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General Science

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

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

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General Science
Deep blue colour is imparted to glass by the presence of

Cupric oxide
Cobalt oxide
Nickel oxide
Iron oxide

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General Science
Actinides are the elements with atomic numbers from

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

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General Science
Chlorophyll is a naturally occurring chelate compound in which central metal is

Iron
Calcium
Magnesium
Copper

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General Science
Decibel is the unit for

Speed of light
Intensity of heat
Intensity of sound
Radio wave frequency

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General Science
The most important ore of aluminum is

Galena
Calamine
Bauxite
Calcite

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