompson 2 Bohr 3 Rutherford 4 None of these
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The element required for solar energy conversion is 1 Beryllium 2 Silicon 3 Tantalum 4 Ultra pure carbon
Atoms of an element differ from those of all other elements in 1 Atomic number and electronic configuration 2 Atomic number and number of valence electrons 3 Number of neutrons and electronic configuration 4 None of these
Which are known as non - luminous irregular nebulae?