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Chemistry

Chemistry
Of the following compounds of calcium, the one having highest covalent character is

Cacl2
Cal2
CaBr2
CaF2

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Chemistry
Yellow Cake' an item of smuggling across border is

A crude from of cocaine
Unreformed gold
Uranium oxide
A crude from of heroin

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Chemistry
Which of the following caused radioactive pollution along the coast of Kerala ?

Zinc
Radium
Thorium
Plutonium

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Chemistry
The mass number of an atom is equal to

the number of protons and electrons
the number of protons
the number of neutrons
the number of nucleons

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Chemistry
White lung cancer' is caused by

Asbestos
Paper
Silica
Textiles

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Chemistry
A non-electronic conductor is

None of these
Gas Carbon
Iron
Copper Sulphate

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