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General Science

General Science
Nautical mile is a unit of distance used in:

Astronomy
Measuring the boundaries of a nation
Road mile
Navigation

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General Science
The isotope of uranium capable of sustaining chain reaction is

U-239
U-245
U-235
U-238

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General Science
What are metal bearing rocks called?

Bitumen
Ores
Bauxite
Metalloids

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General Science
Atoms of an element differ from those of all other elements in

Number of neutrons and electronic configuration.
Atomic number and number of valence electrons.
Number of neutrons and number of valence electrons.
Atomic number and electronic configuration.

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General Science
Actinides are the elements with atomic numbers from

101 to 115
97 to 104
36 from 43
89 to 103

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General Science
The two elements that are frequently used for making transistors are

Silicon and Germanium
Iridium and Tungsten
Boron and Aluminium
Niobium and Columbium

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